Hawaiʻi Volcanoes in August: Crowds, Weather & What to Pack

Peak crowds · VisitWhen score 47/100 · #7 of 12 months

August is peak season — expect the year's biggest crowds at Hawaiʻi Volcanoes National Park: crowds run 92% of the December peak (139,355 average visits), days average 77°F with 12.8 hours of daylight. Computed from NPS and NOAA data.

Crowds in August

Hawaiʻi Volcanoes averages 139,355 recreation visits in August — 92% of what December, the peak month, draws. Plan lodging and entries with that in mind — book early and start days at dawn.

Weather & daylight

Daytime temperatures are comfortable (highs average 77°F), and nights stay mild (lows average 62°F). This is one of the wetter months (23.5″ of precipitation on average). Mid-month daylight runs 12.8 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 August.

What to pack for Hawaiʻi Volcanoes in August

Computed from the month's weather normals above — not a generic list.

• Rain shell + pack cover — 23.5″ 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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Looking for a better window? The computed best month for Hawaiʻi Volcanoes is April.

Also at their best in August

Other parks whose computed August verdict is a best window — same NPS × NOAA formula:

• Big Bend in August — 18% of peak crowds, highs 84°F, score 83/100
• Guadalupe Mountains in August — 28% of peak crowds, highs 84°F, score 80/100
• Lassen Volcanic in August — 56% of peak crowds, highs 78°F, score 77/100
• Bryce Canyon in August — 81% of peak crowds, highs 78°F, score 68/100

Common questions

See also: the best national parks to visit in August · Last verified 2026-09-12