We haven't spent any of the truly HOT months here with our 4 year old Lab, Finn. He's only experienced October and November- but suffice to say, they adapt- and do so quite well with a bit of help/understanding from their humans
There were lots of great suggestions already shared by fellow dog lovers. I'll add that a Coolaroo bed is nice to have on the lanai.
Original Elevated Pet Bed - Small | Coolaroo
Finn is an English Lab with a particularly thick, wavy coat. A well-meaning lady shared the name of a groomer and suggested I have my dog's coat shaved "so he'd be cooler."
Here's why that's NOT a good idea:
Should I Shave My Lab (+Science of Why You Shouldn't)
We did walks and dog park visits early in the morning (Atlas and Brinson Perry) when it was cooler- and walks in the early evening.
I never had the chance to look into dog parks or playcares with swimming pools- I imagine this would be quite popular since lakes and ponds aren't safe due to potential for gators.
While we're from NY, Finn is from Mora, Minnesota- about an hour north of MSP. It would be awesome to meet Blondie and her humans someday