May weather in Gustavus, AK
The average temperature in Gustavus in May is 46.0°F (35.1°F–56.9°F). Average precipitation: 2.75 inches.
May is a spring month in Gustavus, and is warmer than the annual average of 40.7°F. Daily temperatures swing about 21.8°F between overnight low and afternoon high. Daylight averages about 16h 29m. For travel, May is cool.
Avg High
56.9°F
Avg Low
35.1°F
Precipitation
2.75 in
Daylight
16h 29m
May records in Gustavus
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 67.1°F (2014) | 22.8°F (2024) | 0.66 in (2025) |
| May 2 | 68.7°F (2014) | 23.7°F (2024) | 1.22 in (2023) |
| May 3 | 67.3°F (2024) | 25.0°F (2015) | 0.59 in (2013) |
| May 4 | 62.6°F (2014) | 23.0°F (2014) | 1.07 in (2013) |
| May 5 | 60.8°F (2015) | 20.8°F (2017) | 0.64 in (2024) |
| May 6 | 57.6°F (2018) | 24.3°F (2020) | 0.62 in (2016) |
| May 7 | 60.4°F (2018) | 27.1°F (2022) | 0.54 in (2016) |
| May 8 | 67.3°F (2018) | 25.2°F (2013) | 0.30 in (2024) |
| May 9 | 72.1°F (2020) | 23.4°F (2022) | 1.23 in (2024) |
| May 10 | 75.0°F (2020) | 23.9°F (2017) | 0.30 in (2025) |
| May 11 | 70.7°F (2016) | 26.2°F (2024) | 0.62 in (2013) |
| May 12 | 74.8°F (2016) | 22.8°F (2022) | 0.38 in (2023) |
| May 13 | 79.3°F (2016) | 24.3°F (2019) | 0.64 in (2021) |
| May 14 | 76.5°F (2016) | 31.1°F (2019) | 0.35 in (2021) |
| May 15 | 72.7°F (2016) | 27.3°F (2022) | 0.38 in (2021) |
| May 16 | 74.5°F (2014) | 25.7°F (2018) | 0.59 in (2016) |
| May 17 | 75.6°F (2023) | 25.7°F (2018) | 0.26 in (2019) |
| May 18 | 77.0°F (2023) | 25.5°F (2021) | 0.22 in (2013) |
| May 19 | 68.2°F (2022) | 28.4°F (2025) | 0.39 in (2020) |
| May 20 | 70.9°F (2019) | 26.4°F (2022) | 0.38 in (2014) |
| May 21 | 70.0°F (2022) | 26.4°F (2022) | 0.73 in (2018) |
| May 22 | 73.2°F (2015) | 26.2°F (2022) | 0.54 in (2018) |
| May 23 | 60.1°F (2013) | 27.0°F (2014) | 0.42 in (2024) |
| May 24 | 61.0°F (2014) | 30.0°F (2014) | 0.30 in (2020) |
| May 25 | 66.6°F (2019) | 25.0°F (2014) | 0.60 in (2023) |
| May 26 | 72.7°F (2019) | 26.2°F (2014) | 0.60 in (2023) |
| May 27 | 72.3°F (2022) | 25.9°F (2017) | 0.21 in (2015) |
| May 28 | 74.8°F (2013) | 29.1°F (2017) | 0.92 in (2025) |
| May 29 | 71.1°F (2022) | 33.3°F (2022) | 0.18 in (2023) |
| May 30 | 73.8°F (2022) | 28.6°F (2022) | 0.41 in (2025) |
| May 31 | 64.9°F (2017) | 28.0°F (2018) | 1.44 in (2021) |