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Weather in Ketchikan for August 2025

Your guide to Ketchikan weather in August - trends and predictions
  • In general, the average temperature in Ketchikan at the beginning of August is 20.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13.4 °F by the end of August.

  • The climate of Ketchikan in August is notably wet, with an average of 12 rainy days.

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Average dry days
19
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/11°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Ketchikan in August average weather

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Temperatures trend during August in Ketchikan

See the weather trend as well as the moving average line

August weather day by day

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Date Weather Temperatures Rain UV More
Aug. 1 Sunny
Sunny
17° /10° 0 mm 5
Aug. 2 Sunny
Sunny
19° /10° 0 mm 5
Aug. 3 Overcast
Overcast
19° /10° 0 mm 4
Aug. 4 Sunny
Sunny
21° /11° 0 mm 6
Aug. 5 Sunny
Sunny
21° /14° 0 mm 6
Aug. 6 Sunny
Sunny
22° /14° 0 mm 6
Aug. 7 Sunny
Sunny
22° /13° 0 mm 6
Aug. 8 Sunny
Sunny
21° /13° 0 mm 6
Aug. 9 Partly cloudy
Partly cloudy
20° /13° 0 mm 6
Aug. 10 Light drizzle
Light drizzle
16° /14° 2.1 mm 4
Aug. 11 Overcast
Overcast
18° /12° 0 mm 4
Aug. 12 Patchy rain possible
Patchy rain possible
16° /13° 0.2 mm 4
Aug. 13 Patchy rain possible
Patchy rain possible
17° /11° 0.3 mm 4
Aug. 14 Sunny
Sunny
17° /9° 0 mm 5
Aug. 15 Sunny
Sunny
18° /10° 0 mm 5
Aug. 16 Sunny
Sunny
19° /11° 0 mm 5
Aug. 17 Partly cloudy
Partly cloudy
19° /11° 0 mm 5
Aug. 18 Sunny
Sunny
22° /13° 0 mm 6
Aug. 19 Light rain shower
Light rain shower
15° /13° 6.6 mm 4
Aug. 20 Light rain shower
Light rain shower
13° /10° 4.4 mm 3
Aug. 21 Sunny
Sunny
17° /9° 0.1 mm 5
Aug. 22 Cloudy
Cloudy
17° /11° 1 mm 4
Aug. 23 Light drizzle
Light drizzle
13° /11° 2.9 mm 3
Aug. 24 Patchy rain possible
Patchy rain possible
16° /12° 1.6 mm 4
Aug. 25 Moderate rain
Moderate rain
12° /11° 89.6 mm 3
Aug. 26 Patchy light drizzle
Patchy light drizzle
14° /9° 7.9 mm 3
Aug. 27 Partly cloudy
Partly cloudy
15° /8° 0 mm 5
Aug. 28 Moderate rain
Moderate rain
12° /11° 9.5 mm 3
Aug. 29 Patchy rain possible
Patchy rain possible
14° /10° 2 mm 3
Aug. 30 Light rain shower
Light rain shower
12° /10° 21.9 mm 3
Aug. 31 Light rain
Light rain
15° /13° 22.3 mm 4
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Important Notice
Our weather forecast for Ketchikan in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Ketchikan forecast closer to your planned date for the most up-to-date weather information.

Ketchikan in August - FAQ

What are the expected maximum and minimum temperatures in Ketchikan during August?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Ketchikan during August?
Significant rainfall exceeding 172.4 mm is expected in Ketchikan during August, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Ketchikan during August?
The average wind speed in Ketchikan during August is 11 km/h, suggesting breezy to windy conditions, depending on your activities.

August rainfall patterns in Ketchikan

Explore the daily rainfall trends and prepare for Ketchikans August weather 💧

UV exposure in Ketchikan during August

Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️

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Location coordinates Where is Ketchikan?

Get accurate weather forecasts for Ketchikan, located at latitude 55.342 and longitude -131.648. Stay updated with localized weather information tailored for Ketchikan.

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