How Crowded Is Indiana Dunes in December?
December is a very quiet month at Indiana Dunes National Park, running about 0.4× the park's average month — roughly 3% of the year's visitors come in December. That puts it between the July peak and the January low. Overall our best-time score rates December as "Poor" for a visit. Typical December weather averages a high near 37°F and a low around 24°F, with about 2.3" of precipitation and roughly 7.3" of snow. You'll get about 9.0 hours of daylight to explore.
Frequently Asked Questions
December is very quiet at Indiana Dunes National Park (about 0.4× the average month). Our best-time score rates it "Poor". The single best month overall is May.
The busiest month is July and the quietest is January. December sits at about 0.4× the park's average, or 3% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.