Is Cape Cod National Seashore too cold to swim in summer? In July sea water temperature in some cities of Cape Cod National Seashore is above 68°F and it is enough for comfortable bathing. Based on average water temperature observations over the past ten years, the warmest sea in Cape Cod National Seashore in July was 68°F (in Herring Cove Beach), and the coldest water 66.4°F (in Coast Guard Beach). To find out the sea temperature today and in the coming days, go to Current sea temperature in Cape Cod National Seashore
Cape Cod National Seashore cities and resorts with the values of the average water temperature in July in recent years.
For more detailed information about water temperature, surf forecast, weather and time of sunrise and sunset in any specific area of your interest, just click on a city name. For ease of search, all places are also grouped by the first letter of the name.
To find out what the water temperature was in Cape Cod National Seashore any day over a period of the last ten years, select the month