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Water temperature in Philadelphia (PA) in August

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Is it warm enough to swim in Philadelphia in August? Average water temperature in Philadelphia in August is 77.4°F and therefore suitable for comfortable swimming. The warmest water in Philadelphia in August is 84.2°F, and the coldest is 71.6°F. To find out the water temperature today and in the coming days, go to Current water temperature in Philadelphia

Changes water temperature in Philadelphia in August 2025, 2024

To get an accurate forecast for the water temperature in Philadelphia for any chosen month, compare two years within a 10 year range using the chart below.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024
August 180.6°F 
August 280.6°F80.6°F
August 377°F82.4°F
August 475.2°F 
August 573.4°F 
August 673.4°F78.8°F
August 775.2°F78.8°F
August 875.2°F78.8°F
August 975.2°F78.8°F
August 1075.2°F 
August 1177°F75.2°F
August 1277°F 
August 1377°F 
August 1478.8°F77°F
August 1580.6°F77°F
Day 2025 2024
August 1680.6°F75.2°F
August 1778.8°F75.2°F
August 1878.8°F75.2°F
August 1977°F73.4°F
August 2073.4°F71.6°F
August 2173.4°F71.6°F
August 2271.6°F71.6°F
August 2371.6°F71.6°F
August 2471.6°F71.6°F
August 2571.6°F71.6°F
August 2673.4°F75.2°F
August 2775.2°F75.2°F
August 2871.6°F77°F
August 2969.8°F77°F
August 30 77°F
August 3169.8°F77°F

Philadelphia 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

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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 Philadelphia 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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