How Crowded Is Indiana Dunes National Park in October?

October runs about 0.9× Indiana Dunes National Park's average month, which makes it an average month here — roughly 7% of the park's yearly visitors come in October.

In a typical October the park sees about 173,000 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes October the 6th-busiest of the park's twelve months, sitting between the July peak (2.2×) and the January low (0.4×).

On our Best Time to Visit score October rates 58/100 ("Fair"), versus the top-rated May at 65/100 — best overall balance of crowds, weather and daylight.

Typical October weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 62°F and an overnight low around 45°F, with about 3.8" of precipitation.

That average of about 54°F is a comfortable range for hiking and being outdoors all day.

Because June, July and August together draw about 49% of annual visitors, choosing October instead steps outside that summer crush — the single biggest lever on how crowded the park feels.

You'll have about 10.8 hours of daylight in October to explore — between the 9-hour midwinter low and the 15-hour summer high.

Park-wide, 2025 drew 2,629,497 recreation visits, down 2.8% from 2,705,209 in 2024.

Across the past decade overall visitation has risen about 40.6%, so a October visit is likely to feel busier than it did a few years ago.