10point - I was there last year (Windermere) 2023 May 27th through June 2nd. I was well prepared for cold, for wet, for nasty. What happened? Seven days of hot and humid. I mean HOT, like I've never experienced north of the Soo during "week two". 85-95F estimated each day. No fire ban when I went in, but I knew there was one as the days went on, as I daily observed MNR water bombers flying W (from Chapleau?) in the early AM and then back E in the later PM (It was the wildfire NE of White River along 631). Too hot for any campfire anyway. The black flies? None. The skeeters? JHFC they were prolific!
I was solo, so I did not achieve as much hard fishing time as I desired, but the fishing went south - no breeze or wind, no rain, no walleye chop. Deadsville.
You won't regret that week. Magnificent body of water with almost no development. Easy to get off track.
Keep it booked. The camp operators are TOP NOTCH.