I can vouch for the fact that the Chickamauga Civil War Battlefield, where we walk most days, is VERY green . . . and humid. I spent a summer in England, many years ago, and I don't recall any days when it was humid and 95 F (35 C), so I'm not sure it's much like what you're experiencing.

That year I was in Europe, I got rather tired of being asked to say "y'all" and listening to comments about our 'wasteful' air conditioning. Consequently, when I met lifeguards from Holland and England hired to work at various summer camps on some of the work exchange programs, I was a bit gleeful when I had a chance to watch them gasping like fish on hot pavement when they got out of the plane into Chattanooga's June heat and humidity!