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Water temperature in Dahlgren (VA) in September

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Is it warm enough to swim in Dahlgren in September? Average water temperature in Dahlgren in September is 75°F and therefore suitable for comfortable swimming. The warmest sea in Dahlgren in September is 86°F, and the coldest is 66.9°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Dahlgren

Changes water temperature in Dahlgren in September 2025, 2024

To get an accurate forecast for the water temperature in Dahlgren for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Dahlgren, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of September.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
September 175.7°F79.7°F74.5°F84.2°F
September 275.9°F79.7°F74.3°F83.3°F
September 375.6°F77.7°F74.5°F84.2°F
September 476.3°F76.1°F74.8°F84.7°F
September 576.3°F75.7°F75.2°F85.6°F
September 676.5°F76.1°F75°F86°F
September 773.9°F76.6°F73.8°F86°F
September 875.9°F76.5°F73.6°F84.7°F
September 974.7°F75.2°F73.2°F83.5°F
September 1074.1°F76.6°F72.7°F82.2°F
September 1173.6°F75.4°F72°F81.1°F
September 1275°F76.1°F70.9°F81.3°F
September 1374.5°F76.1°F71.1°F81°F
September 1474.3°F75.9°F71.6°F79.9°F
September 1574.7°F76.3°F71.4°F79.2°F
Day 2025 2024 Min Max
September 1674.3°F75.7°F71.8°F78.6°F
September 1774.1°F75.4°F71.4°F77.9°F
September 1874.5°F75°F70.5°F78.3°F
September 1972.7°F78.6°F69.8°F78.8°F
September 2073.9°F75.4°F69.8°F78.6°F
September 2173°F74.8°F69.6°F77.9°F
September 2273°F74.7°F70°F78.4°F
September 2373.4°F73.9°F69.8°F76.5°F
September 2473.6°F73°F69.3°F77°F
September 2574.8°F72.1°F68.2°F76.8°F
September 2673.9°F71.6°F67.5°F75.9°F
September 27 71.1°F67.3°F77.9°F
September 28 73.4°F66.9°F76.1°F
September 29 72.9°F67.8°F75.4°F
September 30 72°F67.5°F74.5°F
Dahlgren water temp chart in September

Average water temperature in Dahlgren in September over a decade

20152016201720182019
75.2°F76.3°F73.9°F78.6°F77.2°F
20202021202220232024
76.1°F77.9°F77.7°F77.2°F75.4°F

Dahlgren sea state in September

Chart comparing the height of waves in Dahlgren in September 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 Dahlgren in September

Dahlgren 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 September?

Want to know where the water temperature in September 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 September. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Virginia Beach75.6°F67.5°F83.3°F
Coltons Point75.7°F68.4°F86°F
Drum Point76.3°F69.3°F85.1°F
Solomons76.3°F69.4°F85.1°F
Port Republic76.1°F69.1°F85.1°F
Dares Beach75.9°F69.1°F85.1°F
Chesapeake Beach75.7°F68.7°F84.9°F
Calvert Beach76.3°F69.4°F85.5°F
North Beach75.7°F68.9°F85.5°F
Taylors Island76.1°F69.3°F85.3°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 Dahlgren 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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