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Mega Blastoise artwork

Mega Blastoise Raid Guide

Water

The best counters, weaknesses, and catch CP for beating Mega Blastoise in Pokémon GO raids — computed from every attacker's stats and movepool in our imported game-data snapshot (dated below the counter table).

Contents
Catch CP (L20)
21622252
Raid IV floor is 10 — 2252 means a 100% IV catch.
Weather-boosted (L25)
27032815
Boosted in Rainy weather.
Top weakness
GrassElectric
Grass hits ×1.60.

Best counters

DPS and estimated total damage output (TDO) are computed against Mega Blastoise's actual typing and Mega boss stats — each attacker's best fast + charged pairing, ranked by the combined DPS³ × TDO score. Only pairings whose charged move hits Mega Blastoise super-effectively are shown. Legacy marks movesets that need an Elite TM. This is per-boss matchup math, not the neutral-target tier list. Full formula on the methodology page.

Source: pogoapi.net · Data snapshot: Aug 24, 2026 · 10,016 rows · Methodology

Weaknesses

Grass×1.60
Electric×1.60

Mega Blastoise's moves

RockRollout
fast
DarkBite
fast
WaterWater Gun
fast
WaterHydro Pump
charged
NormalSkull Bash
charged
SteelFlash Cannon
charged
IceIce Beam
charged
WaterHydro Cannon
charged

Dodge when the screen flashes — the charged moves above are what hit hardest.