I had originally planned making a weather team building article, explaining how to build a team for every kind of weather, but with the new articles popping up, there is no point of it anymore, and I had something written down already, so not letting it go to waste. ----------------------- Introduction Sunny Day seems almost forgotten in DPP, mostly due to the major abundance of Hail, Rain, and Sandstorm teams in DPP. Just like Rain Dance, Sunny Day lacks a Pokemon that upon entering battle summons Sunny Day in OU and UU, just like Tyranitar and Abomasnow do for both Sandstorm and Hail, so you will find it difficult to set-up Sunny Day at some points. Sunny Day has potential in both in UU and OU, if used correctly of course. It is often said that Sunny Day is "not strong enough", or sometimes "not worth setting-up"; this isn't true. The simple fact that Sunny Day has the ability to boost certain Pokemon's Speed thanks to their ability makes this a strategic plan, which of course has potential. The major thing with Sun is that there are only a handful of Pokemon that can abuse it. But have no fear, this guide has been made with the best intentions of not letting go of your idea of making a successful Sunny Day team be destroyed. With all hope, after reading this guide you may be able to build a good Sunny Day team on your own. Getting to know Sunny Day Like it was mentioned previously, Sunny Day can only be summoned into the field by using the move "Sunny Day". Another way you can set-up Sunny Day is by using the ability "Drought", which sadly, is only seen in Ubers by the Pokemon Groudon, who most likely will stay in Ubers in DPP. Sunny Day raises Fire-type move's damage to increase by 50%, and Water moves to do 50% damage. Healing moves such as Moonlight and Morning Sun heal 2/3 of the user's maximum HP. It also decreases Thunder's accuracy from 70% to 50%, making Thunder a very poor option to utilize while Sunny Day is in play. Apart from only lasting 5 turns (though it lasts 8 with the use of a Heat Rock), no Pokemon can be frozen while Sunny Day is in effect, meaning Ice-type moves like Ice Beam cannot induce a freeze. The most important thing that Sunny Day causes is probably the aptitude to double the Speed of Pokémon with with the ability called "Chlorophyll", which can make them potential sweepers. Solar Power, another ability held by some Pokemon, can create much more potential and effective sweepers with this ability. Though the Pokemon lose 1/8 HP per turn, its Special Attack stat is increased by 50%. You will probably see more Sunny Day action in UU than you will in OU, as most Pokemon who benefit from Sunny Day are UU material due to the fact that they have certain abilities such as Chlorophyll. Sunny Day Speed There are only a couple of handful of Pokemon that can abuse Speed Sunny Day with Chlorophyll, which will be listed here: Bellossom - base 50 Exeggutor - base 55 Jumpluff - base 110 Shiftry - base 80 Sunflora - base 30 Tangrowth - base 50 Tropius - base 51 Victreebel - base 70 Vileplume - base 50 As you can see, their base Speed stat is rather low, but can manage to fix that with Sunny Day, which will outspeed more things in UU than it will in OU. Sunny Day Team Building This is the part where you will learn how to build your Sunny Day team. This part will go step-by-step telling you how to start shape up a good Sunny Day team. The Lead This is probably the one of the most important parts when building the Sunny Day team, because this is the Pokemon that will lead the team and attempt to set-up Sunny Day. In OU, you have the options using a lead that can use the famous "Stealth Rock" leads, which can possibly let you set-up Sunny Day as well. Most importantly, you want a Pokemon that can make use of the move U-turn if possible, so you still have a potential Pokemon that can set-up Sunny Day if needed. Whatever your lead is, it is strongly recommended that you use Heat Rock as an item on that certain Pokemon, to ensure 8 full turns of glorious Sunny Day for your team. Sunny Day Abusers These are the kind of Pokemon that abuse their ability, Chlorophyll, with the help of Sunny Day, making them potential sweepers. And also thanks to Sunny Day, Fire-type Pokemon's Fire-type moves are increased, which a STAB + 50% increase results into a real hurting. Sunny Day Back-up For this role, Pokemon that are dedicated to setting up Sunny Day go here: this includes Pokemon who have the ability Leaf Guard, which allows them invulnerability to status moves such as Thunder Wave and Will-O-Wisp. Support Supporting Pokemon are extremely useful when