Cape Cod Bay water temperature in July

Is Cape Cod Bay too cold to swim in summer? In July sea water temperature in some cities of Cape Cod Bay is above 20°C and it is enough for comfortable bathing. Based on average water temperature observations over the past ten years, the warmest sea in Cape Cod Bay in July was 21.1°C (in Barnstable), and the coldest water 19.4°C (in Duxbury Beach). To find out the sea temperature today and in the coming days, go to Current sea temperature in Cape Cod Bay

Cape Cod Bay sea surface temp in July

Cape Cod Bay 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 Bay any day over a period of the last ten years, select the month

Places with the warmest average sea water temperature in Cape Cod Bay in July. Also indicated are the maximum and minimum temperatures in July for these locations based on observations over the past 10 years

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Our report for is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.