December weather forecast
Jacksonville, FL

Water geysers at the fountain of Jacksonville in Florida, USA, with the cityscape
Water geysers at the fountain of Jacksonville in Florida, USA, with the cityscape

Weather in December

December, the first month of the winter in Jacksonville, is also an enjoyable month, with an average temperature ranging between min 52.7°F (11.5°C) and max 67.5°F (19.7°C).

Temperature

In Jacksonville, Florida, the average high-temperature in December is almost the same as in November - an enjoyable 67.5°F (19.7°C). In Jacksonville, the average low-temperature is 52.7°F (11.5°C).

Humidity

December is the most humid month, with an average relative humidity of 76%.

Rainfall

In Jacksonville, during December, the rain falls for 11.6 days and regularly aggregates up to 1.89" (48mm) of precipitation. In Jacksonville, during the entire year, the rain falls for 172.6 days and collects up to 25.35" (644mm) of precipitation.

Snowfall

The only month with snowfall in Jacksonville is December. The month with the most snowfall days in Jacksonville, Florida, is December, when snow falls for 0.1 days.

Ocean temperature

In Jacksonville, the average water temperature is 64.9°F (18.3°C).
Note: Swimming in 64.9°F (18.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

With an average of 10h and 14min of daylight, December has the shortest days of the year in Jacksonville.
On the first day of the month, sunrise is at 7:05 am and sunset at 5:25 pm. On the last day of December, in Jacksonville, sunrise is at 7:22 am and sunset at 5:36 pm EST.

Sunshine

December has the least sunshine of the year, with an average of 5.9h of sunshine.

UV index

The average daily maximum UV index in December in Jacksonville is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Jacksonville?

The average high-temperature, in December, in Jacksonville, Florida, is 67.5°F (19.7°C), while the average low-temperature is 52.7°F (11.5°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in October is appraised at 84.2°F (29°C).

What is the most humid month in Jacksonville?

December is the most humid month in Jacksonville, Florida, with an average relative humidity of 76%.

What is the average humidity in December in Jacksonville?

In Jacksonville, the average relative humidity in December is 76%.

How many days does it rain in December in Jacksonville?

In Jacksonville, Florida, in December, it is raining for 11.6 days, with typically 1.89" (48mm) of accumulated precipitation.

What is the snowiest month in Jacksonville?

December has the most snowfall days of the year. Snow falls for 0.1 days.

When does it start snowing in Jacksonville?

December is the first month it typically snows in Jacksonville. Throughout December, there are 0.1 snowfall days.

What is the ocean temperature in December in Jacksonville?

In Jacksonville, in December, the average water temperature is 64.9°F (18.3°C). Swimming in 64.9°F (18.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the month with the shortest days in Jacksonville?

With an average of 10h and 14min of daylight, December has the shortest days of the year.

How many hours of daylight does Jacksonville have in December?

The average day length in December in Jacksonville is 10h and 14min.

What time are sunrise and sunset in December in Jacksonville?

In December, on the first day of the month, sunrise is at 7:05 am and sunset at 5:25 pm. On the last day of the month, in Jacksonville, Florida, sunrise is at 7:22 am and sunset at 5:36 pm EST.

What is the month with the least sunshine in Jacksonville?

The month with the least sunshine in Jacksonville, Florida, is December, with an average of 5.9h of sunshine.

How long on average sun shines in December in Jacksonville?

In December, the average sunshine duration in Jacksonville is 5.9h.

How high is the UV index in December in Jacksonville?

In December, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Jacksonville, FL

Average temperature in December - Jacksonville, FL
  • Average high temperature in December: 67.5°F

The warmest months (with the highest average high temperature) are July and August (91.4°F).
The month with the lowest average high temperature is January (63.1°F).

  • Average low temperature in December: 52.7°F

The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (47.8°F).

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Average pressure in December
Jacksonville, FL

Average pressure in December - Jacksonville, FL
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

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Average wind speed in December
Jacksonville, FL

Average wind speed in December - Jacksonville, FL
  • Average wind speed in December: 6.3mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity in December
Jacksonville, FL

Average humidity in December - Jacksonville, FL
  • Average humidity in December: 76%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is March (69%).

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Average rainfall in December
Jacksonville, FL

Average rainfall in December - Jacksonville, FL
  • Average rainfall in December: 1.89"

The wettest month (with the highest rainfall) is August (3.66").
The driest month (with the least rainfall) is January (1.1").

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Average rainfall days in December
Jacksonville, FL

Average rainfall days in December - Jacksonville, FL
  • Average rainfall days in December: 11.6 days

The month with the highest number of rainy days is August (23.3 days).
The month with the least rainy days is November (9 days).

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Average snowfall days in December
Jacksonville, FL

Average snowfall days in December - Jacksonville, FL
  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in December
Jacksonville, FL

Average sea temperature in December - Jacksonville, FL
  • Average sea temperature in December: 64.9°F

The best month for swimming (with the highest average sea temperature) is August (83.5°F).
The coldest month (with the lowest average sea temperature) is February (60.4°F).

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Average daylight in December /
Average sunshine in December
Jacksonville, FL

Average daylight in December / Average sunshine in December - Jacksonville, FL
  • Average daylight in December: 10h and 14min

The month with the longest days is June (Average daylight: 14h and 4min).
The month with the shortest days is December (Average daylight: 10h and 14min).

  • Average sunshine in December: 5h and 54min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

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Average sunshine days in December
Jacksonville, FL

Average sunshine days in December - Jacksonville, FL
  • Average sunshine days in December: 17.4 days

The month with the most sunshine days is January (18.8 days).
The month with the least sunshine days is August (6.3 days).

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Average UV index in December
Jacksonville, FL

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

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 4).

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Average cloud cover in December
Jacksonville, FL

Average cloud cover in December - Jacksonville, FL
  • Average cloud cover in December: 39

The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is May (Cloud cover 27).

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Average visibility in December
Jacksonville, FL

Average visibility in December - Jacksonville, 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).

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