I live in Las Vegas and try and get outside as often as possible so have accumulated a good amount of experiences on warm weather hikes. The best I’ve found so far are Outdoor Research Ferrosi pants and Prana Brion or Zion pants. A third option would be Kuhl Renegades. I’ve hiked in all three on some pretty warm days. I don’t have experience with tights so can’t contribute there. I hope this helps!