Mega Blastoise is a Water-type Mega Pokémon in Pokémon GO. It is a very bulky Mega Raid boss with strong Water-type attacks, making it a tougher fight than many other Mega Pokémon.
In this guide, you will learn everything about Mega Blastoise raids including its weaknesses, best counters, moveset, weather boost, how many trainers are needed, catch CP values, and whether it is worth raiding.
Stats & Basic Info
| Type | Water |
| Max CP | 4455 |
| Weather Boost | Rainy |
| Shiny | Yes |
🧬 About Mega Blastoise in Pokémon GO
Mega Blastoise is a Water-type Pokémon. When Mega Evolved, it becomes one of the strongest Water-type attackers in the game and provides damage bonuses to Water-type Pokémon in raids.
Mega Blastoise is useful because:
- It boosts Water-type attackers
- It is one of the best Water-type Mega Pokémon
- It is excellent against Fire, Rock, and Ground-type raid bosses
Weaknesses & resistances
| Category | Details |
|---|---|
| ❌ Weak To: |
 Electric •
 Grass
|
| ✅ Resistant To: |
 Water •
 Ice •
 Steel •
 Fire
|
Notes: Electric-types are usually the safest and most consistent choice, while Grass-types can deal huge damage but may be riskier depending on Blastoise’s moveset. It resists Fire, Water, Ice, and Steel, so those types are very inefficient here.
🗡️ Best Counters for Mega Blastoise
The best way to defeat Mega Blastoise is to use strong Electric or Grass-type Pokémon.
🌿 Grass-type Counters
- Rillaboom: (Razor Leaf / Frenzy Plant)
- Sceptile: (Frenzy Plant)
- Gallade: (Leaf Blade)
⚡ Electric-type Counters
- Electivire: (Thunder Shock / Wild Charge)
- Black Kyurem: (Fusion Bolt)
- Mewtwo: (Thunderbolt)
Best Mega Evolutions
Recommended Megas to use against Mega Blastoise:
- Venusaur, Sceptile – Grass boost
- Rayquaza, Sceptile - Dragon boost
- Rayquaza - Flying boost
- Manectric, Ampharos - Electric boost
- Lucario - Fighting boost
Best Moveset
- Fast: Water Gun, Rollout, Bite
- Charged: Ice Beam, Hydro Pump, Flash Cannon, Skull Bash
- Elite: Hydro Cannon
Pro tip: Its Hydro Cannon hits extremely hard even through resistance, and Ice Beam can punish careless Grass-type teams.This is not a one-shot boss — it is a slow grinder that drains potions and revives.
Best Regular Counters
Regular pokemon that amplify the right types give you a powerful edge. Below are top Regular counters with short notes on why they excel.
| Pokémon | Fast Moves | Charged Moves | Elite Moves | Best Moves |
|---|---|---|---|---|
| Kartana | Air Slash / Fury Cutter / Razor Leaf | Sacred Sword / Aerial Ace / X-Scissor / Leaf Blade / Night Slash | - | Razor Leaf and Leaf Blade |
| Zekrom | Charge Beam / Dragon Breath | Flash Cannon / Wild Charge / Outrage / Crunch | Fusion Bolt | Charge Beam and Fusion Bolt |
| Xurkitree | Thunder Shock / Spark | Power Whip / Discharge / Thunder / Dazzling Gleam | - | Thunder Shock / Spark and Thunder / Dazzling Gleam |
| Zarude | Vine Whip / Bite | Power Whip / Energy Ball / Dark Pulse | - | Vine Whip / Bite and Power Whip / Energy Ball |
| Regieleki | Lock-On / Thunder Shock / Volt Switch | Hyper Beam / Thunder / Zap Cannon | Thunder Cage | Volt Switch and Thunder Cage |
| Sky Shaymin | Hidden Power / Magical Leaf / Zen Headbutt | Energy Ball / Grass Knot / Solar Beam / Seed Flare | - | Magical Leaf and Solar Beam |
| Eternatus | Poison Jab / Dragon Tail | Flamethrower / Dragon Pulse / Sludge Bomb | Dynamax Cannon | Dragon Tail and Dynamax Cannon |
| Thundurus | Bite / Volt Switch | Focus Blast / Sludge Wave / Thunder / Thunderbolt | Wildbolt Storm | Volt Switch and Wildbolt Storm |
| Raikou | Thunder Shock / Volt Switch | Aura Sphere / Shadow Ball / Thunder / Thunderbolt / Wild Charge | - | Volt Switch and Aura Sphere / Shadow Ball / Thunder |
| Black Kyurem | Shadow Claw / Dragon Tail | Stone Edge / Blizzard / Iron Head / Outrage / Fusion Bolt / Freeze Shock | - | Dragon Tail and Freeze Shock |
| Dawn Wings Necrozma | Shadow Claw / Metal Claw / Psycho Cut | Dark Pulse / Iron Head / Future Sight / Outrage / Moongeist Beam | - | Shadow Claw / Metal Claw and Moongeist Beam |
| Electivire | Low Kick / Thunder Shock | Thunder Punch / Thunder / Ice Punch / Wild Charge | Flamethrower | Low Kick and Thunder |
| Rillaboom | Scratch / Razor Leaf | Earth Power / Grass Knot / Energy Ball | - | Razor Leaf and Earth Power |
Best Shadow Counters
Shadow pokemon that amplify the right types give you a powerful edge. Below are top Shadow counters with short notes on why they excel.
