World sea water temperatures

Water temperature in Seawall in September

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Is it warm enough to swim in Seawall in September? Average water temperature in Seawall in September is 56.1°F and therefore is not suitable for comfortable swimming. The warmest sea in Seawall in September is 61.9°F, and the coldest is 52.9°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Seawall

Changes water temperature in Seawall in September 2025, 2024

To get an accurate forecast for the water temperature in Seawall for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Seawall, 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 157.4°F57.7°F54.1°F61.9°F
September 259.4°F58.1°F54°F60.8°F
September 359.4°F57.7°F52.9°F60.8°F
September 460.3°F57.6°F53.2°F60.3°F
September 558.6°F57.6°F53.6°F58.8°F
September 6 57°F53.8°F59.4°F
September 7 57°F54.3°F59.2°F
September 8 57°F54.3°F59.2°F
September 9 56.7°F54.3°F58.5°F
September 10 56.3°F54.5°F60.6°F
September 11 56.5°F54.5°F59°F
September 12 57°F53.8°F58.6°F
September 13 57°F55°F57.9°F
September 14 57.4°F54.1°F59.4°F
September 15 57°F54°F58.8°F
Day 2025 2024 Min Max
September 16 57.2°F53.4°F58.1°F
September 17 56.3°F53.1°F58.1°F
September 18 56.7°F54.1°F59°F
September 19 56.7°F53.8°F57.7°F
September 20 56.5°F55.2°F57°F
September 21 56.3°F54.5°F57.6°F
September 22 55.6°F54.5°F56.3°F
September 23 55.2°F53.6°F57°F
September 24 55°F53.6°F57.4°F
September 25 55.8°F53.4°F57.4°F
September 26 55.2°F53.4°F57°F
September 27 56.7°F53.2°F58.1°F
September 28 55.4°F53.2°F57.9°F
September 29 55.2°F53.8°F56.3°F
September 30 56.5°F53.4°F57°F
Seawall water temp chart in September

Average water temperature in Seawall in September over a decade

20152016201720182019
55.9°F56.8°F55.2°F57.2°F55.6°F
20202021202220232024
55.8°F57.7°F57.6°F57°F56.7°F

Seawall 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

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  • Blackwater bay Bullred I10 bridge
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  • Blackwater Bay some older structures probably boat docks

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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 Seawall 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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