Ketchikan weather in August 2019

17
17°C max day temperature
5
5 hours of sunshine per day
15
15 days with some rainfall
9
9°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
222
222 mm of monthly rainfall
5
5 (Moderate) UV index
14
14°C sea temperature

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The August weather guide for Ketchikan, Alaska 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.

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

Guide to Ketchikan weather in August

The average maximum daytime temperature in Ketchikan in August is a comfortable 17°C (63°F). The average night-time temperature is usually a cool 9°C (48°F). There are usually 5 hours of bright sunshine each day, which represents 32% of the 15 hours of daylight.

Expect 222mm (8.7 inches) of rainfall across the whole of August with 15 days with some rain falling. Maximum UV levels will be moderate (5 UV index) at midday when the skies are clear.

The average sea temperature in and around Ketchikan in August is 14°C (57°F).