World sea water temperatures

Water temperature in Seabrook (NH) in August

Is it warm enough to swim in Seabrook in August? Average water temperature in Seabrook in August is 66.4°F and therefore is not suitable for comfortable swimming. The warmest sea in Seabrook in August is 73.8°F, and the coldest is 60.6°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Seabrook

Changes water temperature in Seabrook in August 2025, 2024

To get an accurate forecast for the water temperature in Seabrook for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Seabrook, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of August.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
August 165.1°F67.3°F61.9°F70.9°F
August 264.4°F66.6°F61.5°F70.9°F
August 364.6°F66.6°F61.9°F72.1°F
August 464.9°F66.6°F63°F70.3°F
August 565.5°F67.3°F63.9°F68.7°F
August 666.4°F66.6°F63.3°F69.1°F
August 767.1°F66.2°F63.9°F69.1°F
August 867.1°F66°F64°F69.8°F
August 966°F66°F63.5°F69.6°F
August 1065.7°F65.7°F63.1°F70.2°F
August 1166.2°F66.6°F63.5°F69.8°F
August 1267.5°F66.4°F64°F69.6°F
August 1368°F65.1°F63.9°F71.4°F
August 1467.1°F65.7°F63.5°F73.8°F
August 1567.5°F67.1°F62.4°F71.6°F
Day 2025 2024 Min Max
August 1666.7°F66.7°F63°F70.9°F
August 1767.3°F66.6°F63.3°F71.4°F
August 1865.8°F66.6°F62.4°F70.9°F
August 1965.8°F66.4°F61.7°F70°F
August 2065.1°F67.1°F61.5°F69.8°F
August 2164°F65.1°F61.9°F68.9°F
August 2264.6°F63.5°F61.5°F68.5°F
August 2364.8°F64.4°F61.7°F68.5°F
August 2464.6°F64.8°F62.2°F70.2°F
August 2564.6°F64.6°F63.1°F70.7°F
August 2664.4°F64.8°F62.2°F71.6°F
August 2764.4°F65.7°F62.1°F71.8°F
August 2864°F65.5°F63.9°F70.9°F
August 2963.3°F65.3°F60.6°F70.5°F
August 3063.3°F65.3°F61°F70°F
August 3162.6°F65.5°F61.7°F70.2°F
Seabrook water temp chart in August

Average water temperature in Seabrook in August over a decade

20162017201820192020
67.3°F65.1°F68.9°F66°F67.3°F
20212022202320242025
68.7°F68°F64.6°F65.8°F65.7°F

Seabrook sea state in August

Chart comparing the height of waves in Seabrook in August over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Seabrook in August

Seabrook water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in August?

Want to know where the water temperature in August is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in August. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
North Beach66.2°F60.6°F73.4°F
Jenness Beach66°F60.4°F73.2°F
Wallis Sands Beach65.8°F60.3°F72.7°F
Portsmouth65.8°F60.3°F73°F
Ipswich66.6°F60.4°F73°F
Crane Beach66.6°F60.4°F73°F
New Castle65.7°F60.1°F72.7°F
Rockport66.7°F60.3°F73.2°F
Kittery65.5°F60.3°F71.1°F
Essex66.6°F60.3°F72.7°F

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Seabrook 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.

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