How Crowded Is Amistad National Recreation Area in September?

September runs about 1× Amistad National Recreation Area's average month, which makes it an average month here — roughly 8% of the park's yearly visitors come in September.

In a typical September the park sees about 87,000 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes September the 7th-busiest of the park's twelve months, sitting between the May peak (1.3×) and the January low (0.7×).

On our Best Time to Visit score September rates 55/100 ("Fair"), versus the top-rated February at 70/100 — pleasant weather with noticeably thinner crowds (shoulder season).

Typical September weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 90°F and an overnight low around 69°F, with about 3.2" of precipitation.

That average of about 80°F is warm enough that midday heat is worth planning around.

Because June, July and August together draw about 29% 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 10.1-hour midwinter low and the 13.9-hour summer high.

Park-wide, 2025 drew 734,293 recreation visits, down 11.8% from 832,294 in 2024.

Across the past decade overall visitation has eased about 28.8%, so September may feel a touch quieter than it once did.