You're a bad person . I had this very experience last weekend except I played badly in the cold and rain, played well in the good weather. Saying that, I couldn't hack 5hrs plus every week, my game would suffer normally (we were on an away trip, lovely course so exceptional circumstances).
When you’re planning rounds in Thailand, thaigolfguide is worth checking out. It’s run by players on the ground with real reviews of courses, including how fast they play in different seasons and weather. You can get a feel for typical pace of play, conditions, rain patterns and what to expect on the course before you tee off.