Weather boost guide
The 7 in-game weather states each boost specific types. A boosted mons spawns at level 25 instead of 20 (so 50 % more dust on catch), takes +25 % damage from same-type attacks in raids, and is more likely to spawn in the wild. Forecast is checked once per hour using your phone’s location.
Same-type moves deal +25 % damage when the attacker’s type matches the active weather. Stacks multiplicatively with STAB and type effectiveness. A boosted Psychic attacker out-DPSes most non-boosted alternatives — even with otherwise lower base stats.
Wild and raid catches in matching weather spawn at level 25 minimum instead of level 20. That’s a higher CP floor + 50 % more catch dust. Boosted catches show a swirly icon next to their CP.
Boosted types are more likely to spawn nearby. Sunny in particular triggers Grass / Fire / Ground waves. Plan shiny hunts around forecast.
Raid bosses caught in boosted weather still have the standard 10 / 10 / 10 IV floor — the boost is to level, not IVs. Boosted raid catches show CP up to 2 100+ vs ~1 750 normal.
- Raid in boosted weather when it lines up with the boss’s type — a Sunny-boosted Mega Fire raid is borderline trivial vs neutral weather. Use /raid counters → to plan.
- Power up boosted catches first — a level-25 catch saves ~25 000 dust to reach L40 vs starting from L20.
- Hatch in matching weather — egg hatches always spawn at level 20 or your trainer level (whichever is higher), but a same-type weather boost during hatch upgrades them to L25.
- The forecast is cached for ~1 hour; quickly closing and reopening the app won’t refresh it. Plan around hour boundaries.
- In-game weather can differ from your real weather. The system uses local atmospheric data through the device API, but the publisher applies its own rules — sometimes ahead of, sometimes behind actual weather.
Weather boost mechanics in-game
Weather is the single biggest IV-quality lever in the game that costs you nothing extra. The right weather turns trash spawns into raid-ready stats and gives your counters a free 1.2× damage multiplier. This page lists which weather boosts which type, what changes when boosted, and how to plan around it.
The seven weather conditions
Pokémon GO recognises seven weather states — Clear / Sunny, Cloudy, Rainy, Snow, Fog, Windy, Partly Cloudy. Each boosts 1-3 specific types. The mapping is fixed across all regions and time zones; only your real-world weather data drives it.
What changes when a mons is weather-boosted
Wild encounters: level 25-35 (vs 1-30 normally) and IV floor 4 / 4 / 4. Raid catches: CP range is bumped to the boosted tier. Eggs hatch at level 22 instead of 20 (small but compounding). In battle, your attacker deals 1.2× damage on STAB attacks of the boosted type AND is treated as +5 effective levels.
Tactical timing
Stack weather with your priorities: walk-to-hatch on Cloudy days for Rock/Fighting eggs, time raids for matching weather to boost your top counters, do Community Day in matching weather to maximise hundo-hunt yield. See current weather conditions in-game; pair with the raid counter tool to plan which day to attempt which boss, and the type chart for the underlying multiplier table.
FAQ
How does weather boost work in-game?
When in-game weather matches a mons type, three things happen: that type spawns more often, CP at capture is boosted (+5 levels equivalent), and IV floor jumps to 4 / 4 / 4. Boosted attacks deal 1.2× damage in battle. Cloudy boosts Fighting + Rock; Sunny boosts Fire + Grass + Ground; Rain boosts Water + Electric + Bug; Snow boosts Ice + Steel; Windy boosts Dragon + Flying + Psychic; Fog boosts Dark + Ghost; Partly Cloudy boosts Normal + Rock.
What CP and level do weather-boosted catches arrive at?
Boosted wild encounters spawn at levels 25-35 (vs 1-30 normally), and the IV floor lifts from 0 / 0 / 0 to 4 / 4 / 4. Higher level + higher floor means weather-boosted catches average roughly 90 % IV floor + are immediately raid-ready at level 30. Save Pinap Berries for these.
Does weather boost stack in raids?
Yes — for the attacker. If your attacker's primary type is boosted by current weather, you deal 1.2× damage and your attacker is treated as +5 levels (CP up ~10%, HP up ~5%). Stack a Fire attacker on a Sunny day against an Ice raid boss for 1.6 (SE) × 1.2 (boost) = 1.92× damage.
Are raid bosses also weather-boosted?
Yes — and it's a double-edged sword. A weather-boosted boss has higher CP at capture (potentially great IVs once caught) but hits harder in the fight. Plan around it: Cloudy + a Fighting boss means it hits your Psychic counters extra hard. The /raids page flags weather-boost status for current bosses.
Can weather change mid-trade or mid-raid?
Weather updates roughly hourly based on real-world conditions in your area. Mid-raid weather is locked at the moment you start the fight. For trade-time CP, only the moment of receipt matters — receive at noon on Cloudy and your trade arrives weather-boosted even if Sunny by the time you check.