How Crowded Is Indiana Dunes National Park in December?

December runs about 0.4× Indiana Dunes National Park's average month, which makes it a very quiet month here — roughly 3% of the park's yearly visitors come in December.

In a typical December the park sees about 82,000 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes December the 10th-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 December rates 41/100 ("Poor"), versus the top-rated May at 65/100 — best overall balance of crowds, weather and daylight.

Typical December weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 37°F and an overnight low around 24°F, with about 2.3" of precipitation and roughly 7" of snow.

That average of about 31°F is cold, with winter conditions likely on higher ground.

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

You'll have about 9 hours of daylight in December to explore — near the year-round minimum.

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 December visit is likely to feel busier than it did a few years ago.