Hawai'i Volcanoes National Park in May
In May, Hawai'i Volcanoes National Park averages a high of 71°F and a low of 53°F, with 6.5 inches of precipitation (rain plus melted snow). About 117,000 people visit, the 11th busiest of 12 (busy). Days are 13 hours 02 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 71° / 53°F
- Precipitation
- 6.5in
- Snow
- 0in
- Daylight
- 13h 2m
- Visitors
- 117,000
- Crowds
- Busy
May is one of the best months to visit: mild weather with busy crowds.
Higher or lower in the park, expect a different picture: Sea Mtn 12.15, HI at 80 ft averages a May high of 82°F and a low of 68°F.
Weather 1991–2020 averages at Hawaii Vol NP HQ 54, HI, 8.8 miles from the park's center, 3,971 ft. Second station lower down: Sea Mtn 12.15, HI, 80 ft, 21.3 miles. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in May
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Haleakala National Park | 63° / 46° | Very 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: Hawai'i Volcanoes National Park on nps.gov
All twelve months at Hawai'i Volcanoes · National parks to visit in May