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 1553.8°F54.5°F50.2°F56.1°F
Day 2025 2024 Min Max
October 1653.2°F54.1°F50.2°F55.8°F
October 1753.6°F53.6°F50.5°F55.9°F
October 1853.1°F53.8°F50.5°F56.7°F
October 1952.9°F53.8°F50.4°F56.5°F
October 2052.9°F54°F50.5°F56.3°F
October 2153.4°F54°F50.9°F55.9°F
October 2253.8°F53.8°F50.9°F55.9°F
October 2353.6°F53.8°F50.5°F55.9°F
October 2453.2°F53.4°F49.5°F55.8°F
October 2553.1°F53.2°F50.2°F55.4°F
October 2652.9°F53.4°F50.4°F55.9°F
October 2752.9°F53.1°F49.6°F55.4°F
October 2852.7°F52.3°F49.1°F55°F
October 2952.9°F52.2°F49.8°F55°F
October 3052.9°F51.8°F49.5°F55°F
October 3152.7°F52°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

20162017201820192020
54.3°F55°F54.1°F53.2°F54°F
20212022202320242025
55.9°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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