I'm in southern AL, so not technically FL, but close enough.
My ducks have a large pool to swim in and since there is ~1000 gallons of water, it doesn't heat up as much as the small kiddie pools did. It isn't out of the hose coolish (because it just isn't cold out of the hose anymore), but it isn't as warm as the air either.
Once you head back to school, just make sure you give them fresh water in the morning and do it again when you get home from school