Ketchikan
August
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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19
Dry days
12
Rainy days
0
Snow days
17°/11°
Temperatures
11 km/h
Avg max wind
78 %
Avg humidity
Ketchikan in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  17° | 2 19° | 3  19° | ||||
| 4 21° | 5 21° | 6 22° | 7 22° | 8 21° | 9  20° | 10  16° |
| 11 18° | 12  16° | 13 17° | 14 17° | 15 18° | 16 19° | 17 19° |
| 18 22° | 19 15° | 20 13° | 21 17° | 22  17° | 23 13° | 24 16° |
| 25  12° | 26 14° | 27 15° | 28 12° | 29 14° | 30 12° | 31 15° |
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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 | 17° /10° | 0 mm | 5 | |
| Aug. 2 | Sunny | 19° /10° | 0 mm | 5 | |
| Aug. 3 | Overcast | 19° /10° | 0 mm | 4 | |
| Aug. 4 | Sunny | 21° /11° | 0 mm | 6 | |
| Aug. 5 | Sunny | 21° /14° | 0 mm | 6 | |
| Aug. 6 | Sunny | 22° /14° | 0 mm | 6 | |
| Aug. 7 | Sunny | 22° /13° | 0 mm | 6 | |
| Aug. 8 | Sunny | 21° /13° | 0 mm | 6 | |
| Aug. 9 | Partly cloudy | 20° /13° | 0 mm | 6 | |
| Aug. 10 | Light drizzle | 16° /14° | 2.1 mm | 4 | |
| Aug. 11 | Overcast | 18° /12° | 0 mm | 4 | |
| Aug. 12 | Patchy rain possible | 16° /13° | 0.2 mm | 4 | |
| Aug. 13 | Patchy rain possible | 17° /11° | 0.3 mm | 4 | |
| Aug. 14 | Sunny | 17° /9° | 0 mm | 5 | |
| Aug. 15 | Sunny | 18° /10° | 0 mm | 5 | |
| Aug. 16 | Sunny | 19° /11° | 0 mm | 5 | |
| Aug. 17 | Partly cloudy | 19° /11° | 0 mm | 5 | |
| Aug. 18 | Sunny | 22° /13° | 0 mm | 6 | |
| Aug. 19 | Light rain shower | 15° /13° | 6.6 mm | 4 | |
| Aug. 20 | Light rain shower | 13° /10° | 4.4 mm | 3 | |
| Aug. 21 | Sunny | 17° /9° | 0.1 mm | 5 | |
| Aug. 22 | Cloudy | 17° /11° | 1 mm | 4 | |
| Aug. 23 | Light drizzle | 13° /11° | 2.9 mm | 3 | |
| Aug. 24 | Patchy rain possible | 16° /12° | 1.6 mm | 4 | |
| Aug. 25 | Moderate rain | 12° /11° | 89.6 mm | 3 | |
| Aug. 26 | Patchy light drizzle | 14° /9° | 7.9 mm | 3 | |
| Aug. 27 | Partly cloudy | 15° /8° | 0 mm | 5 | |
| Aug. 28 | Moderate rain | 12° /11° | 9.5 mm | 3 | |
| Aug. 29 | Patchy rain possible | 14° /10° | 2 mm | 3 | |
| Aug. 30 | Light rain shower | 12° /10° | 21.9 mm | 3 | |
| Aug. 31 | 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.
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