The water temp is expected to be 70F, winds from the E then S at 7mph, UV index 10, mostly sunny w/ a high of 82F. The low tide coincides w/ the early morning start and allows the swimmers to swim with the flow as the water comes back into Tamp Bay. The 3pm high tide eventually gives way to an outgoing tide that puts the swimmer on a treadmill by 6pm if they are not near their final destination.