Haven’t found water too cold to dive yet, although I’m sure it exists. LOL
I regularly dive 45-50 degree water inland in here and used a 5mm in the summer months and switch to a 7mm in the winter months. I don’t get to Florida as much as I like but will dive with you any of the 12 months of the year if I can plan the trip. :-)
I am going to be diving there this coming Saturday with a friend that just moved to Gulf Shores, MS, probably at Vortex Springs.