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December Weather in Miami, United States

Last updated: June 24, 2025

In December, the average temperature in Miami, United States hovers around 5°C (41°F). Expect chilly days with minimums dipping to -11°C (13°F) and the occasional warm spell peaking at 26°C (79°F). On average, 20 mm (0.8 in) of precipitation falls over the course of 1 day, contributing to an average humidity of 81%. Prepare for a refreshing month filled with varied weather!

December Temperature in Miami

In December in Miami, the average temperature is 5°C (41°F), with maximums reaching 26°C (79°F) and minimums dropping as low as -11°C (13°F). Travelers should prepare for a wide range of temperatures during this time.

December Weather in Miami: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Miami, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Miami, December typically has an average temperature of 5°C (41°F), with highs reaching up to 26°C (79°F) and lows dropping to around -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec373850576777807872584841
Data source: Temperature data for Miami generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Miami

In Miami in December, the precipitation amount is 20 mm (0.8 in) over a period of 1 day.

December Precipitation Trends in Miami

The chart displays monthly precipitation patterns in Miami, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Miami, December typically receives around 20 mm (0.8 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec211345407348436648611420
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Miami

In Miami in December, humidity is 81%. With an average temperature of 5°C (41°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor exploration uncomfortable and requiring warm, waterproof clothing to stay comfortable while traveling.

December Average Humidity in Miami

This chart illustrates the average monthly humidity levels in Miami, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Miami is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%76%64%70%78%81%82%78%72%73%81%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Miami

In Miami in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Miami for better planning.

Maximum UV Index Levels in Miami for December

The chart shows the monthly maximum UV Index (UVI) for Miami in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Miami typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101112121110754
Data source: Miami December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Miami Compares to Other Months

Weather in Miami varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Miami, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Miami, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)21 mm (0.8 inches)75%moderate
February Weather3°C (38°F)13 mm (0.5 inches)76%high
March Weather10°C (50°F)45 mm (1.8 inches)64%very high
April Weather14°C (57°F)40 mm (1.6 inches)70%very high
May Weather19°C (67°F)73 mm (2.9 inches)78%extreme
June Weather25°C (77°F)48 mm (1.9 inches)81%extreme
July Weather27°C (80°F)43 mm (1.7 inches)82%extreme
August Weather26°C (79°F)66 mm (2.6 inches)78%extreme
September Weather22°C (73°F)48 mm (1.9 inches)72%very high
October Weather14°C (58°F)61 mm (2.4 inches)73%high
November Weather9°C (48°F)14 mm (0.5 inches)80%moderate
December Weather5°C (41°F)20 mm (0.8 inches)81%moderate

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