Assuming you will be hiking in warm to hot weather, here are some general tips:
-Wear light, breathable fabrics such as cotton or linen. Avoid synthetic materials like polyester, which can trap heat and make you sweat more.
-Stick to light colors like white, beige, or light green, which will reflect heat better than dark colors.
-Dress in layers so you can peel off clothing if you get too warm. A tank top or t-shirt with a lightweight long sleeve shirt over it is a good option.
-Wear shorts or skirts instead of pants. If you do wear pants, choose ones made from a lightweight fabric such as nylon.
-Protect your skin from the sun with sunscreen and a hat with a brim. Wear sunglasses to protect your eyes from the glare of the sun off the trail.
-Wear comfortable shoes that provide good support for your feet and ankles. Hiking boots are not necessary unless the terrain is very rugged; sneakers or even sandals are fine for most trails.