Mega Mewtwo Y weather boost Pokémon GO is an important mechanic to understand during Pokémon GO Fest 2026. Knowing the Mega Mewtwo Y weather boost Pokémon GO conditions can help you catch a higher-level Mewtwo, save Stardust, and quickly identify a weather-boosted hundo.
If you’re planning to raid Mega Mewtwo Y, here’s everything you need to know.
Mega Mewtwo Y Weather Boost Pokémon GO
Mega Mewtwo Y is a Psychic-type Pokémon, meaning it receives a weather boost under the following conditions.
| Weather | Weather Boost |
|---|---|
| 🌬️ Windy | ✅ Yes |
| ☀️ Sunny | ❌ No |
| ☁️ Cloudy | ❌ No |
| 🌧️ Rainy | ❌ No |
| 🌫️ Fog | ❌ No |
| ❄️ Snow | ❌ No |
| ⛅ Partly Cloudy | ❌ No |
If the in-game weather is Windy, the Mewtwo you catch after the raid will be weather boosted.
What Does the Mega Mewtwo Y Weather Boost Do?
Weather boosting increases the level of the Mewtwo encounter from Level 20 to Level 25.
Benefits include:
- Higher CP.
- Less Stardust needed to power up.
- Fewer Candy required.
- Stronger Pokémon immediately after catching it.
Mega Mewtwo Y Weather Boost CP
Weather also changes the CP range of the Mewtwo encounter.
| Encounter | CP Range |
|---|---|
| Normal Raid | 3377–3492 CP |
| Weather Boosted | 4222–4366 CP |
A weather-boosted hundo has 4366 CP.
Does Weather Affect Shiny Odds?
No.
Weather has no impact on your chances of encountering a Shiny Mewtwo.
The only difference is the Pokémon’s level and CP.
Is It Worth Waiting for Windy Weather?
If your goal is to power up Mewtwo as efficiently as possible, yes.
However, if you’re mainly farming Mega Energy or searching for a Shiny, it’s still worth raiding regardless of the weather.
Tips for Mega Mewtwo Y Weather Boost Pokémon GO
| Tip | Why It Helps |
|---|---|
| Check the weather before raiding | Windy weather provides the boost. |
| Learn the weather-boosted hundo CP | 4366 CP is the perfect weather-boosted Mewtwo. |
| Join large raid groups | Complete more raids during the event. |
| Use Golden Razz Berries | Increase your catch success. |
| Appraise every Mewtwo | Never transfer a potential hundo. |
Mega Mewtwo Y Weather Boost Pokémon GO – Frequently Asked Questions
What weather boosts Mega Mewtwo Y in Pokémon GO?
Windy weather boosts Mega Mewtwo Y.
What is the weather-boosted hundo CP?
A perfect weather-boosted Mewtwo has 4366 CP.
Does weather increase Shiny odds?
No. Weather only affects the Pokémon’s level and CP.
Is Mega Mewtwo Y worth raiding?
Yes. Mega Mewtwo Y is one of the strongest Psychic-type Pokémon available in Pokémon GO.
