Ketchikan weather in September 2025

Expect 14°C daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Ketchikan in September. Check more long-term weather averages for Ketchikan in September before you book your next holiday to Alaska in 2025/2026.

  • 14°C maximum daytime temperature in September in Ketchikan14
    14°C max day temperature
  • 3 hours of sunshine per day
  • 18 days with some rainfall in September in Ketchikan18
    18 days with some rainfall
  • 7°C minimum night-time temperature in September in Ketchikan7
    7°C min night temperature
  • 13 hours of daylight per day in September in Ketchikan13
    13 hours of daylight per day
  • No heat & humidity in September in Ketchikan0
    No heat & humidity
  • 279 mm monthly rainfall in September in Ketchikan279
    279 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Ketchikan3
    3 (Moderate) UV index
  • 12°C sea temperature in September in Ketchikan12
    12°C sea temperature

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The September weather guide for Alaska (Ketchikan) 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 Ketchikan in September?

Daytime temperatures usually reach 14°C in Ketchikan in September, falling to 7°C at night.

How sunny is it in Ketchikan in September?

There are normally 3 hours of bright sunshine each day in Ketchikan in September - that's 27% of daylight hours.

How warm is the sea around Ketchikan in September?

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

Does it rain in Ketchikan in September?

There are usually 18 days with some rain in Ketchikan in September and the average monthly rainfall is 279mm.

Ketchikan September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 04:53 18:38
Monday, 15th September 2025 05:20 18:02
Tuesday, 30th September 2025 05:48 17:23

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