Miami, Florida weather in December

Averages from 2021–2025 (155 days of record).

Average high: 77°F
Average low: 67°F
Rainy days: ~12 per month
Total precipitation: 4.7 in
Warmest recorded: 84°F
Coldest recorded: 45°F

Expect December days in Miami, Florida to top out around 77°F and cool to about 67°F overnight, with roughly 12 days of measurable rain across the month. In recent years December has ranged from 45°F to 84°F.

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Current Miami, Florida forecast → · Historical data by Open-Meteo (ERA5).