September 2023 looks to be a very exciting month for Pokemon GO Raids as it features the return of two powerful Ultra Beasts, in addition to some classic Legendary and Mega Pokemon!

These are all of the Pokemon that will be Legendary and Mega Raid bosses in September 2023 and what dates they will be in Raids:

September 2023 Pokemon GO Legendary & Mega Raid Bosses & Dates

DateRaid TypePokemonShiny Available?
September 1-85-Star•Kartana
(Northern Hemisphere)
Kartana Pokemon GO
•Celesteela
(Southern Hemisphere)
Celesteela Pokemon GO		No
September 1-16MegaMega Manectric
Mega Manectric Pokemon GO		Yes
Shiny Manectric Pokemon GO
September 8-165-Star•Kartana
(Southern Hemisphere)
Kartana Pokemon GO
•Celesteela
(Northern Hemisphere)
Celesteela Pokemon GO		No
September 16-235-StarGenesect (Burn Drive)
Genesect Pokemon GO		Yes
Shiny Genesect Pokemon GO
September 16 – October 6MegaMega Gardevoir
Mega Gardevoir in Pokemon GO		Yes
Shiny Gardevoir Pokemon GO
September 23-October 65-Star•Raikou
Pokemon GO Raikou
•Entei

•Suicune
Suicune Pokemon GO		Yes
Shiny Raikou Pokemon GO
Shiny Entei Pokemon GO
Shiny Suicune Pokemon GO
The Raid rotation in Pokemon GO changes at 10 AM local time. These Pokemon will rotate in and out of Raids at this time on the specified dates.

With all of the Pokemon apart from the two Ultra Beasts, Kartana and Celesteela, having shiny versions in the game, it is a great month for Raiding.

The odds of encountering shiny Legendaries from Raids are 1 in 20, while the odds of encountering a shiny Pokemon after winning a Mega Raid are 1 in 64.

Additionally, September 2023 is also the first time that Kartana and Celesteela will be appearing in both the Northern and Southern Hemispheres. This is excellent news for players who missed out on catching them when they were exclusive to half of the world.

Pokemon GO September 2023 Raid Schedule

Also, if there is a particular 5-Star Raid boss you want to catch, don’t miss the September 2023 Raid Hours!