Mega Gyarados Raid Guide
Weak to Bug, Electric, Fairy, Fighting, Grass — every counter below is ranked by DPS against Mega Gyarados.
Best counters
Ranked by DPS against Mega Gyarados. Tap a row for full stats.
Budget counters
No Shadow, Mega or Primal forms needed.
Stats & weaknesses
- Raid tier
- Mega
- Weather boost
- Rainy, Windy
- Shiny available
- Yes
- Base Attack
- 292
- Base Defense
- 247
- Base Stamina
- 216
Weak to — use these types
Resists — avoid these types
Catch CP after the raid
The CP you will see on the encounter screen.
| IVs | Lv 20 CP | Lv 25 CP (weather) |
|---|---|---|
| 10 / 10 / 10 floor | 2,662 | 3,312 |
| 15 / 15 / 15 100% | 2,762 | 3,436 |
Raid guide
How the fight goes and what to bring.
Do not bring Psychic, Dark, Fire damage — Mega Gyarados resists it and your lobby will run out of time before it runs out of HP. Everything in the counter list above already hits for super effective damage, so pick the six highest entries you actually own and power up.
In Rainy, Windy weather the boss hits harder and survives longer, but the catch encounter is level 25 instead of 20 — a harder fight for a better reward. Bring one extra trainer on boosted runs.
On the catch screen, use Golden Razz Berries and aim for Excellent curveball throws; the shiny check happens the moment the encounter loads, so you will know before your first throw.
FAQ
How many trainers do I need to beat Mega Gyarados?
Mega Gyarados can be beaten by 2 high-level trainers with optimal counters. 4+ is comfortable, and 5–6 is the safe number in a public lobby where you cannot see anyone's team.
Can I beat Mega Gyarados without Shadow or Mega Pokemon?
Yes. The best non-Shadow, non-Mega option is Regieleki at 27.529 DPS. Budget teams trade about one trainer's worth of damage, so add one or two extra bodies to the lobby.
Can Mega Gyarados be shiny?
Yes — shiny Mega Gyarados is available from raid encounters. The rate for legendary raids is roughly 1 in 20. Use a Pinap Berry if you already have the shiny and want the extra candy.
What weather boosts Mega Gyarados?
Mega Gyarados is boosted in Rainy, Windy weather. The raid is harder because the boss's moves gain a 1.2× multiplier, but the catch is level 25 instead of level 20 and the IV floor rises to 4/4/4.
Is Mega Gyarados worth raiding?
Yes. Mega Gyarados is a Mega boss worth a Remote or Premium Pass, and its Water/Dark typing has uses in both raids and GO Battle League. Aim for a high Attack IV for raid use, or a low-Attack bulky spread for Great and Ultra League.
What is the best moveset for Mega Gyarados?
The counter list on this page is for beating Mega Gyarados. For the moves Mega Gyarados should use as your attacker, open its full stats page — it lists every fast and charged move with raid DPS and PvP rankings.