Katmai National Park in May
In May, Katmai National Park averages a high of 52°F and a low of 33°F, with 1.5 inches of precipitation (rain plus melted snow). About 167 people visit, the 6th busiest of 12 (few or no visits). Days are 16 hours 45 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 52° / 33°F
- Precipitation
- 1.5in
- Snow
- –in
- Daylight
- 16h 45m
- Visitors
- 167
- Crowds
- Few or no visits
Best months for weather and crowds instead: June (moderate), July (very busy) and August (busy).
Few or no visitors in May: fewer than 3% of the busiest month's visits. Roads, ferries or the whole park may be closed; check Katmai National Park on nps.gov before you plan.
Weather 1991–2020 averages at King Salmon 42 SE, AK, 36.9 miles from the park's center, 661 ft. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in May
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Lake Clark National Park | 59° / 39° | Few or no visits | Mild |
| Kenai Fjords National Park | 53° / 39° | Quiet | Cool |
| Denali National Park | 54° / 33° | Quiet | Cool |
| Wrangell-St. Elias National Park | 58° / 31° | Quiet | Mild |
| Glacier Bay National Park | 54° / 39° | Busy | Cool |
Closures, reservations and alerts: Katmai National Park on nps.gov
All twelve months at Katmai · National parks to visit in May