Get the monthly weather forecast for Miami, FL, including daily high/low, historical averages, to help you plan ahead.

There is a 59% chance of a perfect sunny day and a 41% chance of seeing some clouds, with on average 43mm of rainfall this month.

The average high in Miami's 24ºC in December, with things staying quite pleasant in the evenings, which cool to 17ºC. The sea temperature stays at a warm 25ºC, ...

You will see average highs of 24°C and average lows of 17°C, which is certainly a mild winter by the standards of most countries. Throughout the US, you will ...

In Miami during December average daily high temperatures decrease from 79°F to 76°F and it is overcast or mostly cloudy about 34% of the time.

Get the monthly weather forecast for Miami Beach, FL, including daily high/low, historical averages, to help you plan ahead.

December in Miami is a mix of mild temperatures and vibrant events. Average daytime highs reach around 75°F, while nights cool to the mid-60s°F range.

December begins with daytime high temperatures that tend to be near 80F (26 C) but will cool down into the mid-70s F (about 24 C) by New Year's Eve.

Nearly every December day warms to over 70 degrees Fahrenheit (21 degrees Celsius) in Miami. Temperatures above 90 °F (32 °C) are not expected here this month.