How Crowded Is Lake Clark National Park & Preserve in September?

September runs about 1.6× Lake Clark National Park & Preserve's average month, which makes it a very busy month here — roughly 14% of the park's yearly visitors come in September.

In a typical September the park sees roughly 1,800 recreation visits, based on National Park Service monthly counts from 1982 to 2025.

That makes September the 4th-busiest of the park's twelve months, sitting between the August peak (3.3×) and the January low (0.1×).

On our Best Time to Visit score September rates 50/100 ("Fair"), versus the top-rated May at 73/100 — best overall balance of crowds, weather and daylight.

Typical September weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 57°F and an overnight low around 42°F, with about 2.6" of precipitation.

That average of about 50°F is cool, so layers and a shorter daylight window matter.

Because June, July and August together draw about 70% 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 12.5 hours of daylight in September to explore — between the 5.3-hour midwinter low and the 18.6-hour summer high.

Park-wide, 2017 drew 22,755 recreation visits, up 7.8% from 21,102 in 2016.

Across the past decade overall visitation has risen about 109.9%, so a September visit is likely to feel busier than it did a few years ago.