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Water temperature in Philadelphia (PA) in January

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Is it warm enough to swim in Philadelphia in January? Average water temperature in Philadelphia in January is 39.2°F and therefore is not suitable for comfortable swimming. The warmest water in Philadelphia in January is 50°F, and the coldest is 33.8°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 January 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
January 141°F42.8°F
January 2 41°F
January 339.2°F39.2°F
January 439.2°F39.2°F
January 539.2°F39.2°F
January 639.2°F39.2°F
January 737.4°F39.2°F
January 837.4°F39.2°F
January 935.6°F39.2°F
January 1035.6°F39.2°F
January 1135.6°F42.8°F
January 1235.6°F41°F
January 1335.6°F39.2°F
January 1435.6°F39.2°F
January 1533.8°F39.2°F
Day 2025 2024
January 1633.8°F39.2°F
January 1733.8°F39.2°F
January 1833.8°F39.2°F
January 1933.8°F39.2°F
January 2033.8°F39.2°F
January 2133.8°F39.2°F
January 22 37.4°F
January 23 37.4°F
January 24 37.4°F
January 25 37.4°F
January 26 39.2°F
January 27 39.2°F
January 28 39.2°F
January 29 39.2°F
January 30 39.2°F
January 31 39.2°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 January?

Want to know where the water temperature in January 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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