How Crowded Is Roger Williams National Memorial in September?

September runs about 1.4× Roger Williams National Memorial's average month, which makes it a busy month here — roughly 12% of the park's yearly visitors come in September.

In a typical September the park sees roughly 5,500 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes September the 4th-busiest of the park's twelve months, sitting between the July peak (1.8×) and the January low (0.2×).

On our Best Time to Visit score September rates 33/100 ("Poor"), versus the top-rated February at 78/100 — the best overall balance of crowds and daylight.

Because June, July and August together draw about 42% 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 12.3 hours of daylight in September to explore — between the 9-hour midwinter low and the 15-hour summer high.

Park-wide, 2025 drew 38,959 recreation visits, down 9.9% from 43,242 in 2024.

Across the past decade overall visitation has eased about 41.4%, so September may feel a touch quieter than it once did.