 Here is the marine forecast from the Tarkov Delmarva Weather Center. The next low tide at Rehoboth Beach will be at 2.10pm, the next high tide at 8.47pm, and the next low tide will be at 3.07am. The next high tide at Cambridge will be at 4.35pm, the next low tide will be at 10.59pm, and the next high tide at 5.15am.