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Water temperature in Fairbanks (AK) in September

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Is it warm enough to swim in Fairbanks in September? Average water temperature in Fairbanks in September is 48.2°F and therefore is not suitable for comfortable swimming. The warmest water in Fairbanks in September is 59°F, and the coldest is 37.4°F. Average high air temperature in Fairbanks in September is 55°F, and average low temperature is 35°F. To find out the water temperature today and in the coming days, go to Current water temperature in Fairbanks

Changes water temperature in Fairbanks in September 2025, 2024

To get an accurate forecast for the water temperature in Fairbanks for any chosen month, compare two years within a 10 year range using the chart below.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024
September 153.6°F51.8°F
September 253.6°F51.8°F
September 351.8°F51.8°F
September 453.6°F51.8°F
September 553.6°F51.8°F
September 653.6°F51.8°F
September 753.6°F51.8°F
September 853.6°F51.8°F
September 953.6°F51.8°F
September 1051.8°F51.8°F
September 1150°F50°F
September 1248.2°F50°F
September 1346.4°F50°F
September 1446.4°F48.2°F
September 1546.4°F48.2°F
Day 2025 2024
September 16 48.2°F
September 17 46.4°F
September 18 46.4°F
September 19 44.6°F
September 20 42.8°F
September 21 42.8°F
September 22 42.8°F
September 23 42.8°F
September 24 41°F
September 25 42.8°F
September 26 41°F
September 27 41°F
September 28 41°F
September 29 39.2°F
September 30 39.2°F

Average water temperature in Fairbanks in September over a decade

20152016201720182019
49.5°F49.8°F47.8°F50.2°F
20202021202220232024
48.2°F46.8°F48.2°F46°F46.9°F

Weather and climate in Fairbanks in September

This data display average monthly climate indicators in Fairbanks in September based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature55°F
  • Average LOW temperature35°F
  • Average humidity
    69
  • Average rainfall days10 days
  • Average rainfall28mm/1.1''
  • Average daylight13h
  • Average sunshine4.1h
  • Average UV index2

Fairbanks 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

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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 Fairbanks 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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