 Here's the marine forecast from the Tock of Delmarva Weather Center. Heat advisory continues this afternoon with sunshine at a high of 97. Current water temperature is 66.2. On the water, southwest winds stay from 5 to 15 knots today and tonight with seas of 2 to 3 feet expected. For Rehoboth Beach, 3.44 p.m. high tide, 9.59 p.m. low, 3.58 a.m. high tide. For Cambridge, 5.49 p.m. low tide, 12.35 a.m. high, 7.13 a.m. low tide.