Don’t worry we’ll take care of you. The dry heat thing is real and we’ll have shade and wet towels, makes all the difference. I work outside and like to wear a lightweight sun hoody and then a cotton longsleeve over that. Cotton T absorbs lots of water and it’s like wearing a personal swamp cooler as long as the humidity is low. Plus two shirts creates a boundary layer from the sun. Outer shirt takes the UV but the inner shirt against your skin stays much cooler.