World sea water temperatures

Water temperature in Deer Island (MA) in August

Is it warm enough to swim in Deer Island in August? Average water temperature in Deer Island in August is 67.3°F and therefore is not suitable for comfortable swimming. The warmest sea in Deer Island in August is 73.2°F, and the coldest is 61.7°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Deer Island

Changes water temperature in Deer Island in August 2025, 2024

To get an accurate forecast for the water temperature in Deer Island for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Deer Island, 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 165.8°F64.4°F63.9°F73.2°F
August 264.9°F66.7°F63.7°F71.4°F
August 365.5°F68.2°F63°F72°F
August 464.8°F69.3°F62.1°F71.4°F
August 565.8°F68.7°F63°F71.1°F
August 666.2°F67.1°F62.2°F71.1°F
August 766.4°F66°F64.4°F70.7°F
August 866.7°F65.1°F64.6°F70.3°F
August 966.4°F65.1°F63.5°F71.4°F
August 1066°F65.8°F62.8°F69.8°F
August 1166°F66.2°F61.9°F70°F
August 1266.4°F67.5°F62.2°F71.2°F
August 1367.5°F67.5°F63.9°F72.7°F
August 1469.4°F66.9°F63.9°F72.9°F
August 1568.5°F67.6°F63.5°F71.6°F
Day 2025 2024 Min Max
August 1667.8°F67.3°F63.5°F72°F
August 1767.6°F66.2°F64°F72.1°F
August 1865.8°F66.6°F63.7°F71.6°F
August 1966°F66.6°F62.6°F70.9°F
August 2065.1°F67.8°F62.2°F71.6°F
August 2164.8°F66°F62.2°F70.7°F
August 2264.4°F64.8°F62.2°F70.3°F
August 2365.3°F65.5°F62.4°F69.1°F
August 2465.5°F66°F63°F70°F
August 2567.1°F66.2°F63.9°F70.9°F
August 2666.2°F66.6°F62.4°F71.2°F
August 2766°F66.7°F64.2°F72°F
August 2865.1°F67.5°F64.4°F71.4°F
August 2965.3°F66.4°F61.7°F72°F
August 3064.6°F64.9°F62.1°F71.8°F
August 3163.3°F65.7°F62.4°F71.4°F
Deer Island water temp chart in August

Average water temperature in Deer Island in August over a decade

20162017201820192020
68.7°F65.8°F70°F66.9°F69.1°F
20212022202320242025
69.8°F68.4°F64°F66.6°F65.8°F

Deer Island sea state in August

Chart comparing the height of waves in Deer Island 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 Deer Island in August

Deer Island 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
Revere Beach67.1°F61.5°F73.6°F
Adams Shore67.3°F62.1°F73.2°F
M Street Beach67.3°F62.1°F73.2°F
Constitution Beach67.3°F62.1°F73.6°F
Weymouth67.3°F61.7°F72.7°F
Nahant Beach66.9°F60.3°F73.4°F
Chelsea67.5°F62.2°F73.9°F
Winthrop67.1°F61.9°F73.4°F
Scituate67.5°F62.1°F72.5°F
Cohasset67.5°F62.1°F72.5°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 Deer Island 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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