Niantic has announced that from February 23rd, 2018 until March 5th, 2018, players of Pokémon GO will have the chance to catch the Legendary Pokémon Kyogre, Groudon and Rayquaza in Raid Battles.

Kyogre and Groudon Join Rayquaza for a Legendary Week of Raid Battles!

Trainers, Now is the time to test your strength! Legendary Pokémon Kyogre and Groudon return to Raid Battles alongside Rayquaza for a limited time. Now is an excellent chance to finally catch all three ancient Legendary Pokémon originally discovered in the Hoenn region!

Kyogre, Groudon, and Rayquaza each have their own strengths and weaknesses, so challenging all three will take skill! Power up your strongest Pokémon, grab your friends, and head to nearby Gyms for a chance to battle and catch them from February 23 until March 5.

We’re in for some legendary battles, and the overall result will be exciting! If Rayquaza is defeated more than Kyogre and Groudon combined, Pokémon that typically prefer windy weather (for example, Bagon) are more likely to hatch from Eggs from March 5 to March 16. If not, Pokémon that prefer sunny or rainy weather (like Trapinch or Lotad) are more likely to hatch.

These battles will be tough, so we have new special boxes debuting on February 24, containing Raid Passes to help you prepare. Visit the in-game store to find out more.

Did you know Pokémon is celebrating a ‘legendary’ year in 2018? You can learn about more about these and other Legendary Pokémon at Pokemon.com/Legendary.

Don’t miss this opportunity to add these Legendary Pokémon to your team. Stay safe, and happy exploring!

Source: https://pokemongo.nianticlabs.com/en/post/legendaryweek022318/