The water temperature? Well, I actually stuck a thermometer in it, and measured 58 F. In a steamer wetsuit it was quite bearable. Low-top booties, but my feet didn't get cold in the short time I was sailing. It helped that I managed not to fall, despite being nicely over-powered. Thanks go to my friend Lucy, one of the first people I taught the basics of windsurfing to, for fortuitously showing up and taking this picture.