it comes to weather teams. No matter how effective your strategy is, there is always something that will bother the team. In short, this part of the team building should be used with a lot of consideration. Strategies Plans for Sunny Day are easy, there's nothing to them really. You will be abusing Fire-type and Grass-type Pokemon, like all Sunny Day teams should be doing, so some Leech Seed stalling isn't a bad idea. Leech Seed stall will require of Pokemon that have the ability to learn Leech Seed, which is almost all of the usable Grass-type Pokemon that have Sunny Day potential. This strategy can cause irritation to the opponent, even more with some Toxic support, you will be draining HP and apart from that the opponent will be losing HP to its status infliction caused by Toxic. You should feel safe running Toxic, as Sunny Day teams tend to have Fire-type Pokemon, which eliminate Steel-type Pokemon that thanks to that typing, are immune to Toxic, so this strategy is pretty nifty, especially if some of the things used above are used in tandem as stated previously. You can always go all out offensive Sunny Day, which is probably the best strategy there is. If you plan on doing such, just make sure you cover big weaknesses that Sunny Day teams encounter the most, such as some Dragon-type eliminator and such. There isn't many strategies for Sunny Day out there, but you can be assured the ones listed above have effectiveness. Sunny Day Team Checklist It does not matter if you're playing Sunny Day in OU or UU, make sure you have most of these covered, as it is one of the keys to making a successful Sunny Day Team. Have a resistance for Bulky Waters This is probably the most important thing to consider on the checklist: have something to handle Bulky Waters. Otherwise, they can be very problematic. You won't often have this problem though, as half the Pokemon that make use of Sunny Day are Grass-types, therefore giving you a check against most Water-types. It is NOT recommended to make a Sunny Day team without a Grass-type Pokemon for this reason. Have a something to handle Fire-type Pokemon and Flash Fire Fire-type Pokemon can be somewhat of a problem if you don't pack anything against them, and more problematic is Heatran; with the ability Flash Fire, it has the ability to absorb Fire-type attacks. Heatran not only boosts its Fire-type moves by 50% thanks to Flash Fire, but also makes Grass-types that lack a Ground-type move ineffective. Timid Tangrowth and Exeggutor can both outspeed Heatran in the Sunny Day, and both will outspeed and OHKO with a Life Orb Hidden Power Ground. Have enough Sunny Day What's a Sunny Day team without the move Sunny Day? The worst case scenario that can happen is the lack of Sunny Day, or not packing enough Pokemon that can set Sunny Day up. It is suggested that you have at least 3 Pokemon that can set up Sunny Day, as you don't need the whole team to have Sunny Day in their moveslot. Have a Rapid Spinner This isn't really necessary except in a few cases. Some Pokemon, like Moltres, take 50% damage from switching into Stealth Rock. Have a weather changer "counter" Don't let Tyranitar ruin your fun now! You're probably thinking this is insane, well not really. In OU, it is clear that you cannot have everything in a team, you are limited. If its possible, carry a Steel-type Pokemon. As redundant as it sounds, Pokemon such as Fortress can be a great check for both Tyranitar and Abomasnow, while being able to Rapid Spin as well, heck, it's even able to learn Sunny Day, making it a worthwhile consideration. There is a lot more that you can pack as well, but these are the most important when it comes down to Sunny Day team building. Ubers Sunny Day is an excellent concept in OU and UU. But what about Uber? With Groudon, the move is unnecessary thanks to Drought. Ubers is an interesting twist to a Sunny Day team because it requires different Pokemon to counter. Such an example is Kyogre: its monstrous Special Defense stat, Water-typing, and Drizzle ability make Sunny Day teams harder to use. Rayquaza is another threat to Sunny Day teams. Rayquaza's ability, Air Lock, nullifies all weather effects on the field. With the correct Pokemon and ample prediction, this can be handled. Keep in mind that Ubers is very unpredictable, but this shouldn't stop you at all. "Drought-abusing Teams", as we'll call it, requires the following: - A Pokemon that can prevent Stealth Rock from being layed down. - A Pokemon that can lay Stealth Rock for the team. - Groudon, obviously. - Moves that counter threats; Kyogre in particular. - Pokemon to abuse