December weather forecast
Jacksonville Beach, FL

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A long pier on the scenic blue water and white sand Jacksonville Beach in Florida, with a vast view of the long Atlantic coast
A long pier on the scenic blue water and white sand Jacksonville Beach in Florida, with a vast view of the long Atlantic coast

Weather in December

December, the first month of the winter in Jacksonville Beach, is still a refreshing month, with an average temperature fluctuating between 67.1°F (19.5°C) and 55.4°F (13°C).

Temperature

During December, Jacksonville Beach observes a subtle ascent to a refreshing 67.1°F (19.5°C) from November's 71.2°F (21.8°C) in the average high-temperature. An average low-temperature of 55.4°F (13°C) is observed during December nights.

Humidity

The months with the highest humidity in Jacksonville Beach are August and December, with an average relative humidity of 76%.

Rainfall

In December, in Jacksonville Beach, Florida, the rain falls for 11.9 days. Throughout December, 1.93" (49mm) of precipitation is accumulated. Throughout the year, there are 185.5 rainfall days, and 31.54" (801mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Jacksonville Beach are January and December. The months with the most snowfall days in Jacksonville Beach are January and December, with an average of 0.1 snowfall days.

Ocean temperature

In Jacksonville Beach, in December, the average water temperature is 64.9°F (18.3°C).
Note: In water with a temperature of 64.9°F (18.3°C), swimming is not a joy for most people. The challenge of controlling breathing increases as the temperature dips from 69.8°F (21°C) to 59°F (15°C).

Daylight

The month with the shortest days in Jacksonville Beach is December, with an average of 10h and 12min of daylight.
On the first day of December, sunrise is at 7:04 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:35 pm EST.

Sunshine

The months with the least sunshine in Jacksonville Beach are January and December, with an average of 5.9h of sunshine.

UV index

The months with the lowest UV index in Jacksonville Beach are January and December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 4 in December transforms into the following instructions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

What is the average December temperature in Jacksonville Beach?

The high-temperature, in December, in Jacksonville Beach, is 67.1°F (19.5°C), while the low-temperature averages to 55.4°F (13°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in September is estimated at 96.8°F (36°C).

What is the most humid month in Jacksonville Beach?

The months with the highest humidity in Jacksonville Beach are August and December, with an average relative humidity of 76%.

What is the average humidity in December in Jacksonville Beach?

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

How many days does it rain in December in Jacksonville Beach?

In Jacksonville Beach, Florida, during December, the rain falls for 11.9 days and regularly aggregates up to 1.93" (49mm) of precipitation.

What is the snowiest month in Jacksonville Beach?

The months with the most snowfall days in Jacksonville Beach, Florida, are January and December, with an average of 0.1 snowfall days.

When does it start to snow in Jacksonville Beach?

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

What is the ocean temperature in December in Jacksonville Beach?

In Jacksonville Beach, in December, the average water temperature is 64.9°F (18.3°C). For swimming, a surface water temperature of 64.9°F (18.3°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

What is the month with the shortest days in Jacksonville Beach?

December has the shortest days of the year in Jacksonville Beach, with an average of 10h and 12min of daylight.

How many hours of daylight does Jacksonville Beach have in December?

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

What time are sunrise and sunset in December in Jacksonville Beach?

On the first day of December in Jacksonville Beach, sunrise is at 7:04 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:35 pm EST.

What are the months with the least sunshine in Jacksonville Beach?

The months with the least sunshine are January and December, with an average of 5.9h of sunshine.

How many hours of sunshine does Jacksonville Beach have in December?

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

When is the lowest UV index in Jacksonville Beach?

The months with the lowest UV index in Jacksonville Beach are January and December, with an average maximum UV index of 4.

What is the UV index intensity in December in Jacksonville Beach?

The average daily maximum UV index in December is 4. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Jacksonville Beach, FL

Average temperature in December - Jacksonville Beach, FL
  • Average high temperature in December: 67.1°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (63.3°F).

  • Average low temperature in December: 55.4°F

The months with the highest average low temperature are July and August (77.5°F).
The coldest month (with the lowest average low temperature) is January (50.4°F).

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Average pressure in December
Jacksonville Beach, FL

Average pressure in December - Jacksonville Beach, 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 August and September (29.98"Hg).

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Average wind speed in December
Jacksonville Beach, FL

Average wind speed in December - Jacksonville Beach, FL
  • Average wind speed in December: 8.1mph

The windiest months (with the highest average wind speed) are January, March, April, October and November (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

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Average humidity in December
Jacksonville Beach, FL

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

The months with the highest relative humidity are August and December (76%).
The month with the lowest relative humidity is March (70%).

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Average rainfall in December
Jacksonville Beach, FL

Average rainfall in December - Jacksonville Beach, FL
  • Average rainfall in December: 1.93"

The wettest month (with the highest rainfall) is August (4.8").
The driest month (with the least rainfall) is January (1.3").

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Average rainfall days in December
Jacksonville Beach, FL

Average rainfall days in December - Jacksonville Beach, FL
  • Average rainfall days in December: 11.9 days

The month with the highest number of rainy days is August (25.3 days).
The month with the least rainy days is February (9.8 days).

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Average snowfall days in December
Jacksonville Beach, FL

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

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

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Average sea temperature in December
Jacksonville Beach, FL

Average sea temperature in December - Jacksonville Beach, FL
  • Average sea temperature in December: 64.8°F

The best month for swimming (with the highest average sea temperature) is August (83.2°F).
The coldest months (with the lowest average sea temperature) are January and February (60.7°F).

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

Average daylight in December / Average sunshine in December - Jacksonville Beach, FL
  • Average daylight in December: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in December: 5h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).

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Average sunshine days in December
Jacksonville Beach, FL

Average sunshine days in December - Jacksonville Beach, FL
  • Average sunshine days in December: 16.6 days

The month with the most sunshine days is January (18.8 days).
The month with the least sunshine days is August (4.2 days).

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Average UV index in December
Jacksonville Beach, FL

Average UV index in December - Jacksonville Beach, FL
  • Average UV index in December: 4

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 4).

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Average cloud cover in December
Jacksonville Beach, FL

Average cloud cover in December - Jacksonville Beach, FL
  • Average cloud cover in December: 38

The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is May (Cloud cover 26).

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Average visibility in December
Jacksonville Beach, FL

Average visibility in December - Jacksonville Beach, 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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Jacksonville Beach, Florida, USA

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