How Crowded Is Boston National Historical Park in September?
September runs about 1.3× Boston National Historical Park's average month, which makes it a busy month here — roughly 11% of the park's yearly visitors come in September.
In a typical September the park sees about 293,000 recreation visits, based on National Park Service monthly counts from 1979 to 2025.
That makes September the 5th-busiest of the park's twelve months, sitting between the July peak (1.9×) and the January low (0.3×).
On our Best Time to Visit score September rates 60/100 ("Good"), versus the top-rated May at 62/100 — 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 73°F and an overnight low around 58°F, with about 3.6" of precipitation.
That average of about 66°F is a comfortable range for hiking and being outdoors all day.
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 8.9-hour midwinter low and the 15.1-hour summer high.
Park-wide, 2025 drew 2,383,812 recreation visits, down 13.1% from 2,744,458 in 2024.
Frequently Asked Questions
September is busy at Boston National Historical Park (about 1.3× the average month). Our best-time score rates it "Good". The single best month overall is May.
The busiest month is July and the quietest is January. September sits at about 1.3× the park's average, or 11% of annual visitation.
A typical September sees about 293,000 recreation visits at Boston National Historical Park, based on National Park Service monthly counts from 1979–2025.
Where to stay near Boston in September
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Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-07-14.