Last updated: June 24, 2025
In December, the average temperature in Miami, United States hovers around 8°C (46°F), with a minimum dipping to -4°C (25°F) and a maximum reaching a pleasant 23°C (74°F). Expect about 42 mm (1.6 in) of precipitation spread over approximately 5 days, contributing to the region's average humidity of 82%. Whether you’re soaking up the mild days or bracing against the cooler nights, this month offers a unique blend of weather!
In December in Miami, the average temperature is 8°C (46°F). The maximum can reach 23°C (74°F) and the minimum can be as low as -4°C (25°F). It's a great time to visit if you’re prepared for a mix of mild and chilly weather.
In Miami in December, the precipitation amount is 42 mm (1.6 in) over a period of 5 days.
In Miami in December humidity is 82%. With an average temperature of 8°C (46°F), this humidity feels like a thick, damp blanket wrapping around you, making travel uncomfortable and creating a sense of heaviness in the air that can sap your energy quickly.
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.
UV Risk Categories
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.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 7°C (45°F) | 56 mm (2.2 inches) | 76% | moderate |
| February Weather | 8°C (48°F) | 60 mm (2.4 inches) | 79% | high |
| March Weather | 12°C (54°F) | 44 mm (1.7 inches) | 67% | very high |
| April Weather | 18°C (64°F) | 4 mm (0.2 inches) | 55% | extreme |
| May Weather | 22°C (71°F) | 10 mm (0.4 inches) | 40% | extreme |
| June Weather | 28°C (83°F) | 5 mm (0.2 inches) | 33% | extreme |
| July Weather | 28°C (83°F) | 76 mm (3.0 inches) | 34% | extreme |
| August Weather | 28°C (82°F) | 47 mm (1.8 inches) | 48% | extreme |
| September Weather | 25°C (77°F) | 44 mm (1.7 inches) | 64% | very high |
| October Weather | 18°C (65°F) | 37 mm (1.4 inches) | 67% | very high |
| November Weather | 13°C (56°F) | 27 mm (1.1 inches) | 77% | high |
| December Weather | 8°C (46°F) | 42 mm (1.6 inches) | 82% | moderate |