We were in BKK in March. Hottest place I have ever known -- and we live in Arizona. Humidity was suffocating. Sweated until it felt my shoes were filling. Streets so noisy we had to shout at each other from only a foot away. Fumes from motorbikes, cars, and trucks was thick as fog. Glad all stores we visited were air-conditioned. Also glad the skytrain got us home so quickly and in such comfort. Advice: wait until nightfall to do much walking about. Take some water with you wherever you go.

I live in Orlando and think that Bangkok is just a little more humid than it is here in the middle of summer and about the same temperature. We never have any problem with the heat and humidity when we are there. I guess we're used to it. What I have a problem with is the cold up north in the winter.

Weather Underground (http://www.wunderground.com) has extensive historical Travel Planning information.

Just select Bangkok and click through to the historic area. More info there than almost anyone needs!