Wear a light straw or nylon hat, soak it with water and shake it out. The evaporation will cool you down a bit. I've never tried the following, but I know the

Wear a light straw or nylon hat, soak it with water and shake it out. The evaporation will cool you down a bit. I've never tried the following, but I know the above works so this should work too: Carry a spray bottle of water, and spray your clothes and hat/head periodically. Evaporation. And the obvious, stay in the shade and cool places as much as possible.