I'm gonna go out on a limb and say this, I don't think it's the best idea to try to wash and wax just after a rain storm.
The buffer bonnets got so clogged up, I had to get regular towels to try to get the wax off. Was using NXT. Time for some beer.

 

One of the problems with doing it during high hummidity is that the wax tends to not want to fully cure after application. Then you get a wax mess and a streaky finish. Best not to wax in those conidtions!