The normal max base power of Water Spout is 150. In double battles, Water Spout hits multiple targets, so its base power for each Pokemon is decreased to 112, or 75% of its normal power. With STAB, Water Spout has 168 base power (150 x .75 x 1.5), and with rain, its total base power is 253 (150 x .75 x 1.5 x 1.5).
When two targets are available to hit, Leftovers increases the base power of Water Spout by 6.72 each turn. Life Orb decreases its base power by 11.2 with each attack.
Since Hydro Pump does not hit multiple targets, it is more powerful than Water Spout at 100%.
Blizzard has 90 base power when hitting multiple targets (120 x .75).
Surf and Muddy Water each have 71 base power when hitting multiple targets (95 x .75).
Wailord(VGC 2009)
Surf, Ice Beam, Blizzard, Hidden Power
63.333%
Water Spout has 71 base power, making it as powerful as Surf.
56.296%
Water Spout has 63 base power + STAB, making a neutral hit as powerful as a neutral Ice Beam.
53.333%
Water Spout has 60 base power + STAB, making a neutral hit as powerful as a neutral Blizzard.
41%
Water Spout has 46 base power, + STAB, making a neutral hit as powerful as a neutral base 70 Hidden Power.
Kyogre (VGC 2010)
Thunder, Surf/Muddy Water, Ice Beam, Blizzard, Hidden Power
100%
In the sun, Water Spout has 56 base power + STAB, making it weaker than a neutral Ice Beam or Blizzard.
With rain, neutral Water Spout is always stronger than 2x effective Ice Beam, Blizzard, and Thunder.
95%
Without rain, Water Spout has 106 base power + STAB, making a neutral hit as powerful as a 2x effective Blizzard.
With rain, Water Spout is as powerful as a 2x effective Thunder.
63.333%
Water Spout has 71 base power, making it as powerful as Surf and Muddy Water.
56.296%
Without rain, Water Spout has 63 base power + STAB, making a neutral hit as powerful as a neutral Ice Beam.
53.333%
With hail, Water Spout has 60 base power + STAB, making a neutral hit as powerful as a neutral Blizzard.
47%
With rain, Water Spout has 53 base power + STAB and rain boost, making a neutral hit as powerful as a neutral Thunder.
38%
With rain, Water Spout has 42 base power + STAB and rain boost, making a neutral hit as powerful as a neutral Ice Beam.
36%
With rain, Water Spout has 40 base power + STAB and rain boost, making a neutral hit as powerful as a neutral Blizzard.
Jellicent (VGC 2011)
Surf, Shadow Ball/Scald, Ice Beam, Blizzard, Energy Ball, Slime Wave, Sludge Bomb, Hidden Power
71%
Water Spout has 80 base power, making a neutral hit as powerful as a neutral STAB Shadow Ball or Scald.
63.333%
Water Spout has 71 base power, making it as powerful as Surf.
56.296%
Water Spout has 63 base power + STAB, making a neutral hit as powerful as a neutral Ice Beam.
53.333%
Water Spout has 60 base power + STAB, making a neutral hit as powerful as a neutral Blizzard or Sludge Bomb.
47%
Water Spout has 53 base power + STAB, making a neutral hit as powerful as a neutral Energy Ball.
Water Spout has 47.5 base power + STAB, making a neutral hit as powerful as a neutral Slime Wave.
41%
Water Spout has 46 base power, + STAB, making a neutral hit as powerful as a neutral base 70 Hidden Power.
When two targets are available to hit, Leftovers increases the base power of Water Spout by 6.72 each turn. Life Orb decreases its base power by 11.2 with each attack.
Since Hydro Pump does not hit multiple targets, it is more powerful than Water Spout at 100%.
Blizzard has 90 base power when hitting multiple targets (120 x .75).
Surf and Muddy Water each have 71 base power when hitting multiple targets (95 x .75).
Wailord(VGC 2009)
Surf, Ice Beam, Blizzard, Hidden Power
63.333%
Water Spout has 71 base power, making it as powerful as Surf.
56.296%
Water Spout has 63 base power + STAB, making a neutral hit as powerful as a neutral Ice Beam.
53.333%
Water Spout has 60 base power + STAB, making a neutral hit as powerful as a neutral Blizzard.
41%
Water Spout has 46 base power, + STAB, making a neutral hit as powerful as a neutral base 70 Hidden Power.
Kyogre (VGC 2010)
Thunder, Surf/Muddy Water, Ice Beam, Blizzard, Hidden Power
100%
In the sun, Water Spout has 56 base power + STAB, making it weaker than a neutral Ice Beam or Blizzard.
With rain, neutral Water Spout is always stronger than 2x effective Ice Beam, Blizzard, and Thunder.
95%
Without rain, Water Spout has 106 base power + STAB, making a neutral hit as powerful as a 2x effective Blizzard.
With rain, Water Spout is as powerful as a 2x effective Thunder.
63.333%
Water Spout has 71 base power, making it as powerful as Surf and Muddy Water.
56.296%
Without rain, Water Spout has 63 base power + STAB, making a neutral hit as powerful as a neutral Ice Beam.
53.333%
With hail, Water Spout has 60 base power + STAB, making a neutral hit as powerful as a neutral Blizzard.
47%
With rain, Water Spout has 53 base power + STAB and rain boost, making a neutral hit as powerful as a neutral Thunder.
38%
With rain, Water Spout has 42 base power + STAB and rain boost, making a neutral hit as powerful as a neutral Ice Beam.
36%
With rain, Water Spout has 40 base power + STAB and rain boost, making a neutral hit as powerful as a neutral Blizzard.
Jellicent (VGC 2011)
Surf, Shadow Ball/Scald, Ice Beam, Blizzard, Energy Ball, Slime Wave, Sludge Bomb, Hidden Power
71%
Water Spout has 80 base power, making a neutral hit as powerful as a neutral STAB Shadow Ball or Scald.
63.333%
Water Spout has 71 base power, making it as powerful as Surf.
56.296%
Water Spout has 63 base power + STAB, making a neutral hit as powerful as a neutral Ice Beam.
53.333%
Water Spout has 60 base power + STAB, making a neutral hit as powerful as a neutral Blizzard or Sludge Bomb.
47%
Water Spout has 53 base power + STAB, making a neutral hit as powerful as a neutral Energy Ball.
Water Spout has 47.5 base power + STAB, making a neutral hit as powerful as a neutral Slime Wave.
41%
Water Spout has 46 base power, + STAB, making a neutral hit as powerful as a neutral base 70 Hidden Power.
