Haleakala National Park in May
In May, Haleakala National Park averages a high of 63°F and a low of 46°F, with 2.4 inches of precipitation (rain plus melted snow). About 74,000 people visit, the busiest month. Days are 13 hours 06 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 63° / 46°F
- Precipitation
- 2.4in
- Snow
- 0in
- Daylight
- 13h 6m
- Visitors
- 74,000
- Crowds
- Very busy
Best months for weather and crowds instead: April (very busy), August (busy) and September (busy).
Higher or lower in the park, expect a different picture: Ohe'o 258.6, HI at 86 ft averages a May high of 80°F and a low of 70°F.
Weather 1991–2020 averages at Haleakala RS 338, HI, 8.5 miles from the park's center, 6,962 ft. Second station lower down: Ohe'o 258.6, HI, 86 ft, 6.3 miles. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in May
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Hawai'i Volcanoes National Park | 71° / 53° | Busy | Mild |
| Pearl Harbor National Memorial | 85° / 72° | Busy | Hot |
| Point Reyes National Seashore | 58° / 48° | Busy | Mild |
| Golden Gate National Recreation Area | 74° / 50° | Very busy | Mild |
| Fort Point National Historic Site | 64° / 51° | Busy | Mild |
Closures, reservations and alerts: Haleakala National Park on nps.gov
All twelve months at Haleakala · National parks to visit in May