New Hampshire water temperature in May

Can you swim in New Hampshire in spring? In May sea water temperature throughout New Hampshire is not yet warm enough for swimming and does not exceed 68°F. Based on average water temperature observations over the past ten years, the warmest ocean in New Hampshire in May was 50.4°F (in Hampton), and the coldest sea 49.8°F (in New Castle). To find out the sea temperature today and in the coming days, go to Current sea temperature in New Hampshire

New Hampshire sea surface temp in May

New Hampshire cities and resorts with the values of the average water temperature in May 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 New Hampshire any day over a period of the last ten years, select the month

Places with the warmest average ocean water temperature in New Hampshire in May. Also indicated are the maximum and minimum temperatures in May for these locations based on observations over the past 10 years

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Our report for United States 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.