+1 on Smartwool. Here in Southern California, in summer or winter, when riding a motorcycle I always wear Smartwool 100% Merino wool socks. They have different type, and I have two different kinds that I wear, both as good.
On a hot day riding all day long, when I take my foot out, it is dry. I don't find them warm or hot in this hit climate zone. They wick moisture very well.
I once rode in rain all day, at the end put my boots on the heating/air conditioning unit along with my washed sock in the hotel. Socks were nicely dried. Boots were still wet. I used the air dryer to dry it further.
Further, I wear Smartwool Tee-Shirts also, along with their underpants . I wear leather pants, with Smartwool underpants to wick moisture. Very effective. Also net that Smartwool Tee-Shirts pack smaller than cotton.