Anchorage weather in September 2025

Expect 13°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Anchorage in September based on long-term weather averages. There is usually 14 days with some rainfall and 68 mm of average monthly rainfall in September.

  • 13°C maximum daytime temperature in September in Anchorage13
    13°C max day temperature
  • 5 hours of sunshine per day
  • 14 days with some rainfall in September in Anchorage14
    14 days with some rainfall
  • 5°C minimum night-time temperature in September in Anchorage5
    5°C min night temperature
  • 13 hours of daylight per day in September in Anchorage13
    13 hours of daylight per day
  • No heat & humidity in September in Anchorage0
    No heat & humidity
  • 68 mm monthly rainfall in September in Anchorage68
    68 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in September in Anchorage2
    2 (Low) UV index
  • 12°C sea temperature in September in Anchorage12
    12°C sea temperature

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The September weather guide for Alaska (Anchorage) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about the USA

How warm is it in Anchorage in September?

Daytime temperatures usually reach 13°C in Anchorage in September, falling to 5°C at night.

How sunny is it in Anchorage in September?

There are normally 5 hours of bright sunshine each day in Anchorage in September - that's 41% of daylight hours.

How warm is the sea around Anchorage in September?

The average sea temperature around Anchorage in September is 12°C.

Does it rain in Anchorage in September?

There are usually 14 days with some rain in Anchorage in September and the average monthly rainfall is 68mm.

Anchorage September sunrise & sunset times

Browse the sunrise and sunset times for Anchorage in September 2025. Select a month to view Anchorage sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:53 20:04
Monday, 15th September 2025 06:28 19:20
Tuesday, 30th September 2025 07:05 18:32

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