How Crowded Is Puʻukoholā Heiau National Historic Site in September?

September runs about 0.8× Puʻukoholā Heiau National Historic Site's average month, which makes it a quiet month here — roughly 7% of the park's yearly visitors come in September.

In a typical September the park sees roughly 6,400 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

It is the quietest month of the year at Puʻukoholā Heiau; by contrast February, the busiest, runs about 1.3× the average — so September is the easiest time to have the place largely to yourself.

On our Best Time to Visit score September rates 77/100 ("Excellent") — the single best-rated month at Puʻukoholā Heiau, balancing crowds against weather and daylight.

Typical September weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 88°F and an overnight low around 75°F, with about 0.6" of precipitation.

That average of about 81°F is warm enough that midday heat is worth planning around.

Because June, July and August together draw about 23% of annual visitors, choosing September instead steps outside that summer crush — the single biggest lever on how crowded the park feels.

You'll have about 12.1 hours of daylight in September to explore — between the 10.8-hour midwinter low and the 13.2-hour summer high.

Park-wide, 2024 drew 27,507 recreation visits, up 18.6% from 23,197 in 2023.

Across the past decade overall visitation has eased about 66%, so September may feel a touch quieter than it once did.