>>31617926Water is the type that benefits the most since it boosts its STAB and Water-type users tend to get Rain abilities like Swift Swim and Hydration.
Sun boosts Fire STAB, but very few Fire-types get buffs from their abilities in Weather. meanwhile, plenty of grass-types have weather related buff abilities but their strongest Fire-type attacks tend to be Weather Ball or Hidden Power, and they take more damage from a type they're already weak to in this weather.
Therefore, you need either:
>Fire-types with sun abilities>Grass-types with stronger Fire-type attacksSand is generally fine because there are 3 types that aren't hindered and those pokemon tend not to lose much when their weather goes down.
