Castform best PvP IVs
The best Castform IVs for Great League in Pokémon GO are 0/14/15 — 0 attack, 14 defense and 15 HP. That spread reaches CP 1496 at level 41.5 and gives the highest stat product of all 4,096 possible IV combinations. A perfect 15/15/15 Castform ranks #2,394 of 4,096 in Great League, at 94.7 % of the best stat product.
Castform (Rainy), Castform (Snowy), Castform (Sunny) share the same base stats and rank exactly the same.
Open Castform 0/14/15 in the IV ranker
Best Castform IVs by league
| League | Rank 1 IV | Lv | CP | 15/15/15 |
|---|---|---|---|---|
| Little | not eligible — must be unevolved and able to evolve | |||
| Great | 0/14/15 | 41.5 | 1496 | #2,394 |
| Ultra (under cap) | 15/15/15 | 50 | 1845 | #1 |
| Master | 15/15/15 | 50 | 1845 | #1 |
Castform cannot enter Little League, because it cannot evolve. The format takes only Pokémon that have not evolved yet and still have an evolution ahead of them — the 500 CP cap is not the only rule.
Castform never reaches the 2,500 CP cap of Ultra League: at level 50 it maxes out at CP 1845. In that league nothing is held back by the cap, so the highest IVs simply win and 15/15/15 is best — the same as in Master League.
Top 10 Castform IVs for Great League
| # | IV | Lv | CP | Atk | Def | HP | % |
|---|---|---|---|---|---|---|---|
| 1 | 0/14/15 | 41.5 | 1496 | 110.9 | 122.1 | 149 | 100.0 |
| 2 | 0/15/14 | 41.5 | 1497 | 110.9 | 122.9 | 148 | 100.0 |
| 3 | 0/13/15 | 42 | 1500 | 111.2 | 121.6 | 149 | 100.0 |
| 4 | 0/14/13 | 42 | 1497 | 111.2 | 122.4 | 148 | 100.0 |
| 5 | 0/11/15 | 42.5 | 1500 | 111.6 | 120.4 | 150 | 99.9 |
| 6 | 0/15/12 | 42 | 1498 | 111.2 | 123.2 | 147 | 99.9 |
| 7 | 0/15/10 | 42.5 | 1499 | 111.6 | 123.6 | 146 | 99.9 |
| 8 | 2/14/15 | 40.5 | 1499 | 111.8 | 121.3 | 148 | 99.5 |
| 9 | 2/15/14 | 40.5 | 1499 | 111.8 | 122.1 | 147 | 99.5 |
| 10 | 2/14/13 | 41 | 1500 | 112.1 | 121.7 | 147 | 99.5 |
How good is Castform in the current meta?
PvPoke rates Castform #261 of 1,154 in Great League, scoring 80.7 out of 100, most often with Hex, Weather Ball Rock, Energy Ball.
| League | PvPoke rank | Score | Usual moves |
|---|---|---|---|
| Great | #261 of 1,154 | 80.7 | Hex, Weather Ball Rock, Energy Ball |
That answers a different question from the rest of this page. The IV ranks above tell you which Castform to build; this tells you whether it is worth building at all. Rankings and movesets come from PvPoke, who run the battle simulation behind them, and change as the meta does.
How to find a good Castform
The search-string generator builds a string you can paste into the search bar in Pokémon GO. It finds catches whose CP, HP and appraisal stars match the top IV spreads above, including pre-evolutions, so you can check a whole storage box in one go.
To check a Castform you already own, open the IV ranker and set its IVs.
Castform PvP IV questions
What are the best Castform IVs for Great League?
0/14/15 — 0 attack, 14 defense and 15 HP. It reaches CP 1496 at level 41.5 and has the best stat product of all 4,096 IV combinations.
Is a 15/15/15 Castform good for Great League?
No. A perfect 15/15/15 Castform only ranks #2,394 of 4,096 in Great League. Under a CP cap, low attack lets a Pokémon reach a higher level, which gives more defense and HP for the same CP.
What CP is a rank 1 Castform in Great League?
CP 1496 at level 41.5, without best buddy. Best buddy adds one level, which changes both the CP and the ranking.
Ranked by stat product (attack × defense × HP) at the highest level under the CP cap, out of all 4,096 IV combinations, without best buddy. Shadow and purified Pokémon rank the same as regular ones. Little League checks the 500 CP cap and that the Pokémon is unevolved with an evolution ahead of it; limited-time cups may add further restrictions. Base stats and meta rankings from PvPoke, used under the MIT licence. Updated 2026-11-11.