CuzzA, I don't tolerate cold very well. I was thinking it would be more like 70 or 72. I'll contact my dive instructor down there to see if I can wear a 7 mm. They carry Scubapro wetsuits, which I imagine would be pricey if I needed to buy one. Hopefully, they'll have one in their rental fleet.You might be cold in a 5 mil scuba suit. Water is around mid to low 60's.