World sea water temperatures

Water temperature in Seal Harbor Beach in October

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Is it warm enough to swim in Seal Harbor Beach in October? Average water temperature in Seal Harbor Beach in October is 53.8°F and therefore is not suitable for comfortable swimming. The warmest sea in Seal Harbor Beach in October is 57.4°F, and the coldest is 49.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Seal Harbor Beach

Changes water temperature in Seal Harbor Beach in October 2025, 2024

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

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
October 156.3°F55.9°F52.3°F57.4°F
October 255.6°F55.4°F52.5°F56.7°F
October 355.8°F55.4°F52.7°F57°F
October 455.8°F55.6°F52.2°F57.4°F
October 556.1°F55.2°F52.7°F57°F
October 656.5°F54.7°F52.5°F57.2°F
October 756.3°F54.5°F52.5°F56.8°F
October 854.9°F55.6°F52°F56.7°F
October 955°F56.1°F51.4°F56.1°F
October 1054.5°F55.4°F51.3°F56.3°F
October 1154.5°F55.2°F50.7°F55.9°F
October 1252.3°F55°F50.9°F57.2°F
October 1352.9°F55°F50.9°F56.8°F
October 1453.2°F54.3°F50.7°F56.8°F
October 15 54.5°F50.2°F56.1°F
Day 2025 2024 Min Max
October 16 54.1°F50.2°F55.8°F
October 17 53.6°F50.5°F55.9°F
October 18 53.8°F50.5°F56.7°F
October 19 53.8°F50.4°F56.5°F
October 20 54°F50.5°F56.3°F
October 21 54°F50.9°F55.9°F
October 22 53.8°F50.9°F55.9°F
October 23 53.8°F50.5°F55.9°F
October 24 53.4°F49.5°F55.8°F
October 25 53.2°F50.2°F55.4°F
October 26 53.4°F50.4°F55.9°F
October 27 53.1°F49.6°F55.4°F
October 28 52.3°F49.1°F55°F
October 29 52.2°F49.8°F55°F
October 30 51.8°F49.5°F55°F
October 31 52°F49.5°F54.7°F
Seal Harbor Beach water temp chart in October

Average water temperature in Seal Harbor Beach in October over a decade

20152016201720182019
52.9°F54.3°F55°F54.1°F53.2°F
20202021202220232024
54°F55.9°F55°F55.2°F54.1°F

Seal Harbor Beach sea state in October

Chart comparing the height of waves in Seal Harbor Beach in October 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 Seal Harbor Beach in October

Seal Harbor Beach 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 October?

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

AvrMinMax
Southwest Harbor54°F49.1°F57.7°F
Islesford53.8°F49.1°F57.6°F
Sand Beach53.8°F49.1°F57.6°F
Seawall53.8°F49.1°F57.6°F
Union River Bay54.5°F49.3°F59.7°F
Sedgwick54.7°F49.5°F60.3°F
Marshall Island54.1°F49.3°F58.5°F
Surry54.9°F49.5°F60.3°F
Stonington54.7°F49.5°F60.1°F
Milbridge53.6°F49.1°F57.7°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 Seal Harbor Beach 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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