Wind for the simple fact that a lot of times I'm fishing on a pontoon boat (grandparents lake), so that thing gets blown like a sailboat. Even when I'm in the Champion, I hate the winds that'll leave white caps...hate them.
A few people say how they hate the heat, but I love it. The hotter the better. Less fishing preassure on the lake, and the fish (to me) are more predictable. I fished a tournament last year with a temp of 109 .