Miami
Florida, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Miami, FL

December, the first month of the winter, in Miami, is still a warm month, with average temperature fluctuating between 75.7°F (24.3°C) and 69.4°F (20.8°C).

Temperature

In Miami, the average high-temperature is almost the same as in November - a still moderately hot 75.7°F (24.3°C). In December, the average low-temperature is 69.4°F (20.8°C).

Humidity

The most humid month is December, with an average relative humidity of 75%.

Rainfall

In Miami, during December, the rain falls for 11.7 days and regularly aggregates up to 0.75" (19mm) of precipitation. In Miami, during the entire year, the rain falls for 182.7 days and collects up to 16.38" (416mm) of precipitation.

Ocean temperature

In December, the average ocean temperature in Miami, Florida, is 76.5°F (24.7°C).
Note: For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 76.5°F (24.7°C).

Daylight

The month with the shortest days in Miami, Florida, is December, with an average of 10.5h of daylight.

Sunshine

December has the least sunshine of the year in Miami, with an average of 6.4h of sunshine.

UV index

Months with the lowest UV index in Miami, Florida, are January and December, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in December in Miami?

In December, in Miami, the average high-temperature is 75.7°F (24.3°C), and the average low-temperature is 69.4°F (20.8°C).

What is the most humid month in Miami?

December is the most humid month, with an average relative humidity of 75%.

What is the average humidity in December in Miami?

In December, the average relative humidity is 75%.

How many days does it rain in December in Miami?

In Miami, Florida, in December, it is raining for 11.7 days, with typically 0.75" (19mm) of accumulated precipitation.

What is the ocean temperature in December in Miami?

In Miami, Florida, the average seawater temperature in December is 76.5°F (24.7°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 76.5°F (24.7°C) water.

What is the month with the shortest days in Miami?

The month with the shortest days in Miami is December, with an average of 10.5h of daylight.

What is the average length of the day in December in Miami?

In December, the average length of the day is 10.5h.

What is the month with the least sunshine in Miami?

The month with the least sunshine in Miami is December, with an average of 6.4h of sunshine.

How long on average sun shines in December in Miami?

In Miami, the average sunshine in December is 6.4h.

What is the month with the lowest UV index in Miami?

Months with the lowest UV index in Miami, Florida, are January and December, with an average maximum UV index of 5.

How high is the UV index in December in Miami?

In Miami, Florida, the average daily maximum UV index in December is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.
Average temperature in December - Miami, FL
  • Average high temperature in December: 24.3°C

The warmest month (with the highest average high temperature) is August (30.6°C).
The month with the lowest average high temperature is January (22.8°C).

  • Average low temperature in December: 20.8°C

The month with the highest average low temperature is August (28.1°C).
The coldest month (with the lowest average low temperature) is January (18.4°C).

Average humidity in December - Miami, FL
  • Average humidity in December: 75%

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (70%).

Average rainfall in December - Miami, FL
  • Average rainfall in December: 19mm

The wettest month (with the highest rainfall) is August (71mm).
The driest month (with the least rainfall) is January (11mm).

Average rainfall days in December - Miami, FL
  • Average rainfall days in December: 11.7 days

The month with the highest number of rainy days is September (24.5 days).
The month with the least rainy days is February (8.7 days).

Average sea temperature in December - Miami, FL
  • Average sea temperature in December: 24.7°C

The best month for swimming (with the highest average sea temperature) is August (30.3°C).
The coldest month (with the lowest average sea temperature) is February (23.3°C).

Average daylight in December / Average sunshine in December - Miami, FL
  • Average daylight in December: 10.5h

The month with the longest days is June (Average daylight: 13.7h).
The month with the shortest days is December (Average daylight: 10.5h).

  • Average sunshine in December: 6.4h

The month with the most sunshine is July (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 6.4h).

Average UV index in December - Miami, FL
  • Average UV index in December: 5

Months with the highest UV index are May, June, July, August, September and October (UV index 7).
Months with the lowest UV index are January and December (UV index 5).