 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 day from 5 to 15 knots today and tonight with seas of 2 to 3 feet expected. For Rehoboth Beach, 344 p.m. high tide, 959 p.m. low, 358 a.m. high tide. For Cambridge, 549 p.m. low tide, 1235 a.m. high, 713 a.m. low tide.