We have hiked on every island including Oahu... but never did Diamond Head. Too touristy I guess. Never been bothered by heat on Hawaii. But have been annoyed with it being too cool and windy many times in Hawaii.

If you don't wear shoes, you haven't assimilated, so I have heard.

Not very pleasant if there aren't trees to provide shade. The Diamond Head for example....

Nah. Hiking in Hawaii is awesome.

Winter weather verification from last year. Did surprisingly well despite it not being a true winter: Plus its never to early to start getting hyped. Way too early predictions for next year: