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Water temperature in Brunswick (GA) in September

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Is it warm enough to swim in Brunswick in September? Average water temperature in Brunswick in September is 82°F and therefore suitable for comfortable swimming. The warmest sea in Brunswick in September is 85.8°F, and the coldest is 76.8°F. Average high air temperature in Brunswick in September is 86°F, and average low temperature is 70°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Brunswick

Changes water temperature in Brunswick in September 2025, 2024

To get an accurate forecast for the water temperature in Brunswick for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Brunswick, 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 181.7°F85.3°F81.5°F85.3°F
September 282.6°F85.8°F81.1°F85.8°F
September 380.2°F85.8°F80.2°F85.8°F
September 480.8°F85.5°F80.8°F85.5°F
September 581.5°F85.1°F81.1°F85.1°F
September 6 84.7°F81.3°F85.1°F
September 7 84.4°F81°F84.9°F
September 8 84°F81.3°F84.7°F
September 9 83.7°F81.5°F84.6°F
September 10 83.5°F81.1°F84.7°F
September 11 83.1°F80.4°F84.7°F
September 12 82.8°F79.7°F85.1°F
September 13 82°F79.3°F85.1°F
September 14 79.9°F79.2°F85.3°F
September 15 79.7°F79.5°F85.3°F
Day 2025 2024 Min Max
September 16 79.7°F79.5°F84.9°F
September 17 78.8°F78.8°F84.4°F
September 18 78.4°F78.4°F84.4°F
September 19 78.8°F78.8°F84.4°F
September 20 78.4°F78.4°F84°F
September 21 80.4°F79.7°F83.7°F
September 22 79.9°F79.3°F83.8°F
September 23 79.9°F79.3°F83.7°F
September 24 80.8°F78.8°F83.5°F
September 25 81.5°F77.4°F83.5°F
September 26 81.3°F76.8°F83.8°F
September 27 81.5°F76.8°F84.2°F
September 28 80.8°F76.8°F83.8°F
September 29 80.6°F77.2°F83.7°F
September 30 80.2°F77°F83.8°F
Brunswick water temp chart in September

Average water temperature in Brunswick in September over a decade

20152016201720182019
81.1°F82.2°F81.1°F84.2°F82.2°F
20202021202220232024
82.4°F81.9°F82.4°F81.5°F81.9°F

Brunswick sea state in September

Chart comparing the height of waves in Brunswick 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 Brunswick in September

Weather and climate in Brunswick in September

This data display average monthly climate indicators in Brunswick in September based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature86°F
  • Average LOW temperature70°F
  • Average rainfall days11 days
  • Average rainfall157mm/6.2''

Brunswick 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
Saint Simon Mills82°F76.5°F86.5°F
Driftwood Beach82.2°F76.3°F86°F
Sea Island82.2°F76.6°F86.9°F
Darien81.9°F76.8°F85.6°F
Jekyll Island82.2°F76.3°F85.8°F
Cumberland Island82.2°F75°F86.5°F
Amelia Island82.2°F75.7°F85.8°F
Fernandina Beach82.2°F75.7°F85.8°F
American Beach82.4°F76.3°F85.8°F
Franklintown82.4°F76.8°F85.8°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 Brunswick 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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