| Pokémon | Fast Moves | Charged Moves | Elite Moves | Best Moves |
|---|---|---|---|---|
| Shadow Chesnaught | Low Kick / Smack Down / Vine Whip | Superpower / Gyro Ball / Energy Ball / Solar Beam / Thunder Punch | Frenzy Plant | Smack Down and Solar Beam |
| Shadow Thundurus | Volt Switch / Bite | Sludge Wave / Focus Blast / Thunder / Thunderbolt | Wildbolt Storm | Volt Switch and Wildbolt Storm |
| Shadow Mewtwo | Psycho Cut / Confusion | Focus Blast / Flamethrower / Thunderbolt / Psychic / Ice Beam | Hyper Beam / Shadow Ball / Psystrike | Confusion and Hyper Beam |
| Shadow Raikou | Thunder Shock / Volt Switch | Aura Sphere / Shadow Ball / Thunder / Thunderbolt / Wild Charge | - | Volt Switch and Aura Sphere / Shadow Ball / Thunder |
| Shadow Magnezone | Metal Sound / Spark / Charge Beam / Volt Switch | Flash Cannon / Mirror Shot / Zap Cannon / Wild Charge | - | Volt Switch and Zap Cannon |
| Shadow Electivire | Low Kick / Thunder Shock | Thunder Punch / Thunder / Ice Punch / Wild Charge | Flamethrower | Low Kick and Thunder |
| Shadow Zapdos | Charge Beam | Drill Peck / Ancient Power / Zap Cannon / Thunderbolt / Thunder | Thunder Shock | Charge Beam and Zap Cannon |
| Shadow Tangrowth | Infestation / Vine Whip | Sludge Bomb / Ancient Power / Rock Slide / Solar Beam / Power Whip | - | Infestation and Solar Beam |
| Shadow Venusaur | Razor Leaf / Vine Whip | Sludge / Sludge Bomb / Petal Blizzard / Solar Beam | Frenzy Plant | Razor Leaf and Solar Beam |
| Shadow Sceptile | Fury Cutter / Bullet Seed | Aerial Ace / Earthquake / Leaf Blade / Dragon Claw / Breaking Swipe | Frenzy Plant | Bullet Seed and Earthquake |
Best Mega Counters
Mega pokemon that amplify the right types give you a powerful edge. Below are top Mega counters with short notes on why they excel.
| Pokémon | Fast Moves | Charged Moves | Elite Moves | Best Moves |
|---|---|---|---|---|
| Mega Gallade | Low Kick / Confusion / Psycho Cut / Charm | Close Combat / Leaf Blade / Psychic | Synchronoise | Charm and Close Combat |
| Mega Lucario | Counter / Bullet Punch | Close Combat / Power-Up Punch / Aura Sphere / Shadow Ball / Flash Cannon / Meteor Mash / Blaze Kick / Thunder Punch | Force Palm | Counter and Close Combat |
| Mega Manectric | Charge Beam / Thunder Fang / Snarl | Flame Burst / Overheat / Thunder / Wild Charge / Psychic Fangs | - | Snarl and Overheat |
| Mega Ampharos | Charge Beam / Volt Switch | Focus Blast / Power Gem / Trailblaze / Zap Cannon / Thunder / Thunder Punch / Brutal Swing | Dragon Pulse | Volt Switch and Focus Blast / Zap Cannon |
| Mega Rayquaza | Air Slash / Dragon Tail | Aerial Ace / Dragon Ascent / Ancient Power / Outrage | Hurricane / Breaking Swipe | Dragon Tail and Dragon Ascent |
| Mega Venusaur | Razor Leaf / Vine Whip | Sludge / Sludge Bomb / Petal Blizzard / Solar Beam | Frenzy Plant | Razor Leaf and Solar Beam |
| Mega Sceptile | Fury Cutter / Bullet Seed | Aerial Ace / Earthquake / Leaf Blade / Dragon Claw / Breaking Swipe | Frenzy Plant | Bullet Seed and Earthquake |
CP Ranges
After defeating Mega Blastoise, you will catch a normal Blastoise.
