How Crowded Is Joshua Tree National Park in September?

September runs about 0.7× Joshua Tree National Park's average month, which makes it a quiet month here — roughly 5% of the park's yearly visitors come in September.

In a typical September the park sees about 156,000 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes September the 10th-busiest of the park's twelve months, sitting between the March peak (1.6×) and the July low (0.6×).

On our Best Time to Visit score September rates 72/100 ("Good") — the single best-rated month at Joshua Tree, balancing crowds against weather and daylight.

Typical September weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 97°F and an overnight low around 69°F, with about 0.3" of precipitation.

That average of about 83°F is warm enough that midday heat is worth planning around.

Because June, July and August together draw about 15% 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 12.2 hours of daylight in September to explore — between the 9.8-hour midwinter low and the 14.2-hour summer high.

Park-wide, 2025 drew 2,932,644 recreation visits, down 2% from 2,991,874 in 2024.

Across the past decade overall visitation has risen about 15%, so a September visit is likely to feel busier than it did a few years ago.