the weather. A good lead would be either Deoxys-S or Scarf Darkrai. The latter is the better decision, while Deoxys-S should be the next Pokemon released after Darkrai incapacitates a Pokemon with Dark Void. The combination of these two prevent Stealth Rock from being layed; whether the opponent depends on Stealth Rock being set up early or later in the match. Groudon should be considered next. The ParaDancer set is highly recommended to slow the opponent's switch ins, but other sets such as the pure Swords Dancer, Rock Polish, or Support sets work. Ho-oh becomes a very obvious Pokemon. STAB Sacred Fire is hard to shrug off, especially when its backed up with a 50% chance of inflicting a burn. A Life Orb set with a Lonely or Hasty nature is viable. Sacred Fire / Thunder / Earthquake / Roost allows Ho-oh to 2HKO 404 HP / 316 SpD Kyogre with Thunder. Roost helps Ho-oh recover from Life Orb recoil; however, Return and Punishment are options if Lati@s are of concern. Palkia is an excellent Pokemon that can work with the sun. Fire Blast and Spacial Rend offer excellent coverage backed up with Thunder to 2HKO Kyogre switch ins. Outrage should be the final attack to pummel Blissey. With a Life Orb, Palkia is doing massive damage as a mixed sweeper. The final Pokemon is hard to choose from. Chlorophyll Pokemon such as Exeggutor, Shiftry, and Tangrowth are good options to choose from. Exeggutor has a 125 Special Attack stat, can outpace Deoxys-A with a positive Speed nature and 204 EVs placed into Speed, and explode when necessary. Shiftry is able to explode as well; however, Shiftry's second STAB is useful for damaging the influencial Psychic-types in Ubers. It's lower Special Attack stat is noticable, so using Nasty Plot to boost your Special Attack isn't a bad option. Tangrowth has the biggest movepool of the three. With access to Earthquake, Power Whip, Grass Knot, and Focus Blast, Tangrowth is a little more difficult to handle. Be aware that these Pokemon are troubled against Lati@s, Scizor, and Rayquaza. The Pokemon you should be aware of most have been listed: Kyogre and Rayquaza. However, previously mentioned Pokemon such as Lati@s, Scizor, and Giratina cause Sunny Day teams grief without proper Pokemon. Remember when building a Sunny Day team that these Pokemon should be taken care of one way or another. Sunny Day Pokemon This guide will be listing Pokemon that are very helpful Pokemon in Sunny Day conditions. Sunny Day Leads OU: Azelf - Just like the Rain Dance lead, Azelf makes a great Sunny Day lead. Thanks to its great Speed, it's able to set up Sunny Day very quickly, which will prevent taunt-users from taunting Azelf. Azelf has the ability to do one of the following: either U-turn and save Azelf for when you need Sunny Day, support the team by setting up both Reflect and Light Screen, or Exploding in the opponent's face, thus having having the possibility of taking down one of the opponent's Pokemon. Uxie - The most bulky of the legendary trio, therefore being able to guarantee a Sunny Day if possible thanks to its phenomenal defenses. A lot of bulk means you have the capability of setting up Stealth Rock and Light Screen or Reflect without worrying about taking a hit. Unlike Azelf, Uxie has Yawn. Yawn is a great scouting move that forces switches, thus coming in handy as it can put a Pokemon to sleep if it decides to stay in. Trick is something Uxie can pull off as well, which possibly Trick a move such as Choice Scarf and set-up Sunny Day and possibly Stealth Rock as well. Bronzong - Possibly a redundant Pokemon, but c'mon, seriously, when is Bronzong not a good lead for any team? Bronzong also posseses the ability to learn Sunny Day, making it an awesome lead in OU Sunny Day teams. Bronzong is one of those Pokemon that can either ensure Sunny Day to be set up, possibly for 8 turns if it has Heat Rock equipped, or faces a fast Taunt-user such as Azelf or Aerodactyl. Bronzong is a lead and support Pokemon all in one. Thanks to its amazing resistances, it's one hell of a Pokemon to take down. Jirachi - Jirachi makes a good Sunny Day user.Like Bronzong, Jirachi is able to set up Sunny Day and has access to Stealth Rock as well, making it something to take in mind when choosing a lead. The most unique thing that Jirachi has is probably Wish, which will be able to provide healing as team support, something that is extremely helpful in every team. Jirachi makes a solid choice all around. Moltres - This also makes a great lead as Moltres is a Fire-type while being able to set up Sunny Day. Moltres is probably the Pokemon that will be scaring off