Biscayne in December: Crowds, Weather & What to Pack
Best window · VisitWhen score 62/100 · #3 of 12 months
December is one of the best months of the year to visit Biscayne National Park: crowds run 77% of the May peak (47,260 average visits). Weather: highs average 80°F and lows 66°F, with 2.2″ of precipitation and 10.6 hours of daylight. Computed from NPS and NOAA data.
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Crowds in December
Biscayne averages 47,260 recreation visits in December — 77% of what May, the peak month, draws. That crowd level sets the tone for parking, permits and lodging — book early and start days at dawn.
Weather & daylight
Days are pleasant (highs average 80°F), and nights stay mild (lows average 66°F). Average precipitation is 2.2″ for the month. Mid-month daylight runs 10.6 hours.
NOAA 1991–2020 monthly normals, station CAPE FLORIDA, FL US (12 mi from park coordinates, 6 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of December.
What to pack for Biscayne in December
Computed from the month's weather normals above — not a generic list.
- Packable rain jacket — 2.2″ of precipitation is normal this month
- Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month
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Also at their best in December
Other parks whose computed December verdict is a best window — same NPS × NOAA formula:
- American Samoa in December — 17% of peak crowds, highs 88°F, score 66/100
- Everglades in December — 72% of peak crowds, highs 80°F, score 64/100
Common questions
Is Biscayne crowded in December?
Yes — December runs 77% of Biscayne's peak, averaging 47,260 recreation visits (NPS, 2021–2025).
What is the weather like in Biscayne in December?
Average highs of 80°F, lows of 66°F, 2.2″ of precipitation (NOAA 1991–2020 normals, CAPE FLORIDA, FL US station).
What should I pack for Biscayne in December?
Packable rain jacket; Sturdy broken-in footwear, navigation and a basic first-aid kit — the full weather-computed list is on this page.
See also: the best national parks to visit in December · Last verified 2026-09-24