Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The arrival of December brings an average high-temperature of a still warm 75.7°F (24.3°C), subtly diverging from November's 77.9°F (25.5°C). Throughout December, Miami observes a steady low-temperature average of 69.4°F (20.8°C), reflecting a minor dip from daytime highs.Humidity
With an average relative humidity of 75%, December is the most humid month.Rainfall
In Miami, in December, it is raining for 11.7 days, with typically 0.75" (19mm) of accumulated 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 Miami, the average seawater temperature in December is 76.5°F (24.7°C).Note: Your comfort in 76.5°F (24.7°C) waters hinges on your relationship with the cold, today's sunny disposition, wind patterns, and the air's temperature. For context, Olympic swimmers are no strangers to waters of 77°F (25°C) to 82.4°F (28°C).
Daylight
With an average of 10h and 36min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:50 am and sunset at 5:29 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:40 pm EST.
Sunshine
With an average of 6.4h of sunshine, December has the least sunshine of the year in Miami.UV index
January and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In December, the maximum UV index of 5 translates into these guidelines:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Stay sun-safe with clothing that is both closely woven and worn loosely. Alert! UV radiation becomes sharper due to reflections from sand and water.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
What is the ocean temperature in December in Miami?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Miami, FL
- Average high temperature in December: 75.7°F
The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is January (73°F).
- Average low temperature in December: 69.4°F
The month with the highest average low temperature is August (82.6°F).
The coldest month (with the lowest average low temperature) is January (65.1°F).
Average pressure in December
Miami, FL
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are September and October (29.95"Hg).
Average wind speed in December
Miami, FL
- Average wind speed in December: 11.1mph
The windiest month (with the highest average wind speed) is March (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
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: 0.75"
The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is January (0.43").
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: 76.4°F
The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (74°F).
Average daylight in December /
Average sunshine in December
Miami, FL
- Average daylight in December: 10h and 4min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in December
Miami, FL
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is March (17 days).
The month with the least sunshine days is September (3.2 days).
Average UV index in December
Miami, FL
- Average UV index in December: 5
The months with the highest UV index are May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January and December (UV index 5).
Average cloud cover in December
Miami, FL
- Average cloud cover in December: 32
The month with the most cloud cover is October (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 26).
Average visibility in December
Miami, FL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Miami, Florida, USA
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