Steel-type leads who want to ruin the fun, while it's able to potentially sweep as well. You might want to have a Rapid Spin support in the team if you're thinking about using Sunny Day and U-turn in tandem, as Moltres's switch-ins are drastically limited without a Rapid Spinner, which without one Moltres will be taking 50% on the switch-in, not the best thing you want to happen. Roserade - Roserade is a fantastic lead in OU, and its no different in Sunny Day! Being able to learn Toxic Spikes makes this Pokemon a good lead, as setting up some Toxic Spikes, or regular Spikes, is always helpful for a team to sweep. Unfortunately, it's not able to learn Stealth Rock like other leads, but it's able to learn both Weather Ball and SolarBeam. The former becomes a 100 base power Fire-type attack, the latter is a deadly attack once you consider it with STAB. Infernape - Infernape work well as a lead, as its capable of learning both Fake Out and Stealth Rock, there is nothing stopping it from setting up Sunny Day too. Infernape has an advantage when being a lead thanks to Infernape being able to learn Close Combat, which will tear apart Tyranitar, or atleast scare it off. UU: Jumpluff - One of the fastest Pokemon of the UU, which it's able to learn Sunny Day as well. Jumpluff makes a great option as a lead; not only because of its stellar Speed, but its other moves, such as Sleep Powder and Stun Spore make it a great option. It has access to U-turn, which allows Jumpluff to switch safely from harm right after setting up the sun. In short, this gives Jumpluff the ability to set-up Sunny Day again if needed. Encore is another surprise move on Jumpluff, being able to get the opponent stuck in one move can allow Jumpluff to proceed and set-up Sunny Day. Victreebel - Victreebel might not have the best Speed, but its base 70 Speed is definitely something to look out for, especially when you realize there isn't many UU Pokemon that are faster. Victreebel is the one of the best Sunny Day sweepers due to the fact that it can learn both Sword Dance and Synthesis, making it a Pokemon that can recover effectively while it sweeps. Persian - Similair to the Rain Dance set for Persian in the analysis, it can utilize Sunny Day while supporting the team with Taunt, Hypnosis, Fake Out, and U-Turn. Sunny Day Sweepers OU: Tangrowth - Tangrowth is a sturdy Pokemon; pretty much the best Grass-type when it comes to defensive capabilities. Unlike Celebi, Tangrowth does not learn Recover, but it's able to learn Synthesis and Morning Sun. Tangrowth's mixed set in the analysis is something that is hard to handle under Sunny Day conditions, so it is something to consider when using it. Exeggutor - Of all the Chlorophyll Pokémon, Exeggutor has the highest Special Attack, making it a pretty effective sweeper under Sunny Day. With the use of Chlorophyll, Exeggutor has the capability to reach a monster 418 Speed stat with max Speed and a neutral nature, which outspeeds Choice Scarf Heatran and others. Furthermore, Exeggutor has access to moves like SolarBeam and Stun Spore and Sleep Powder, making it a pretty effective Pokemon. It also has access to Explosion, so once Exeggutor can't go at it anymore, it can explode and possibly take down another Pokemon. Infernape - Infernape makes a powerful sweeper all around. Being able to hit hard from both sides of the spectrum makes this Pokemon a great option, even for a Sunny Day team.Infernape's STAB Fire Blast can become more deadly under Sunny Day, as it gets a 50% boost from Sunny Day, making it Infernape's secret weapon. Infernape has the option of running Choice Band, Choice Specs, or Mixed. Mixed would be the most recommended as it has access to Grass Knot (Infernape also learns SolarBeam, which will hit heavier opponents harder than Grass Knot). Hidden Power Ice hits Dragon-types while Grass Knot prevents it from being walled by bulky waters. As for Blissey, Close Combat will eliminate her as a threat. Entei - Entei is one of the few Fire-type Pokemon that has access to SolarBeam and Calm Mind, which makes Entei one of those Pokemon that you really want on a Sunny Day team. Entei can also hit from both sides of the spectrum, but not as hard as Infernape due to its limited physical movepool, so Entei is better off being a Choice Specs or Calm Mind-user. Heatran - Heatran is a Pokemon with the awesome Steel and Fire-typing, making it able to handle Dragon-types to some extent and many Special Attacks that are thrown at it. Heatran makes a good use of both Choice Specs and Choice Scarf, and also has access to SolarBeam like all other Fire-type Pokemon (except for Pokemon like Flareon), making Heatran another Pokemon that will enjoy Sunny Day for the 50% boost of its Fire-type attacks. Houndoom - Base 110 Special Attack is not bad at all. Houndoom becomes a beast when given Choice Specs, with access to SolarBeam, and the boost of its Fire Blast and thanks to Sunny Day, it can be pretty dangreous. Though its Speed can be a let down for some, its ability to counter Psychic-types such as Azelf, thanks to its part Dark-type that shouldn't be overlooked! Magmortar - Magmortar is another great Fire-type Pokemon that should be an option for a Sunny Day, mostly because of its possible sweep with a Mixed Attacker set, something that is often overlooked. Magmortar, like Infernape, can hit hard from both sides of the spectrum, so it's capable of running both a Choice Band and a Choice Specs set, but with its access to SolarBeam, a 125 Special Attack stat, and the boost from Sunny Day, Fire Blast means danger. Magmortar does not really care about Flash Fire like other Fire-types though due to its access to Focus Blast and Cross Chop, though both of the attack's accuracy is shaky. Typhlosion - Typhlosion is great in Sunny Day with Choice Scarf or Specs. In fact, Modest Typhlosion manages a to 2HKO (50.23% - 59.14%) with a Choice Specs Eruption under the sun, to a 651 HP / 385 SpD Blissey. Unfortunately, Stealth Rock somewhat ruins this, but still, it is great option to consider. UU: *Note: Although most of the useful Sunny Day sweepers are listen for UU, the following Pokemon are fully capable of performing with excellence in OU as well, with the support of Sunny Day of course. Bellossom - Not the best sweeper under Sunny Day, but still have some effectiveness. Shiftry - Shiftry is one of those Pokemon that can play both the role of a physical or special sweeper, though it really wants more Special Attack and Speed. Shiftry's part Dark-type means it has the ability to learn Dark Pulse, giving you a chance to eliminate things like Grumpig and Hypno without having to pack something specifically for both these Pokemon. Tropius - Pretty much on the same page as Bellosom, not really the best sweeper under Sunny Day, but things like Sword Dance make it differ from the others, as Tropius is really one of the Pokemon that can actually work with a physical set under Sunny Day. Tropius holds the ability Solar Power, which makes its Special Attack increase incredibely. Packed with a Choice Specs, very little will be resisting this powerhouse. Victreebel - Victreebel is one of the Pokemon that shines the most in a Sunny Day team. Victreebel is much better than Shiftry in terms of being able to attack from both sides of the spectrum, thanks to base 105 Attack and base 100 Special Attack is something that shouldn't be overlooked. It has access to Swords Dance, which makes it a pretty effective physical sweeper considering it has the ability Chlorophyll. Packed with Swords Dance, it can destroy a lot if used correctly. Vileplume - Vileplume can be pretty annoying Pokemon under a Substitute, thanks to its part Poison-type, it handles Fighting-type Pokemon much better than the others. In offensive terms, this Pokemon does the same thing as the other Sunny Day Sweepers do, though it won't make much use of Chlorophyll thanks to its slow base Speed. Sunflora - Its probably one of the Sunny Day sweepers with a high base Special Attack. It might not look like much, but Sunflora has access to Solar Power, which packed with a Choice Specs reaches an insane Special Attack stat. With SolarBeam and Sunny Day at hand, not much will be stopping the massive destruction this can cause. Rapidash - Rapidash is a great Sunny Day sweeper in UU, regardless about what others say. Rapidash is the only Fire-type Pokemon that gets access to Megahorn (though its accuracy isn't the best), making it the only Fire-type Pokemon in UU who isn't walled by Hypno, Grumpig, and Claydol. Rapidash also has Hypnosis in its support movepool, It may not have the best accuracy, but its still something to look in Rapidash. Ninetales - Ninetales absolutely loves Sunny Day. With it knowing Nasty Plot as well as access to SolarBeam, it can leave opposing teams in fear. Ninetales also gets Hypnosis, again not the best acuracy, but should be considered. Flareon - DPP blessed Flareon with SuperPower, giving it an edge against Clefable now. Flareon is able to cause a lot of havoc with its Mixed Sweeper set, and is even more deadly in Sunny Day. Flareon might not have access to SolarBeam like the other Fire-types, but can still make use of Hidden Power Grass, so Flareon