- Perfect (L20): 2,162-2,252 CP
- Weather Boost (L25): 2,703-2,815 CP
- Boosted by: Rainy
🌦️ Weather Boost
Mega Blastoise gets a weather boost in:
- Rainy → boosts Water
Your counters get boosted in:
- Rainy → boosts Electric
- Sunny → boosts Grass
Revive & Potion Cost
- Average revives used: 8–14
- Average potions used: 10–18
- Dodging significantly reduces resource usage
- Using Mega Pokémon reduces total relobbies
Common Raid Mistakes
Avoid using fragile Water or Ice attackers—they'll often be outpaced by Blastoise's high damage. Also be cautious with Ghost types if Blastoise runs Crunch.
Best Team Compositions
Small Group (2-3 Trainers)
With strong Electric or Grass-type counters and at least one Mega Pokémon, Mega Blastoise can be defeated by 2 to 3 high-level trainers.
Medium Group (4-5 Trainers)
A group of 4 to 5 trainers with decent counters should have no trouble defeating Mega Blastoise.
Large Group (6+ Trainers)
Mega Blastoise becomes very easy with a large group, but avoid overfilling the lobby to save raid passes.
Recommended Teams
Optimized Team
- Mega Sceptile
- Zekrom
- Shadow Raikou
- Xurkitree
- Shadow Electivire
- Roserade
Budget Team
- Venusaur
- Roserade
- Electivire
- Raikou
- Leafeon
- Magnezone
Raid Strategy
- Use Electric or Grass-type attackers only.
- Avoid Fire, Ground, or Rock-type Pokémon.
- Dodging Hydro Cannon helps fragile attackers survive longer.
- Mega Blastoise can be comfortably defeated by 2–3 strong trainers.
Evolution, Mega Details & Buddy Distance
| Evolution Line | Base(Squirtle) → Stage(Wartotle) → Final(Blastoise) → Mega(Blastoise) |
| Mega Energy (First) | 200 |
| Subsequent Cost | 40 |
| Mega Energy via Buddy | Yes |
| Mega Boost Bonus(Walking) | Extra Candy |
| Mega Boost Bonus(Catch) | Extra Water-type Candy |
Buddy Distance
3 km (per Pokémon GO buddy distance)
Rewards
- Mega Energy for Blastoise
- Chance to catch Blastoise (with boosted IVs)
- Rare Candy & XL Candy
📌 Is Mega Blastoise Worth Raiding?
Yes, especially if you want one of the strongest Water-type Mega Pokémon and Water-type damage boosts for raids.
FAQ
Can Mega Blastoise be shiny in Pokémon GO?
Shiny Blastoise has been released in raids or events.
What is the recommended moveset for Blastoise?
Recommended moveset of Blastoise are Rollout which does damage of 15 under Fast Attack and Hydro Pump of 135 under Charged Attack.
Are Shadow Pokémon better?
Yes—Shadow forms have +20% attack, making them excellent choices if available.
What is the best weather to raid Mega Blastoise?
Rainy weather boosts both Blastoise’s Water moves and your Electric-type attacks.
Does Mega Blastoise keep its Mega form after the battle?
Mega Evolution lasts only during battles where Mega is enabled; it does not persist outside combat.
🏁 Conclusion
Mega Blastoise is a bulky but straightforward Mega raid boss. Electric and Grass attackers will defeat it quickly, especially when supported by a strong Mega Pokémon.
Related Guides
Looking for more counters? Check out our Mega Venusaur Raid Guide, Mega Rayquaza Raid Guide, Mega Sceptile Raid Guide
Summary
- Bring Electric first, Grass second.
- Prepare for a long, potion-heavy battle.
- Dodge Hydro Cannon and Ice Beam whenever possible.
- Use a Mega Electric or Grass for team boost.
- This is a test of consistency, not speed.