Miami Weather in December
United States · Tropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
December in Miami sees average temperatures ranging from a low of 18.7°C (65.7°F) to a high of 24.8°C (76.6°F), with a mean of 21.6°C (70.9°F). Compared to the annual average of 24.9°C (76.8°F), this month is 3.3°C cooler than the yearly norm. Precipitation averages 118.0mm, making it approximately 21.0mm drier than the monthly average of 139.0mm. The city receives an average of 8.7 hours of sunshine per day during December, with relative humidity averaging 73.7%. Wind speeds reach an average maximum of 20.5 km/h. For travelers, this month offers a temperature experience in Miami, with drier-than-average conditions compared to the rest of the year.
Miami's data reveals a city that lives between two climate extremes: gorgeous winters and punishing summers. January averages 20°C with 50mm of rain — practically perfect. August averages 29°C with 200mm and 80% humidity. I tracked hurricane season data and September stands out: highest rain (240mm), highest storm risk. The numbers say December-April is the optimal window: 22-25°C, low rain, manageable UV. May-June is statistically underrated — 27°C before peak humidity. July-August is for AC-to-AC dashes. The water stays bathtub-warm 8 months a year, which the data confirms.
December vs Adjacent Months
| Metric | November | December | January |
|---|---|---|---|
| Mean Temp | 24.1°C (75.4°F) | 21.6°C (70.9°F) | 20.7°C (69.3°F) |
| Rainfall | 154.0mm | 118.0mm | 56.0mm |
| Sunshine | 8.9 hrs | 8.7 hrs | 9.4 hrs |
| Humidity | 76.0% | 73.7% | 73.2% |
| Wind | 22.1 km/h | 20.5 km/h | 21.7 km/h |
| Rainy Days | 21.2 | 17.4 | 16.0 |
Seasonal Context
December falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Miami in December, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Miami in December?
The average temperature in Miami during December ranges from 18.7°C (65.7°F) to 24.8°C (76.6°F), with a mean of 21.6°C (70.9°F).
How much does it rain in Miami in December?
Miami receives an average of 118.0mm of precipitation in December, spread across approximately 17.4 rainy days.
What should I pack for Miami in December?
Based on December weather data, pack layers including light jackets and t-shirts, plus an umbrella. Rain gear is essential — this month averages 118.0mm of precipitation.
Is December a good time to visit Miami?
December is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Miami
Cities with Similar December Climate (Tropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 25.76°, -80.19°. Timezone: America/New_York. Last updated: 2026-07-30.