Cool weather for this ol' dog. I don't mind a good sweat but too much is a distraction.
First year I was cutting I dropped a couple gums in July. A heat wave set in and they lay on the ground for a month. It was just too hot and miserable out there to buck 'em up. Well, the termites found 'em and got to work. I stepped in a yellowjacket nest while dropping a nice maple that year, too. Ain't gonna happen again, I can tell yas that.
The woods is muddy in winter but in this flat terrain, it's not a deterrent to getting my rounds loaded out. It makes for a pigged up mess but they come outta there. I much prefer cool to cold weather for working up firewood. No sweat. No bugs, bees or ticks.