May is a good month at Hawaiʻi Volcanoes — it ranks first of the twelve here. Expect about 25% fewer visitors than December, the park's peak — 112,776 visits on average. Days run around 71°F by afternoon and 53°F at night, with 13 hours of daylight.
May against the park's best
| Month | Verdict | Avg. visits | vs. peak | High | Low | Snow | Daylight |
|---|---|---|---|---|---|---|---|
| May (this page) | Good | 112,776 | −25% | 71°F | 53°F | 0" | 13 h |
| December (peak crowds) | Good | 150,746 | peak | 68°F | 52°F | 0" | 11 h |
Weather figures are for the Kīlauea Visitor Center area (4,000 ft) — the Hawaii Vol NP HQ 54 station. Visits are 2021–2025 averages; climate normals cover 1991–2020. Conditions vary across the park; check current status before you go.
Common questions
Is May a good time to visit Hawaiʻi Volcanoes?
Yes — it is the park's best-scoring month. May ranks 1 of 12 at Hawaiʻi Volcanoes on crowds, weather, daylight, and access together.
How crowded is Hawaiʻi Volcanoes in May?
About 112,776 recreation visits on average — 25% below December, the park's peak.
How warm is Hawaiʻi Volcanoes in May?
Average highs around 71°F and lows around 53°F at the Hawaii Vol NP HQ 54 station.
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