Anchorage Weather in August
United States · Subarctic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
August in Anchorage sees average temperatures ranging from a low of 10.7°C (51.3°F) to a high of 17.6°C (63.7°F), with a mean of 14.0°C (57.2°F). Compared to the annual average of 2.5°C (36.5°F), this month is 11.5°C warmer than the yearly norm. Precipitation averages 145.5mm, making it approximately 73.0mm wetter than the monthly average of 72.0mm. This is the wettest month of the year, with 145.5mm of precipitation and around 20.6 rainy days. The city receives an average of 8.3 hours of sunshine per day during August, with relative humidity averaging 80.4%. Wind speeds reach an average maximum of 13.3 km/h. For travelers, this month offers a temperature experience in Anchorage, with wetter-than-average conditions compared to the rest of the year.
Anchorage's subarctic climate creates long, cold winters and short, mild summers. I've tracked the daylight data and found that the city receives over 19 hours of daylight in June and barely 6 hours in December. The best time for visiting is June to August, when the temperatures are mild and the natural attractions are accessible.
August vs Adjacent Months
| Metric | July | August | September |
|---|---|---|---|
| Mean Temp | 15.3°C (59.5°F) | 14.0°C (57.2°F) | 9.0°C (48.2°F) |
| Rainfall | 103.8mm | 145.5mm | 128.1mm |
| Sunshine | 10.0 hrs | 8.3 hrs | 6.5 hrs |
| Humidity | 74.4% | 80.4% | 82.9% |
| Wind | 12.8 km/h | 13.3 km/h | 13.0 km/h |
| Rainy Days | 17.4 | 20.6 | 22.2 |
| Snowfall | 0.0 cm | 0.0 cm | 0.8 cm |
Seasonal Context
August falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting Anchorage in August, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Anchorage in August?
The average temperature in Anchorage during August ranges from 10.7°C (51.3°F) to 17.6°C (63.7°F), with a mean of 14.0°C (57.2°F).
How much does it rain in Anchorage in August?
Anchorage receives an average of 145.5mm of precipitation in August, spread across approximately 20.6 rainy days. This is the wettest month of the year.
What should I pack for Anchorage in August?
Based on August weather data, pack warm layers, a medium jacket, and waterproof outerwear. Rain gear is essential — this month averages 145.5mm of precipitation.
Is August a good time to visit Anchorage?
August is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Anchorage
Cities with Similar August Climate (Subarctic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 61.22°, -149.9°. Timezone: America/Anchorage. Last updated: 2026-07-30.