Ditto to some salt with your water.
An extreme case, I know, but when in Darwin (Oz) a few years ago, during an incredibly humid period, we were exhorted while on a tour to drink plenty of water, but nobody mentioned salt - probably because it’s a dirty word nowadays.
The humidity was such that I was practically wringing my hair out every few minutes, and started to feel terribly tired. But it occurred to me that when we were living in Oman, where for a couple of months each summer we’d get the tail end of the monsoon - no rain, but about 100% humidity - we all took salt tablets, which were provided by the company.
After recalling that, I put plenty of salt on my chips at lunch (buffalo pie or quiche!) and felt much better afterwards.