Pokémon Ultra Moon

You can find Yanmega in Pokémon Ultra Moon at Ultra Space Wilds at level 60.

Where	How	Levels	Rate
Ultra Space Wilds	Fixed encounter	60	Fixed

Pokémon Ultra Sun

You can find Yanmega in Pokémon Ultra Sun at Ultra Space Wilds at level 60.

Where	How	Levels	Rate
Ultra Space Wilds	Fixed encounter	60	Fixed

Pokémon Legends: Arceus

You can find Yanmega in Pokémon Legends: Arceus at Grueling Grove, Heavenward Lookout, Wayward Wood at levels 35 to 38, and everywhere below.

Where	How	Levels	Rate
Grueling Grove	Walk	35-38	20.4%
Heavenward Lookout	Walk	35-38	7.5%
Wayward Wood	Walk	35-38	2.4%
Islespy Shore	Walk	35-38	1.5%
Coronet Highlands	Walk	35-38	0.6%
Obsidian Fieldlands	Walk	35-38	0.4%
Cobalt Coastlands	Walk	35-38	0.2%

Pokémon Black 2

You can find Yanmega in Pokémon Black 2 at Pinwheel Forest and Route 3 at levels 57 to 58.

Where	How	Levels	Rate
Pinwheel Forest	Grass spots	57	5%
Route 3	Grass spots	58	5%

Pokémon White 2

You can find Yanmega in Pokémon White 2 at Pinwheel Forest and Route 3 at levels 57 to 58.

Where	How	Levels	Rate
Pinwheel Forest	Grass spots	57	5%
Route 3	Grass spots	58	5%

Look up another Pokémon