Weather on December 21 at Biscayne

Biscayne National Park

FLSoutheast
Avg High75°F
Avg Low63°F
Warmest201378°F
Coldest198149°F

Based on 55 years of data from Miami, FL

Planning Your Visit

December 21st in Biscayne National Park (via Miami, FL) typically brings pleasant winter weather, with average highs around 75°F and lows near 63°F. Over 55 years of records, the warmest December 21st was in 2013 (78°F average), while the coldest was 1981 (49°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 22% of December 21st dates historically, with the wettest December 21st recording 4.39" of rain. The last decade has been 4.9°F warmer on this date compared to 20-30 years ago.

The last decade has been 4.9°F warmer on this date compared to 20-30 years ago.

Planning for December 21st in Biscayne? Great weather for outdoor activities.

Year by Year History

YearHighLowPrecipSnow
202580°F70°F0"--
202479°F54°F0"--
202369°F59°F0"--
202280°F69°F0.71"--
202176°F70°F0"--
202068°F60°F0"--
201976°F55°F0"--
201881°F69°F2.51"--
201782°F66°F0"--
201682°F71°F0"--
201580°F72°F0"--
201477°F65°F0"--
201380°F75°F0"--
201281°F74°F0"--
201176°F71°F0"--
201068°F49°F0"0"
200962°F51°F0"0"
200877°F63°F0"0"
200783°F70°F0.48"--
200677°F73°F0"0"
200569°F62°F0"0"
200469°F50°F0"0"
200368°F48°F0"0"
200272°F55°F0"0"
200175°F59°F0"0"
200070°F48°F0"0"
199981°F71°F0"0"
199879°F76°F0.13"0"
199775°F70°F0"0"
199668°F53°F0"0"
199572°F52°F0"0"
199476°F68°F4.39"0"
199381°F69°F0"0"
199278°F72°F0"0"
199173°F67°F0"0"
199082°F71°F0"0"
198981°F71°F0.08"0"
198877°F71°F0.08"0"
198777°F73°F0"0"
198674°F63°F1.8"0"
198567°F57°F0"0"
198476°F73°F0"0"
198380°F72°F0"0"
198268°F50°F0"0"
198168°F30°F0"0"
198075°F60°F0"0"
197974°F62°F0"0"
197880°F70°F0"0"
197779°F54°F0"0"
197675°F52°F0.36"0"
197570°F50°F0"0"
197479°F66°F1.3"0"
197366°F61°F0"0"
197277°F64°F0.28"0"
197182°F70°F0.05"0"

December 21 at Nearby Parks

Holiday Weather at Biscayne

Official NPS WebsiteVisit nps.gov/bisc for park information, alerts, and reservations

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