Katmai National Park weather in May
May in Katmai National Park: cold, rainy, with clean air — a great time to visit.
#4 of 12 months in Katmai National Park · #361 of 604 destinations to visit in May · comfort 79/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Katmai National Park climate normals — May
| Daytime high | 8°C / 47°F | 🧥 cold |
|---|---|---|
| Nighttime low | 3°C / 37°F | |
| Feels like (high) | 7°C / 45°F | |
| Rainfall | 108 mm / 4.3 in | 🌧 rainy |
| Rainy days | 16 days | |
| Humidity | 84% | 💦 very humid |
| Dew point | 2°C / 35°F | |
| Sunshine | 9.9 h/day | |
| Daylight | 16.8 h | |
| Wind | 10 km/h / 6 mph | |
| Snowfall | 44 cm / 17.3 in | |
| Air quality (US AQI) | 32 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Katmai National Park?
Loading map…
Katmai National Park in May — FAQ
- Is May a good time to visit Katmai National Park?
- May in Katmai National Park: cold, rainy, with clean air — a great time to visit. It ranks #4 of 12 months for Katmai National Park on SeasonMap's comfort score (79/100).
- What is the weather like in Katmai National Park in May?
- In May, Katmai National Park averages a daily high of 8.4°C and a low of 2.8°C, with about 108.3 mm of rain over roughly 16 rainy days.
- What is the air quality in Katmai National Park in May?
- Katmai National Park has a mean US Air Quality Index of about 32 in May.
- Does it snow in Katmai National Park in May?
- Katmai National Park sees roughly 44 cm of snowfall in May.