World sea water temperatures

Water temperature in South Yarmouth in August

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Is it warm enough to swim in South Yarmouth in August? Average water temperature in South Yarmouth in August is 72°F and therefore suitable for comfortable swimming. The warmest sea in South Yarmouth in August is 80.8°F, and the coldest is 64.2°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in South Yarmouth

Changes water temperature in South Yarmouth in August 2025, 2024

To get an accurate forecast for the water temperature in South Yarmouth for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in South Yarmouth, 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 171.8°F77.7°F67.8°F78.1°F
August 272.7°F76.5°F68.2°F77.5°F
August 372.7°F77.2°F68.4°F78.3°F
August 472.5°F75.9°F68.9°F77.9°F
August 573.4°F75.9°F69.3°F78.1°F
August 672.7°F76.6°F69.3°F80.1°F
August 773.8°F73.6°F67.8°F79.3°F
August 873.8°F74.8°F67.3°F79.7°F
August 974.1°F75.9°F67.3°F80.8°F
August 1073.4°F75.4°F67.1°F79°F
August 1174.8°F74.8°F66.9°F77.2°F
August 1274.8°F75.6°F67.8°F77.2°F
August 1373.4°F75.2°F67.3°F78.1°F
August 1475.2°F75.9°F67.5°F77.9°F
August 1575.7°F75°F67.5°F77.5°F
Day 2025 2024 Min Max
August 1675.2°F74.5°F67.1°F76.5°F
August 1775.6°F71.8°F65.8°F76.5°F
August 1874.7°F73.2°F64.8°F75.9°F
August 1973.4°F72.9°F64.4°F75.4°F
August 2073°F73.8°F65.1°F76.8°F
August 2171.1°F73.9°F65.7°F76.6°F
August 2270.5°F73°F65.7°F75.7°F
August 2370.5°F73°F65.5°F76.1°F
August 2470.7°F73.2°F65.7°F77°F
August 2572.1°F73.4°F65.8°F77.4°F
August 2671.6°F72.9°F64.2°F78.3°F
August 2772°F73.4°F66.2°F78.1°F
August 2871.2°F73.6°F65.8°F77°F
August 2971.6°F72.7°F65.8°F75.6°F
August 3071.8°F72.3°F66.6°F75.9°F
August 3171.8°F72.3°F66.6°F76.1°F
South Yarmouth water temp chart in August

Average water temperature in South Yarmouth in August over a decade

20162017201820192020
73.4°F70.3°F72.9°F74.8°F75.2°F
20212022202320242025
75.2°F76.1°F73.4°F74.5°F73°F

South Yarmouth sea state in August

Chart comparing the height of waves in South Yarmouth 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 South Yarmouth in August

South Yarmouth 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
West Dennis71.6°F64°F80.1°F
West Yarmouth72.1°F64.4°F79.9°F
Sea Gull Beach72.1°F64.4°F79.9°F
Seagull Beach72.1°F64.4°F79.9°F
Lewis Bay72.1°F64.4°F79.9°F
Colonial Acres Beach72.1°F64.4°F79.9°F
Hyannis72.5°F64.6°F80.4°F
Bass River71.6°F64°F78.6°F
Kalmus Beach72.5°F64.6°F80.4°F
Smugglers Beach71.6°F64°F78.6°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 South Yarmouth 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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