Glacier Bay National Park weather in May
May in Glacier Bay National Park: cold, soaked, with clean air — a great time to visit.
#3 of 12 months in Glacier Bay National Park · #415 of 604 destinations to visit in May · comfort 75/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Glacier Bay National Park climate normals — May
| Daytime high | 6°C / 42°F | 🧥 cold |
|---|---|---|
| Nighttime low | 2°C / 36°F | |
| Feels like (high) | 3°C / 37°F | |
| Rainfall | 222 mm / 8.7 in | ⛈ soaked |
| Rainy days | 15 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 0°C / 31°F | |
| Sunshine | 10.1 h/day | |
| Daylight | 16.8 h | |
| Wind | 12 km/h / 8 mph | |
| Snowfall | 83.8 cm / 33 in | |
| Air quality (US AQI) | 37 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Glacier Bay National Park?
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Glacier Bay National Park in May — FAQ
- Is May a good time to visit Glacier Bay National Park?
- May in Glacier Bay National Park: cold, soaked, with clean air — a great time to visit. It ranks #3 of 12 months for Glacier Bay National Park on SeasonMap's comfort score (75/100).
- What is the weather like in Glacier Bay National Park in May?
- In May, Glacier Bay National Park averages a daily high of 5.8°C and a low of 2.1°C, with about 221.7 mm of rain over roughly 15.2 rainy days.
- What is the air quality in Glacier Bay National Park in May?
- Glacier Bay National Park has a mean US Air Quality Index of about 37 in May.
- Does it snow in Glacier Bay National Park in May?
- Glacier Bay National Park sees roughly 83.8 cm of snowfall in May.