Anchorage weather in August
August in Anchorage: nice, rainy, with clean air — an excellent time to visit.
#3 of 12 months in Anchorage · #208 of 604 destinations to visit in August · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Anchorage climate normals — August
| Daytime high | 18°C / 64°F | 😎 nice |
|---|---|---|
| Nighttime low | 12°C / 54°F | |
| Feels like (high) | 18°C / 64°F | |
| Rainfall | 143 mm / 5.6 in | 🌧 rainy |
| Rainy days | 18 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 12°C / 53°F | |
| Sunshine | 9.8 h/day | |
| Daylight | 15.8 h | |
| Wind | 9 km/h / 6 mph | |
| Air quality (US AQI) | 22 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Anchorage?
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Anchorage in August — FAQ
- Is August a good time to visit Anchorage?
- August in Anchorage: nice, rainy, with clean air — an excellent time to visit. It ranks #3 of 12 months for Anchorage on SeasonMap's comfort score (84/100).
- What is the weather like in Anchorage in August?
- In August, Anchorage averages a daily high of 17.8°C and a low of 12.1°C, with about 143.2 mm of rain over roughly 18.4 rainy days.
- What is the air quality in Anchorage in August?
- Anchorage has a mean US Air Quality Index of about 22 in August.