World sea water temperatures

Water temperature in Edgartown (MA) in August

Is it warm enough to swim in Edgartown in August? Average water temperature in Edgartown in August is 71.1°F and therefore suitable for comfortable swimming. The warmest sea in Edgartown in August is 76.5°F, and the coldest is 65.1°F. Average high air temperature in Edgartown in August is 78°F, and average low temperature is 61°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Edgartown

Changes water temperature in Edgartown in August 2025, 2024

To get an accurate forecast for the water temperature in Edgartown for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Edgartown, 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°F71.6°F68°F73.6°F
August 271.1°F72.9°F68.2°F73.9°F
August 370.2°F73.2°F68.4°F74.5°F
August 471.2°F71.6°F68.9°F74.8°F
August 571.8°F72.9°F69.4°F74.7°F
August 672.1°F73°F69.6°F75.6°F
August 769.1°F70°F68.7°F75.4°F
August 870.2°F70.3°F68.4°F75.9°F
August 971.4°F71.8°F68.5°F76.5°F
August 1069.8°F72.1°F68.4°F76.5°F
August 1170.9°F71.1°F68°F76.1°F
August 1270.5°F70.7°F68.9°F75.4°F
August 1369.3°F70.7°F68.4°F74.8°F
August 1469.8°F71.2°F68.4°F75.6°F
August 1571.6°F71.8°F68.4°F75.4°F
Day 2025 2024 Min Max
August 1670.2°F71.6°F68°F75.6°F
August 1771.2°F71.6°F66.7°F75.2°F
August 1871.6°F69.1°F65.5°F76.3°F
August 1971.2°F70.7°F65.1°F76.1°F
August 2070.7°F70.3°F65.7°F75.6°F
August 2170°F70.5°F66°F74.7°F
August 2268.7°F68.4°F65.8°F73.4°F
August 2369.1°F69.4°F65.5°F74.1°F
August 2469.3°F69.1°F65.8°F74.5°F
August 2570.3°F70.3°F67.1°F74.5°F
August 2669.1°F69.8°F65.5°F75.4°F
August 2769.3°F70°F66.6°F75°F
August 2868.4°F70.7°F66.9°F74.3°F
August 2968.7°F70.2°F66.6°F74.3°F
August 3069.8°F70.2°F67.3°F73.8°F
August 3169.1°F69.8°F66.6°F73.9°F
Edgartown water temp chart in August

Average water temperature in Edgartown in August over a decade

20162017201820192020
73°F69.6°F74.3°F71.2°F72.9°F
20212022202320242025
73.4°F73.2°F71.1°F70.9°F70.9°F

Edgartown sea state in August

Chart comparing the height of waves in Edgartown 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 Edgartown in August

Weather and climate in Edgartown in August

This data display average monthly climate indicators in Edgartown in August based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature78°F
  • Average LOW temperature61°F
  • Average rainfall days9 days
  • Average rainfall104mm/4.1''

Edgartown 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
Tisbury70.9°F65.1°F76.5°F
Oak Bluffs71.6°F65.3°F76.8°F
East Falmouth72.3°F65.3°F77.5°F
Menauhant Beach72.3°F65.3°F77.5°F
South Cape Beach72.5°F65.3°F77.5°F
South Beach69.8°F64.8°F75.4°F
Katama Beach69.8°F64.8°F75.4°F
Vineyard Haven72°F65.5°F77.2°F
New Seabury72.5°F65.1°F77.5°F
Surf Drive Beach72°F65.5°F77.2°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 Edgartown 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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