Great Sand Dunes in December: Crowds, Weather & What to Pack

Shoulder · VisitWhen score 57/100 · #12 of 12 months

December is a solid shoulder-season month to visit Great Sand Dunes National Park: crowds run 9% of the June peak (8,421 average visits), days average 34°F with 9.6 hours of daylight. Computed from NPS and NOAA data.

Crowds in December

Great Sand Dunes averages 8,421 recreation visits in December — 9% of what June, the peak month, draws — the third-quietest month of the year. Plan lodging and entries with that in mind — this is genuine quiet-season territory.

Weather & daylight

Expect cold conditions (highs average 34°F), and nights are frigid (lows average 12°F). It is typically dry (0.5″ of precipitation). Normal snowfall is 7″ — expect snow on the ground. Mid-month daylight runs 9.6 hours.

NOAA 1991–2020 monthly normals, station GREAT SAND DUNES NP & PRESERVE, CO US (7 mi from park coordinates, 8,183 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of December.

What to pack for Great Sand Dunes in December

Computed from the month's weather normals above — not a generic list.

• Insulated parka + thermal base layers — average lows of 12°F
• Traction devices (microspikes) and gaiters — 7″ normal snowfall
• Headlamp — only 9.6 hours of daylight in mid-December
• Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month

Looking for a better window? The computed best months for Great Sand Dunes are March and April.

Common questions

See also: the best national parks to visit in December · Last verified 2026-07-16