I tried it several times in Chiang Mai. Need 30 min drive to the hills.
Started at 7am. But it was already too late.Next I was there at 6, not alone actually. Many mates. But after 2 hours it was getting HOT. I left at 8. For me it's no fun at all. Even Tennis is a nightmare unless you would be ready to play in night times.
So at present I go only swimming.