Alaska (Ketchikan)
August
Weather in Alaska for August 2026
Your guide to Alaska weather in August - trends and predictions
Until now, August 2026 in Alaska has been nearly identical to the historical average, with a temperature of 17.1 °F (showing only a slight deviation of 0.2 °F).
The forecast for the next days in Alaska predicts temperatures to be around 18 °F, close to the historical average.
In general, the average temperature in Alaska at the beginning of August is 17.4 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 16.3 °F by the end of August.
Alaska experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 314.4 mm.
Temperatures
Rain 🌧️
10
Dry days
21
Rainy days
0
Snow days
16°/12°
Temperatures
11 km/h
Avg max wind
83 %
Avg humidity
Alaska Weather August
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What’s the Weather Like in Alaska This August?
Discover the average temperatures and weather trends across Alaska’s cities this August.
Temperatures trend during August in Alaska
See the weather trend as well as the moving average line
August weather in Alaska day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. |  Sunny | 15° /10° | 5.8 mm | 3 | |
| 2 Aug. | Sunny | 17° /11° | 0.1 mm | 4 | |
| 3 Aug. |  Overcast | 17° /10° | 11.7 mm | 5 | |
| 4 Aug. | Sunny | 18° /11° | 3.7 mm | 6 | |
| 5 Aug. | Sunny | 18° /12° | 31.4 mm | 5 | |
| 6 Aug. | Sunny | 19° /12° | 0 mm | 6 | |
| 7 Aug. | Sunny | 18° /11° | 0 mm | 4 | |
| 8 Aug. | Sunny | 17° /12° | 10.3 mm | 5 | |
| 9 Aug. |  Partly cloudy | 18° /12° | 16.6 mm | 5 | |
| 10 Aug. | Overcast | 16° /13° | 0.7 mm | 4 | |
| 11 Aug. | Overcast | 18° /12° | 14.6 mm | 4 | |
| 12 Aug. | Sunny | 20° /12° | 0.1 mm | 5.5 | |
| 13 Aug. | Sunny | 22° /13° | 0 mm | 5.1 | |
| 14 Aug. | Sunny | 22° /15° | 0.2 mm | 4.7 | |
| 15 Aug. | Sunny | 21° /14° | 0.2 mm | 5 | |
| 16 Aug. | Sunny | 19° /13° | 0 mm | 5 | |
| 17 Aug. | Sunny | 19° /12° | 0 mm | 5 | |
| 18 Aug. |  Light drizzle | 14° /12° | 3 mm | 3 | |
| 19 Aug. |  Patchy rain possible | 17° /13° | 0.1 mm | 5 | |
| 20 Aug. | Patchy rain possible | 17° /13° | 0.1 mm | 4 | |
| 21 Aug. | Partly cloudy | 18° /12° | 12.4 mm | 5 | |
| 22 Aug. | Sunny | 18° /11° | 5.1 mm | 5 | |
| 23 Aug. | Sunny | 19° /10° | 0 mm | 5 | |
| 24 Aug. | Partly cloudy | 15° /11° | 1.5 mm | 4 | |
| 25 Aug. | Sunny | 16° /10° | 0.8 mm | 5 | |
| 26 Aug. | Patchy light drizzle | 17° /11° | 3.9 mm | 4 | |
| 27 Aug. | Partly cloudy | 18° /10° | 0 mm | 6 | |
| 28 Aug. |  Moderate rain | 16° /12° | 4.7 mm | 5 | |
| 29 Aug. | Patchy rain possible | 18° /12° | 1 mm | 5 | |
| 30 Aug. | Light rain shower | 14° /11° | 10.9 mm | 4 | |
| 31 Aug. | Light rain | 15° /12° | 11.2 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Alaska 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 Alaska forecast closer to your planned date for the most up-to-date weather information.
Change Month
Alaska in August - FAQ
What are the expected maximum and minimum temperatures in Alaska during August?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Alaska during August?
Significant rainfall exceeding 314.4 mm is expected in Alaska during August, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Alaska during August?
The average wind speed in Alaska during August is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Alaska
Explore the daily rainfall trends and prepare for Alaskas August weather 💧
Typically, Alaska has 21 rainy days in August with a total of 314.4 mm of rainfall.
UV exposure in Alaska during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
Counties in Alaska
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Top locations in Alaska
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AnchorageDenali National ParkFairbanksGlacier Bay National Park and PreserveJuneauKetchikanSewardSitkaSkagwayWhittier
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