 Here's the marine forecast from the Tock of Delmarva Weather Center. Heat advisory this afternoon with sunshine at a high of 92 degrees. Current water temperature is at 65 degrees. Small craft advisory today through the rest of the week with south winds 10 to 20, rising seas to 4 to 5 feet tonight. For Rehoboth Beach, 533 p.m. low tide, 1156 p.m. high tide, 615 a.m. low tide. For Cambridge, 241 p.m. low tide, 818 p.m. high tide, 226 a.m.,