Ketchikan weather in August 2025

Expect 17°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Ketchikan in August. Check more long-term weather averages for Ketchikan in August before you book your next holiday to Alaska in 2025/2026.

  • 17°C maximum daytime temperature in August in Ketchikan17
    17°C max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in August in Ketchikan15
    15 days with some rainfall
  • 9°C minimum night-time temperature in August in Ketchikan9
    9°C min night temperature
  • 15 hours of daylight per day in August in Ketchikan15
    15 hours of daylight per day
  • No heat & humidity in August in Ketchikan0
    No heat & humidity
  • 222 mm monthly rainfall in August in Ketchikan222
    222 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Ketchikan5
    5 (Moderate) UV index
  • 14°C sea temperature in August in Ketchikan14
    14°C sea temperature

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The August 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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How warm is it in Ketchikan in August?

Daytime temperatures usually reach 17°C in Ketchikan in August, falling to 9°C at night.

How sunny is it in Ketchikan in August?

There are normally 5 hours of bright sunshine each day in Ketchikan in August - that's 32% of daylight hours.

How warm is the sea around Ketchikan in August?

The average sea temperature around Ketchikan in August is 14°C.

Does it rain in Ketchikan in August?

There are usually 15 days with some rain in Ketchikan in August and the average monthly rainfall is 222mm.

Ketchikan August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 03:55 19:50
Saturday, 16th August 2025 04:23 19:17
Sunday, 31st August 2025 04:51 18:41

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