Biscayne National Park in December
December at Biscayne National Park averages a daytime high near 80°F and an overnight low around 66°F, with about 2.2" of precipitation. Visitation runs about 0.9× the park's average month, which makes December an average month here.
- Average low
- 66°F
- Average high
- 80°F
Range across the year: 63°F to 91°F
- Precipitation
- 2.2 in
- Daylight
- 10.4 hours
Roughly 8% of the park's yearly visitors come in December: about 42,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes December the 9th-busiest of the park's twelve months, sitting between the July peak (1.2×) and the October low (0.7×).
On our Best Time to Visit score December rates 64/100 ("Good"). Our recommended month is November: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 73°F is a comfortable range for hiking and being outdoors all day. These figures are 1991–2020 NOAA climate normals from the nearest station, about 13 miles from the park.
Because June, July and August together draw about 27% 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 10.4 hours of daylight in December to explore — near the year-round minimum.
Park-wide, 2025 drew 486,567 recreation visits, down 5% from 512,213 in 2024.
Across the past decade overall visitation has risen about 17.1%, so a December visit is likely to feel busier than it did a few years ago.
How December compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| November | 83°F / 71°F | 0.8× Quiet | 65 Good |
| December | 80°F / 66°F | 0.9× Average | 64 Good |
| January | 78°F / 63°F | 1.0× Average | 63 Good |
All twelve months at Biscayne, with the best time to visit.
Frequently Asked Questions
December averages a daytime high near 80°F and an overnight low around 66°F at Biscayne National Park, with about 2.2 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 13 miles from the park, so conditions inside the park can differ, especially at other elevations.
December is average at Biscayne National Park (about 0.9× the average month). Our best-time score rates it "Good" at 64/100. Our recommended month is November.
The busiest month is July and the quietest is October. December sits at about 0.9× the park's average, or 8% of annual visitation.
A typical December sees about 42,000 recreation visits at Biscayne National Park, based on National Park Service monthly counts from 1979–2025.
Where to stay near Biscayne in December
Booking a December trip to Biscayne National Park? Compare hotels, cabins and vacation rentals near the park with live December availability and prices.
Top-rated places to stay near Biscayne
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See the full ranking of the best national parks to visit in December.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.