T3 raid bosses

I did Jolteon months ago with a Level 30 Groudon, and level 25 Groudons...it was sunny. It was a pretty close outcome. Doubt you'd win without something similar.

Groudon is probably needed. I remember the first time Jolteon was out, I couldn't solo it, and only players with like 6 level 40 Rhydons could.

Dont know if there is sunny weather, but Jolteon is the only T3 that no one can win back in the day, not even with full squad of max iv Rhydon ( dont even need it, 3 or 4 rhydon and its times out)

Weather boosted Rhydon does Jolteon

According to the Onix solo guide, WF/HP Gyarados is viable at level 30 and VW/FP Venusaur is viable at level 35.

You'd need weather on your side to have a chance. Outside of Groudon, ground types moves lack the DPS you'll need to win.

Without Kyogre, i was timed out in neutral weather with maxed 100% sceptiles and 31-35 FP Venusaurs vs Onix. However i loss few seconds before battle loaded, so with better phone and luck its possible. Next try i used 35 lvl Kyogre but still had only 10 sec when he died. Pretty annoyed T3 to solo- no any dodging, just tap, tap, tap. Wasnt fun :)

Someone did it with 6 lvl 40 C/DP Machamps in cloudy weather also