Every month, Pokemon GO has a new selection of Mega and Legendary Raid bosses to battle, and May 2023 looks to be pretty exciting!
This month features the debut of a brand-new Mega Pokemon, a new shiny Legendary, and the return of some fan-favorite Bug-types as Raid bosses!
The following Mega and Legendary Pokemon will be available to battle in Tier 4 or Tier 5 Raids at certain points during May 2023:
- Tapu Bulu
- Mega Slowbro
- Genesect (Shock Drive)
- Mega Scizor
- Tapu Fini
- Mega Pinsir
- Regigigas
- Mega Altaria
If you want to catch any of the Legendary Pokemon in Raids, the best time will be during the May 2023 Pokemon GO Raid Hours. Each Legendary Pokemon gets at least one Raid Hour, where Raids featuring it will be much more frequent!
Refer to the table below to find out the dates that these Mega and Legendary ‘Mon will be in Raids as well as whether you will be able to catch the shiny version.
Pokemon GO 4-Star & 5-Star Raid Dates in May 2023
| Raid Boss | Dates in Raids | Shiny Available? | Raid Difficulty |
Tapu Bulu | April 17 – May 2 | Yes | 5-Star |
Mega Slowbro | April 17 – May 2 | Yes | 4-Star |
| Genesect (Shock Drive)  | May 2 – May 9 | Yes | 5-Star |
Mega Scizor | May 2 – May 11 | Yes | 4-Star |
Tapu Fini | May 9 – May 24 | Yes | 5-Star |
Mega Pinsir | May 11 – May 24 | Yes | 4-Star |
Regigigas | May 24 – June 1 | Yes | 5-Star |
Mega Altaria | May 24 – June 1 | Yes | 4-Star |
Of course, even if the shiny version is available, you will still need to be lucky to encounter one. The exact odds of catching shiny Legendaries in Pokemon GO is 5%, or 1 in 20!
In addition to these Mega and Legendary Pokemon GO Raids, Regidrago will also be returning to Elite Raids in May 2023! Here is how to beat Regidrago in Pokemon GO so you can catch this ultra-rare Legendary!