Claydol solo, windy weather
I soloed claydol in windy weather. My team is really under-powered for the job based on pokebattler, however GoBattleSim gave more optimistic prediction, so I decided to give it a shot.
Claydol had ES/EQ and my team:
Kyogre A15/D15/S14 L36 W/HP
Mewtwo A11/D12/S14 L38 PC/ShB
Gengar A15/D8/S15 L31.5 H/ShB
Gengar A10/D10/S4 L34 H/ShB
Gengar A14/D12/S9 L30 H/ShB
I dodged EQ only with the gengar.
Beat him with 5 sec left on the 3rd try.

Answers
I did a Sunny Claydol solo today. I had Claydol's HP bar completely empty and I timed out at 7 seconds so I'm counting it as a win dammit.
1 lvl 32 Gengar
1 lvl 31.5 Kyogre
4 Exeggutors with BS/SoB below lvl 33
I think I could have shaved a few more seconds off with Sceptile in the last slot but Exeggutor does very well here