How wet is the wet season?
I normally visit SE Asia a couple of times a year during the English winter (typically November and March).
During these months the weather in Thailand is normally very nice. However, I was thinking of visiting July time this year which is middle of the rainy season. I've been to Singapore many times, which has a fairly consistent climate of about 160 mm of rain each month and didn't notice it being particularly rainy. Bangkok is about 180 mm during the rainy season, so it doesn't look much worse than Singapore is all year round. However, you do hear some horror stories about flooding in Bangkok when it rains.
So how wet is the wet season. Does it seriously impinge on nocturnal activities?