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Water temperature in Glacier Bay (AK) in September

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Is it warm enough to swim in Glacier Bay in September? Average water temperature in Glacier Bay in September is 50°F and therefore is not suitable for comfortable swimming. The warmest sea in Glacier Bay in September is 55.4°F, and the coldest is 45.3°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Glacier Bay

Changes water temperature in Glacier Bay in September 2025, 2024

To get an accurate forecast for the water temperature in Glacier Bay for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Glacier Bay, 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 150.5°F50.2°F50.2°F55.4°F
September 250.9°F50°F47.8°F54.9°F
September 350.9°F50°F47.8°F54.7°F
September 451.6°F49.6°F47.8°F54°F
September 5 49.5°F48°F53.6°F
September 6 49.3°F47.7°F52.9°F
September 7 48.4°F47.7°F52.9°F
September 8 48.6°F48.2°F52.7°F
September 9 48.4°F48.4°F52.7°F
September 10 48.7°F48.4°F52.3°F
September 11 47.3°F46.9°F52.2°F
September 12 47.7°F47.3°F52°F
September 13 48°F47.7°F52°F
September 14 48.2°F48°F52.2°F
September 15 48.6°F48.4°F52.3°F
Day 2025 2024 Min Max
September 16 50°F47.8°F52.2°F
September 17 47.3°F46.9°F52.7°F
September 18 47.8°F47.7°F52.3°F
September 19 47.8°F47.7°F52.5°F
September 20 46.2°F46.2°F52.2°F
September 21 46.6°F46.6°F52°F
September 22 46.8°F46.8°F51.8°F
September 23 47.5°F47.5°F51.4°F
September 24 47.7°F46.8°F51.4°F
September 25 48.4°F46.8°F51.4°F
September 26 48.6°F46.9°F51.3°F
September 27 48.6°F46.8°F51.1°F
September 28 48.6°F45.3°F50.7°F
September 29 47.1°F46°F50.9°F
September 30 47.1°F46.4°F50.5°F
Glacier Bay water temp chart in September

Average water temperature in Glacier Bay in September over a decade

20152016201720182019
49.3°F52°F51.8°F50°F50°F
20202021202220232024
50.7°F50.5°F49.6°F49.3°F48.2°F

Glacier Bay sea state in September

Chart comparing the height of waves in Glacier Bay 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 Glacier Bay in September

Glacier Bay 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
Skagway50.9°F47.1°F56.5°F
Yakutat54.3°F50.4°F58.1°F
Cordova52.9°F49.1°F57.4°F
Haida Gwaii57.4°F53.1°F61.7°F
Seward53.1°F48.7°F57.4°F
Anchorage53.8°F47.8°F59.7°F
Kenai53.1°F49.3°F57.7°F
Anchor Point50.9°F48.2°F54.7°F
Kodiak50.4°F46.8°F55.8°F
Port Hardy51.8°F47.7°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 Glacier Bay 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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