 Here's the marine forecast from the Tock of Delmarva Weather Center. Heat advisory for this afternoon with sunshine at a high in the mid-90s. Current water temperature is at 68.5 degrees. Small craft advisory from this afternoon through Saturday with south winds of 15 to 25 knots, seas of 3 to 4 feet. For Rehoboth Beach, low tide 145 p.m., high tide 822 p.m., low tide 252 a.m. For Cambridge, high tide 415 p.m., low tide 1038 p.m., high tide 459 a.m. tomorrow.