 Could see areas of fog as well, reducing visibility to 3 nautical miles or less. Friday, south winds of 5 to 15 knots and seas of 3 to 4 feet. At Rehoboth Beach, low tide at 2.06 a.m. and high tide at 7.49 a.m. Cambridge, low tide at 9.48 p.m., high tide at 4.13 a.m. Water temperature 68 degrees.