Vaporeon's best moveset in Pokémon GO is Water Gun and Hydro Pump, with 13.19 damage per second, and it can deal 470.3 damage before Vaporeon faints. This is true when battling in neutral weather.
All Vaporeon movesets ranked
Here is a complete list of Vaporeon movesets in Pokémon GO, ranked by their DPS and TDO. You can change the weather and the opposing Pokémon.
|1.||Water Gun||Hydro Pump||13.19||470.3||32.2|
|2.||Water Gun||Aqua Tail||12.51||446.2||30.6|
|4.||Water Gun||Last Resort *||12.25||436.9||29.9|
|5.||Water Gun||Scald *||11.41||406.8||27.9|
|6.||Water Gun||Water Pulse||11.26||401.6||27.5|