It's something you do have to get use too. High humidity and high temps do sap my energy more noticeably. But not to be left out for seriousness, being in a hot dry climate might also leave you not realizing how bad you are until you are really bad off and very dehydrated.
Humidity over 90% on days at 90 - 95°F (32 - 35°C) does immediately feels worse than even 100°F at just 60% humidity. But with the higher humidity it seems I always know that I need to drink more and search for ways to stay cool. With high temps in low humidity, I sometimes find I don't hydrate as well as I should and also don't realize when my body is way too hot until it's almost too late.