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Water temperature in Dutch Harbor (AK) in September

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Is it warm enough to swim in Dutch Harbor in September? Average water temperature in Dutch Harbor in September is 47.5°F and therefore is not suitable for comfortable swimming. The warmest sea in Dutch Harbor in September is 53.4°F, and the coldest is 44.4°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Dutch Harbor

Changes water temperature in Dutch Harbor in September 2025, 2024

To get an accurate forecast for the water temperature in Dutch Harbor for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Dutch Harbor, 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 150.2°F47.7°F45.9°F53.4°F
September 250°F47.8°F45.7°F53.4°F
September 349.5°F48°F45.3°F52.9°F
September 448.4°F47.1°F45.7°F52°F
September 548.6°F47.1°F45.9°F51.6°F
September 6 46.6°F46°F51.8°F
September 7 46°F46°F51.8°F
September 8 46.4°F46.2°F52°F
September 9 46.2°F45.7°F51.8°F
September 10 46.2°F45°F51.4°F
September 11 46.8°F45°F51.3°F
September 12 46.8°F44.8°F50.9°F
September 13 46.9°F45°F50.4°F
September 14 46.8°F45.1°F50°F
September 15 46.4°F45.3°F50°F
Day 2025 2024 Min Max
September 16 46°F45.5°F50°F
September 17 46.2°F46°F49.6°F
September 18 45°F45°F49.5°F
September 19 45°F45°F49.5°F
September 20 45.1°F45.1°F49.3°F
September 21 45.3°F45.3°F48.9°F
September 22 44.8°F44.8°F48.7°F
September 23 45.1°F44.8°F48.6°F
September 24 45°F45°F48.7°F
September 25 45.3°F45°F48.9°F
September 26 45°F44.8°F48.6°F
September 27 45°F44.8°F48.6°F
September 28 45°F44.4°F48.7°F
September 29 44.8°F44.4°F48.6°F
September 30 44.8°F44.4°F48.6°F
Dutch Harbor water temp chart in September

Average water temperature in Dutch Harbor in September over a decade

20152016201720182019
48.6°F50.2°F47.5°F47.8°F49.1°F
20202021202220232024
47.3°F47.8°F46.8°F47.1°F46°F

Dutch Harbor sea state in September

Chart comparing the height of waves in Dutch Harbor 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 Dutch Harbor in September

Dutch Harbor 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
Unalaska47.5°F44.4°F53.4°F
Sand Point51.4°F47.5°F57.4°F
St. Paul47.1°F41.4°F52.3°F
Bristol Bay53.1°F47.1°F60.3°F
Togiak52.3°F45.1°F61.3°F
Kipnuk51.3°F42.1°F61.9°F
Dillingham52.5°F45°F61.3°F
Kodiak50.4°F46.8°F55.8°F
Anchor Point50.9°F48.2°F54.7°F
Homer51.1°F48.2°F55.8°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 Dutch Harbor 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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