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Philadelphia water temp

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This data the coastal Philadelphia water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current water temperature in Philadelphia

Water temperature in Philadelphia today is 71.6°F. Based on our historical data over a period of ten years, the warmest water in this day in Philadelphia was recorded in 2023 and was 78.8°F, and the coldest was recorded in 2024 at 68°F. Water temperature in Philadelphia is expected to be constant 71.6°F in the next 10 days. September average water temperature in Philadelphia is 70.9°F, the minimum temperature is 62.6°F, and the maximum is 80.6°F.

The swimming season in Philadelphia lasts from June to September. During those months, Philadelphia water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Philadelphia in winter reaches 39.9°F, in spring 53.4°F, in summer the average temperature rises to 76.3°F, and in autumn it is 60.6°F.

Philadelphia water temperature now


September 6, 2025
today temp
71.6°F
September 5, 2025
yesterday temp
71.6°F


Current temperature and weather

Data in a table show Philadelphia temperature today (September 6, 2025). For more information and forecast for a few days, go to the weather forecast Philadelphia.

0-3 h3-6 h6-9 h9-12 h
76.1°F73.2°F72.1°F78.3°F
12-15 h15-18 h18-21 h21-24 h
90.9°F88.3°F80.2°F71.2°F

You may also be interested in other sections of our site for Philadelphia: Sunrise and Sunset

Philadelphia water temperature by month

These figures shows the average, minimum and maximum monthly water temperature in Philadelphia. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Philadelphia on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

MonthAvrMinMax
January39.2°F33.8°F50°Fcold
Water temperature in Philadelphia in January
February39°F33.8°F50°Fcold
Water temperature in Philadelphia in February
March43.5°F35.6°F55.4°Fcold
Water temperature in Philadelphia in March
April53.2°F44.6°F64.4°Fcold
Water temperature in Philadelphia in April
May63.3°F51.8°F75.2°Fcold
Water temperature in Philadelphia in May
June72.5°F64.4°F84.2°Fwarm
Water temperature in Philadelphia in June
July79°F73.4°F86°Fhot
Water temperature in Philadelphia in July
August77.4°F71.6°F84.2°Fhot
Water temperature in Philadelphia in August
September70.9°F62.6°F80.6°Fwarm
Water temperature in Philadelphia in September
October61°F53.6°F68°Fcold
Water temperature in Philadelphia in October
November50°F39.2°F64.4°Fcold
Water temperature in Philadelphia in November
December41.4°F37.4°F50°Fcold
Water temperature in Philadelphia in December

Chart monthly average water temperature in Philadelphia

Water temperature in Philadelphia

Where is the warmest sea water in the world?

If you want to plan a vacation on the beach and enjoy the warm sea, choose the day of the year, region and the minimum comfortable sea/ocean temperature that interests you. As a result, you will get a list of countries and cities in which the average sea temperature or maximum temperature on this day over the past 10 years exceeds your chosen value

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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