I am going to be the slight heterodox here. Assuming that we are talking about summer, I probably need long pants and a shirt. The climate in my region gives us hot summers (90+degrees high). But by far the worst is the stifling humidity. It’s really awful and while I love the region I live in, I love it in spite of summer temperatures. To boot, the nights don’t cool off much and summer is the least wind we get all year.
You get the picture.
My favorite pants (long, slightly baggy) are a sort of nylon canvas that has a texture like cotton, but doesn’t absorb any water like cotton and stays dry all day which means I stay comfortable. It’s a very thin but surprisingly sturdy, rugged fabric. I have not babied it in the slightest and it’s still perfectly good. No holes or tears. It won’t stain. I use them all the time for the last 15? 20? Years and they have been great.
To be clear, they don’t at all feel “plasticy.” They feel like a cotton canvas. The surface must be brushed. And whatever sweat I emit just goes through and I feel as cool as I can given the humidity.
I also wear a t-shirt, but those being made of cotton are the parts that get hot, damp and uncomfortable. Occasionally I have found a shirt that is somewhat like the pants, but they are not as durable so they don’t get worn as often.
Another, even more technical point: I live in tick territory. We have all nasties, including the lone star tick. And since I have tall grass and tress, ticks are going to find me.
My tick-abatement approach has been to wear a pair of compression shorts under the pants. These do have most of the downsides associated with nylon-spandex, but they stop tick migration. If a tick starts down by my leg and crawls up, it hits the cuff and they just stop, And if one starts up and travels down, they stop at the waistband.
That might be too much for some, but a defense against ticks works for me.
This system works for me. If helps you, great! If it the worst thing in the world for you, that’s fine too.
Eric