How Crowded Is Hawaiʻi Volcanoes National Park in August?

August runs about 1× Hawaiʻi Volcanoes National Park's average month, which makes it an average month here — roughly 8% of the park's yearly visitors come in August.

In a typical August the park sees about 122,000 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes August the 7th-busiest of the park's twelve months, sitting between the January peak (1.2×) and the September low (0.8×).

On our Best Time to Visit score August rates 62/100 ("Good"), versus the top-rated September at 79/100 — pleasant weather with noticeably thinner crowds (shoulder season).

Typical August weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 85°F and an overnight low around 71°F, with about 2.9" of precipitation.

That average of about 78°F is warm enough that midday heat is worth planning around.

August falls inside the park's busiest stretch: June, July and August together pull about 25% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.

You'll have about 12.7 hours of daylight in August to explore — between the 10.8-hour midwinter low and the 13.2-hour summer high.

Park-wide, 2025 drew 1,877,854 recreation visits, up 31% from 1,433,593 in 2024.

Across the past decade overall visitation has risen about 11.4%, so a August visit is likely to feel busier than it did a few years ago.