depends on WHERE in South East Asia... Kuwait has it's moments... Qatar is VERY humid... it's been a long time since I was in FL but it was the worst humidity I've ever experienced... and honestly... it didn't bug me for shit... though that could be because I spent it in shorts and a t-shirt at the start of my deployment... and was so ready to go home after... (it was our staging base for our flights back to the US) that NOTHING could bug me
Northern Iraq was dryish... not like Arizona dry... but not as humid as I'd remembered FL or even Connecticut being (my first real intro to humidity... so it may be exaggerated in my memory)
all three places you'd sweat like no other... but with Temps in the 120-130 range... humidity or no... your ass is sweating!