I usually bring a small face / sweat towel to mop my brow when sweat builds up (and it doesn't evaporate at these humidity levels). I haven't needed it until this week but forgot...noted. Today it hit 90 degrees F and it's been hot for this time of year.
Hopefully I adapt to the heat a bit, it just takes awhile each year to get used to it again. My ideal condition is about 30 degrees F cooler than it was this week (low 50's F / ~10-12 deg C).