won't be fearing Water-types either. Castform - This is probably the weakest option if you consider judging Pokemon by their stats, but under Sunny Day its attack "Weather Ball" can become somewhat lethal. Otherwise, this little guy can be used for setting up Sunny Day as well. Wormadam - Wormadam does not have the best movepool, but its able to cause damage in UU with the use of Sunny Day, due to it being able to use SolarBeam, packed with a Choice Specs can cause quite some damage. Support OU: Celebi - An extremely useful Pokemon for a Sunny Day team in the OU enviorment. Celebi will be the main Pokemon to stop things such as Swampert, Vaporeon, and Suicune from ruining your team's sweep. Celebi has access to Thunder Wave and Recover; Thunder Wave will provide some paralysis support, mostly used so you feel safer using your set-up Pokemon, such as Victreebel. Dugtrio - One of the best revenge killers out there, and it has a reason for that. You will sometimes find Pokemon like Tyranitar ruining Sunny Day teams, but Dugtrio is here for that. Dugtrio has STAB Earthquake, which will ensure an OHKO on Tyranitar, eliminating one less thing to worry about. Cresselia - Sunny Day teams tend to have problems with Dragon-type Pokemon in OU, mostly Salamence. Cresselia can be called the "#1 counter" to Dragon-types. With access to Reflect, Light Screen, Thunder Wave, and Ice Beam, there is little to worry about when Dragonite and Salamence are of concern. Moonlight benefits from Sunny Day, which will heal 2/3 of Cresselia's HP. Moltres - Moltres is once again mentioned here, as it's a support Pokemon as well. Despite its horrific weakeness to Stealth Rock, Moltres makes a great counter to Fighting-types and others, and is able to set up Sunny Day as well. Rhyperior - Rhyperior is the OU version of Camerupt, which is a pretty good option as well. Thanks to Rhyperior's awesome ability, Solid Rock, Rhyperior takes much less from Water-type moves, thus giving some more bulk to this Pokemon. Rhyperior is also able to learn Sunny Day and Stealth Rock, which also makes it a good support Pokemon. UU: *Note: Although most of the useful Sunny Day sweepers are listen for UU, the following Pokemon are fully capable of performing with excellence in OU as well. Leafeon - Possibly the best bulky water eliminator for a Sunny Day team. Having the ability "Leaf Guard", it makes Leafeon heal much faster from status moves such as paralysis, making a pretty effective bulky Grass-type Pokemon. Leafeon also has access to Swords Dance, and with its amazing bulk, it's capable of causing havoc after a few Sword Dances. Altaria - Altaria is here for opposing Fire-types that trouble Sunny Day teams; not just any regular Fire-type, but Flareon. Flareon has Flash Fire which gives Flareon a boost if it switches into a Fire-type attack. Grass moves are not very effective on it either, so it causes trouble for Sunny Day teams to bypass. Camerupt - Having such a great typing, decent stats, and a good support movepool make this Pokemon what it is in a Sunny Day team: fantastic. Camerupt's typing allows it to have an immunity to both Thunder Wave and Will-O-Wisp, which otherwise cripples your team's sweepers. Furthermore, its immunity to Electric-type attacks as well as its abundant resistances make Camerupt a Pokemon that not only can be utilitzed in UU, but also in OU to keep threats such as Heatran and Zapdos in check. Camerupt also has access to moves to Stealth Rocks and Yawn. Stealth Rock for team support and Yawn is for some possible scouting. Roar is also useful for scouting since it works outside of Sleep Clause. Yawn, on the other hand, becomes ineffective after the Pokemon falls asleep, so its something to consider when picking between the two. Magcargo - Though its typing isn't the best, it has a good handful of support moves Sunny Day teams can use. Magcargo has access to Stealth Rocks and Yawn, and it also have access to Reciver and both Light Screen and Reflect, making it something to consider. Shuckle - Shuckle is one almighty bulky Pokemon. Shuckle is a support Pokemon mostly because of its ability to learn Sunny Day (like every other Pokemon lol) and having access to Stealth Rock, but being able to bring down things with Toxic. Shuckle also has Encore, which can be extremely annoying for the opponent. Venusaur - Venusaur is a Pokemon that can utilize both sides of the offensive spectrum effectively. Physically, it is able to learn Swords Dance with moves such as Seed Bomb, Return, and Earthquake to back it up. Specially, Venusaur has an excellenet Special Attack stat as well as