August weather in Gustavus, AK
The average temperature in Gustavus in August is 54.3°F (46.0°F–62.5°F). Average precipitation: 5.69 inches.
August is a summer month in Gustavus, and is warmer than the annual average of 40.7°F. Daily temperatures swing about 16.5°F between overnight low and afternoon high. Daylight averages about 15h 8m. For travel, August is a wet month.
Avg High
62.5°F
Avg Low
46.0°F
Precipitation
5.69 in
Daylight
15h 8m
August records in Gustavus
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 70.9°F (2021) | 36.9°F (2014) | 0.39 in (2025) |
| August 2 | 72.5°F (2014) | 36.9°F (2024) | 0.78 in (2020) |
| August 3 | 76.6°F (2015) | 37.6°F (2024) | 0.52 in (2012) |
| August 4 | 79.0°F (2024) | 35.8°F (2024) | 0.35 in (2013) |
| August 5 | 83.3°F (2024) | 36.9°F (2024) | 0.86 in (2022) |
| August 6 | 76.3°F (2023) | 38.1°F (2025) | 0.91 in (2012) |
| August 7 | 79.0°F (2019) | 37.4°F (2024) | 0.95 in (2018) |
| August 8 | 78.4°F (2019) | 40.5°F (2024) | 1.46 in (2018) |
| August 9 | 76.1°F (2019) | 37.9°F (2019) | 1.04 in (2020) |
| August 10 | 76.1°F (2019) | 36.3°F (2019) | 0.90 in (2014) |
| August 11 | 73.9°F (2019) | 36.7°F (2013) | 0.99 in (2025) |
| August 12 | 73.8°F (2013) | 38.5°F (2013) | 1.89 in (2023) |
| August 13 | 69.8°F (2025) | 38.1°F (2013) | 1.41 in (2021) |
| August 14 | 71.6°F (2012) | 39.0°F (2024) | 1.06 in (2014) |
| August 15 | 68.5°F (2013) | 33.1°F (2024) | 0.73 in (2014) |
| August 16 | 67.6°F (2025) | 31.6°F (2024) | 0.50 in (2013) |
| August 17 | 68.2°F (2024) | 37.8°F (2018) | 1.46 in (2014) |
| August 18 | 72.0°F (2024) | 36.3°F (2018) | 1.53 in (2015) |
| August 19 | 67.6°F (2018) | 31.3°F (2019) | 0.31 in (2015) |
| August 20 | 70.2°F (2014) | 27.9°F (2019) | 0.67 in (2017) |
| August 21 | 74.8°F (2022) | 27.7°F (2019) | 0.45 in (2020) |
| August 22 | 69.3°F (2021) | 30.4°F (2021) | 1.04 in (2017) |
| August 23 | 72.7°F (2025) | 31.1°F (2021) | 0.37 in (2019) |
| August 24 | 68.5°F (2022) | 37.9°F (2024) | 0.45 in (2013) |
| August 25 | 68.9°F (2015) | 34.2°F (2015) | 1.14 in (2024) |
| August 26 | 68.2°F (2025) | 34.2°F (2015) | 0.80 in (2019) |
| August 27 | 76.5°F (2016) | 36.5°F (2025) | 0.55 in (2015) |
| August 28 | 73.2°F (2016) | 35.6°F (2019) | 1.28 in (2012) |
| August 29 | 70.7°F (2019) | 31.8°F (2019) | 0.80 in (2022) |
| August 30 | 71.1°F (2019) | 29.8°F (2019) | 0.93 in (2015) |
| August 31 | 68.7°F (2019) | 30.9°F (2019) | 1.11 in (2024) |