December weather forecastBiscayne Park, FL

December

Weather in December

December, the first month of the winter in Biscayne Park, is also a moderately hot month, with an average temperature varying between 76.1°F (24.5°C) and 67.8°F (19.9°C).

Temperature

The transition into December marks the average high-temperature at a still warm 76.1°F (24.5°C), differing minimally from November's 78.8°F (26°C). December's average low-temperature is an enjoyable 67.8°F (19.9°C), reflecting a minor difference from the day's peak temperatures.

Humidity

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

Rainfall

In Biscayne Park, during December, the rain falls for 9.5 days and regularly aggregates up to 0.59" (15mm) of precipitation. Throughout the year, there are 166.7 rainfall days, and 12.91" (328mm) of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 10h and 36min of daylight.
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.

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 health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 5 in December translates into these instructions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Biscayne Park, is 76.1°F (24.5°C), while the low-temperature averages to 67.8°F (19.9°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in October is appraised at 89.6°F (32°C).

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

The average relative humidity in December is 75%.

In December, the rain falls for 9.5 days. Throughout December, 0.59" (15mm) of precipitation is accumulated.

The month with the shortest days is December, with an average of 10h and 36min of daylight.

In December, the average day length is 10h and 33min.

In December, on the first day of the month, 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.

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

In Biscayne Park, the average sunshine duration in December is 6.4h.

The months with the lowest UV index are January and December, with an average maximum UV index of 5.

The average daily maximum UV index in December is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Biscayne Park, FL

  • Average high temperature in December: 76.1°F

The warmest month (with the highest average high temperature) is August (88°F).
The month with the lowest average high temperature is January (73.4°F).

  • Average low temperature in December: 67.8°F

The month with the highest average low temperature is August (82°F).
The coldest month (with the lowest average low temperature) is January (64°F).

Average pressure in December
Biscayne Park, 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
Biscayne Park, FL

  • Average wind speed in December: 10.2mph

The windiest month (with the highest average wind speed) is March (10.8mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).

Average humidity in December
Biscayne Park, 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 (69%).

Average rainfall in December
Biscayne Park, FL

  • Average rainfall in December: 0.59"

The wettest month (with the highest rainfall) is August (2.2").
The driest month (with the least rainfall) is January (0.39").

Average rainfall days in December
Biscayne Park, FL

  • Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is September (21.3 days).
The month with the least rainy days is February (7.5 days).

Average daylight in December /
Average sunshine in December
Biscayne Park, FL

  • Average daylight in December: 10h and 36min

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 24min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

Average sunshine days in December
Biscayne Park, FL

  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is March (20 days).
The month with the least sunshine days is September (5.1 days).

Average UV index in December
Biscayne Park, FL

  • Average UV index in December: 5

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

Average cloud cover in December
Biscayne Park, FL

  • Average cloud cover in December: 32

The month with the most cloud cover is October (Cloud cover 34).
The month with the least cloud cover is April (Cloud cover 26).

Average visibility in December
Biscayne Park, 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).