Hawaiʻi Volcanoes in October: Crowds, Weather & What to Pack
Peak crowds · VisitWhen score 49/100 · #5 of 12 months
October is peak season — expect the year's biggest crowds at Hawaiʻi Volcanoes National Park: crowds run 78% of the December peak (117,453 average visits), days average 77°F with 11.7 hours of daylight. Computed from NPS and NOAA data.
Crowds in October
Hawaiʻi Volcanoes averages 117,453 recreation visits in October — 78% of what December, the peak month, draws. Trailheads and parking fill accordingly — book early and start days at dawn.
Weather & daylight
Days are mild (highs average 77°F), and nights stay mild (lows average 61°F). This is one of the wetter months (18.2″ of precipitation on average). Mid-month daylight runs 11.7 hours.
NOAA 1991–2020 monthly normals, station GLENWOOD #2 55.4, HI US (8 mi from park coordinates, 2,200 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of October.
What to pack for Hawaiʻi Volcanoes in October
Computed from the month's weather normals above — not a generic list.
- Rain shell + pack cover — 18.2″ of precipitation is normal this month
- Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month
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If your dates are flexible, consider shifting: The computed best month for Hawaiʻi Volcanoes is April.
Also at their best in October
Other parks whose computed October verdict is a best window — same NPS × NOAA formula:
- Badlands in October — 27% of peak crowds, highs 63°F, score 81/100
- Isle Royale in October — 2% of peak crowds, highs 51°F, score 81/100
- Wind Cave in October — 25% of peak crowds, highs 61°F, score 81/100
- Gateway Arch in October — 26% of peak crowds, highs 69°F, score 80/100
Common questions
Is Hawaiʻi Volcanoes crowded in October?
Yes — October runs 78% of Hawaiʻi Volcanoes's peak, averaging 117,453 recreation visits (NPS, 2021–2025).
What is the weather like in Hawaiʻi Volcanoes in October?
Average highs of 77°F, lows of 61°F, 18.2″ of precipitation (NOAA 1991–2020 normals, GLENWOOD #2 55.4, HI US station).
What should I pack for Hawaiʻi Volcanoes in October?
Rain shell + pack cover; Sturdy broken-in footwear, navigation and a basic first-aid kit — the full weather-computed list is on this page.
See also: the best national parks to visit in October · Last verified 2026-09-12