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Water temperature in Chesapeake Bay (VA) in September

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Is it warm enough to swim in Chesapeake Bay in September? Average water temperature in Chesapeake Bay in September is 76.5°F and therefore suitable for comfortable swimming. The warmest sea in Chesapeake Bay in September is 85.1°F, and the coldest is 68.4°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Chesapeake Bay

Changes water temperature in Chesapeake Bay in September 2025, 2024

To get an accurate forecast for the water temperature in Chesapeake Bay for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Chesapeake Bay, 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 175.6°F80.2°F75.6°F84.4°F
September 275.6°F79.3°F75.4°F83.3°F
September 375.4°F77.7°F75.4°F83.5°F
September 475.6°F76.1°F75.4°F84.4°F
September 576.3°F75.7°F75.7°F84.7°F
September 676.5°F74.8°F74.8°F85.1°F
September 776.6°F75.6°F75.4°F84.6°F
September 875.2°F74.8°F74.5°F83.7°F
September 975.2°F74.3°F74.3°F81.5°F
September 1074.5°F74.8°F73.8°F81°F
September 1173°F74.7°F73°F82°F
September 1273.4°F74.8°F71.2°F81.9°F
September 1373.2°F74.8°F72.7°F81.1°F
September 1473.4°F74.7°F73.2°F80.4°F
September 1573.4°F74.5°F73°F79.9°F
Day 2025 2024 Min Max
September 1672.9°F74.1°F72.9°F79.9°F
September 1772.3°F74.3°F72.3°F79.5°F
September 1871.4°F74.1°F71.4°F79.2°F
September 1972°F74.7°F71.8°F79.3°F
September 2072.5°F75°F71.8°F78.8°F
September 2172.5°F74.7°F71.4°F79.3°F
September 2272.1°F74.7°F70.9°F78.4°F
September 2373.2°F74.1°F70.3°F78.1°F
September 2473.4°F73.8°F70.2°F76.8°F
September 2575°F73.4°F70°F77.5°F
September 26 73.6°F68.4°F77.5°F
September 27 73.4°F69.3°F76.8°F
September 28 75.4°F69.4°F76.6°F
September 29 75°F70.7°F76.5°F
September 30 74.8°F70.2°F76.6°F
Chesapeake Bay water temp chart in September

Average water temperature in Chesapeake Bay in September over a decade

20152016201720182019
77.4°F77.5°F75°F80.4°F77.2°F
20202021202220232024
76.1°F78.3°F77.9°F77.2°F75°F

Chesapeake Bay sea state in September

Chart comparing the height of waves in Chesapeake Bay 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 Chesapeake Bay in September

Chesapeake Bay 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
Deltaville76.6°F69.3°F85.3°F
Tangier Island76.3°F67.5°F85.1°F
Mobjack Bay76.5°F68.7°F85.3°F
Cape Charles75.9°F65.5°F83.8°F
Oyster75.6°F67.5°F83.8°F
Broadwater74.8°F68.2°F82.9°F
Acree Acres76.5°F68.7°F85.3°F
Gloucester Point76.5°F69.1°F86°F
Yorktown76.5°F69.1°F86°F

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Our report for Chesapeake Bay 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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