World sea water temperatures

Water temperature in South Thomaston (ME) in September

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Is it warm enough to swim in South Thomaston in September? Average water temperature in South Thomaston in September is 58.5°F and therefore is not suitable for comfortable swimming. The warmest sea in South Thomaston in September is 65.1°F, and the coldest is 54.7°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in South Thomaston

Changes water temperature in South Thomaston in September 2025, 2024

To get an accurate forecast for the water temperature in South Thomaston for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in South Thomaston, 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 158.8°F61°F57.2°F63.3°F
September 261.5°F59.4°F57.4°F62.8°F
September 361.5°F58.1°F56.7°F62.8°F
September 461.3°F58.6°F56.3°F61.7°F
September 561.2°F59.2°F56.3°F62.2°F
September 661.3°F58.6°F56.7°F62.2°F
September 761.2°F59°F56.7°F65.1°F
September 858.3°F58.5°F56.5°F64.9°F
September 957.9°F57.9°F56.3°F64.2°F
September 1057.7°F57.4°F56.5°F63.3°F
September 1157.6°F57.7°F56.5°F63.7°F
September 1258.6°F57.9°F56.7°F62.8°F
September 1358.5°F58.5°F56.7°F63°F
September 1458.8°F58.8°F56.5°F63.3°F
September 1559.2°F58.5°F56.1°F61.9°F
Day 2025 2024 Min Max
September 1658.5°F59°F56.1°F61.7°F
September 1758.5°F58.5°F55.9°F61.3°F
September 1861°F57.2°F55.4°F61.9°F
September 1959.5°F57.4°F54.7°F61°F
September 2058.6°F57.4°F55.2°F60.3°F
September 2158.1°F57.7°F55.9°F60.6°F
September 2258.5°F57.9°F55.8°F60.6°F
September 2358.6°F56.8°F55.6°F60.4°F
September 2458.5°F58.3°F55.2°F60.3°F
September 25 57.4°F55.2°F60.4°F
September 26 57.6°F55.2°F61.3°F
September 27 58.6°F55.2°F61.2°F
September 28 57°F55.4°F60.4°F
September 29 58.3°F55.6°F60.1°F
September 30 58.1°F55.8°F59.7°F
South Thomaston water temp chart in September

Average water temperature in South Thomaston in September over a decade

20152016201720182019
59°F59.4°F57.4°F59.7°F57.4°F
20202021202220232024
57.4°F60.1°F59.4°F60.3°F58.3°F

South Thomaston sea state in September

Chart comparing the height of waves in South Thomaston 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 South Thomaston in September

South Thomaston 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
Thomaston58.8°F54.9°F66.2°F
Waldoboro59.2°F55.2°F66.6°F
Bremen59.4°F55.2°F66.9°F
Camden59.2°F54.9°F65.7°F
Vinalhaven57.9°F54.1°F63.1°F
Penobscot Bay58.5°F54.5°F63.1°F
Bristol59.4°F55°F66.2°F
Lincolnville59.2°F54.9°F65.8°F
Monhegan59°F54.9°F65.7°F
Pemaquid Beach59.5°F55.2°F66.6°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 South Thomaston 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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