attacks such as SolarBeam, Hidden Power, and Sludge Bomb to utilize. Hitmontop - "What the hell is it doing here?" Hitmontop will be helping out with Pokemon such as Lapras with Close Combat. As for Mantine, Stone Edge will shut it down. Hitmontop is also a nifty Rapid Spin user as well. Hitmontop also makes a check for Clefable, who can pretty much dominate a Sunny Day team if not prepared for. Threats Tyranitar - Weather teams' biggest enemy: Tyranitar. It's not much the Pokemon itself, it is Tyranitar's ability. which automatically brings Sandstorm into play when this Pokemon is summoned. With it's high Special Defense thanks to sandstorm giving it a boost, Fire-types won't be doing much to its mostly because of its part Rock-type. Sandstorm also makes SolarBeam have a 1 turn charge. Tyranitar can be brought down by Dugtrio though, and with much ease, so it's not really something you should worry about if you have a Dugtrio in your team. Hippowdon - This too a threat, thanks to Sandstream again, but to a lesser extent. Its a Ground-type, meaning it won't be able to handle Grass-type Pokemon at all, so something like Vileplume or Celebi should be able to handle it too much affluence. Abomasnow - Abomasnow is a threat as well due to its ability changing the weather. Most Sunny Day teams pack a Fire-type; however, Grass-types should be aware of the 100% accurate Blizzards when facing Abomasnow. Vaporeon - Bulky Waters like Vaporeon will always be a threat to Sunny Day teams that don't carry a Grass-type Pokemon, but not many teams are seen without a Grass-type, so its probably not something to worry about much. Suicune - Suicune follows the same page as Vaporeon. Calm Mind, on the other hand, makes Suicune very different from Vaporeon. After a few Calm Minds, it can cause havoc with Ice Beam and Surf. Yawn can handle most Suicune as well as Roar. Swampert - Swampert is a real pain in the ass but Celebi handles Swampert like there is no tomorrow, and so does any other Grass-type, and again, Sunny Day teams rarely go without a Grass-type Pokemon. Heatran - Heatran's Flash Fire is something that can that can be troublesome. Heatran makes Fire-type moves useless thanks to Flash Fire. Camerupt can switch into Heatran that aren't locked into Earth Power. It isn't the best answer to Heatran, but is reliable in doing so thanks to STAB Earthquake. Cresselia can also get some action going on, but might require to pack Calm Mind and Hidden Power Ground, which isn't really recommend to do. Salamence - Dragon-types are also problems, as Salamence resists both Fire-moves and Grass-type moves. Dragon-type Pokemon problems can easily be eliminated by Cresselia though. Blissey - With a monster base 255 HP and base 135 Special Defense, it can be an unpleasant Pokemon to fight with a Sunny Day team due to the fact that most of Sunny Day teams are composed of the special side of the spectrum. Dugtrio can possibly 2HKO Blissey while Infernape can handle Blissey with Close Combat. With the proper Pokemon, this shouldn't be an issue. UU: Quagsire - This also goes under the bulky water type category. Grass-type Sunny Day Pokemon will handle it. Gatrodon - See above. Lanturn - Lanturn resists Fire-type moves, and Grass-type moves to some extent, though Lanturn won't be taking Choice Specs SolarBeams well. Lapras - Lapras isn't much of a threat, mostly because of its weakness to Stealth Rock, but still something to look out for. Golduck - Golduck is probably the Water-type you should look out for the most, as its Cloud Nine ability nullifies Sunny Day, but Golduck is be dominated by Grass-types. Golduck can see some action in OU as well, as its ability allows for Sunny Day to have no effect as long as Golduck is in play, making Fire Blast from Pokemon like Heatran somewhat weaker. Mantine - Mantine is probably a problem that's hard to counter. Mantine also has a horrible weakness to Stealth Rock, so your best bet is to have Stealth Rock in play and either Yawn or Roar. Clefable - With its base 90 Special Defense and base 95 HP, it can be a potent thread that can shrug off Special Attacks with ease, but can be defeated by Sunny Day Swords Dance sweepers such as Leafeon and Tropius. The easy way out would be using Hitmontop. Conclusion Hopefully, you at least got an understanding about how Sunny Day teams work. Since you know what it's supposed to be composed of, now it's time for you to put yourself to the test and make your own Sunny Day team. Whether it is OU or UU, you can hopefully make a good Sunny Day team: just don't forget there is no such thing as "too much Sunny Day"!"