Atlantic Beach
Florida, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Atlantic Beach, FL

December, the first month of the winter, in Atlantic Beach, is still a comfortable month, with average temperature varying between 66.2°F (19°C) and 46.4°F (8°C).

Temperature

In December, the average high-temperature slightly decreases, from a warm 73.4°F (23°C) in November, to an enjoyable 66.2°F (19°C). The average low-temperature, in Atlantic Beach, is 46.4°F (8°C).

Rainfall

In Atlantic Beach, in December, during 8 rainfall days, 2.7" (68mm) of precipitation is typically accumulated. In Atlantic Beach, during the entire year, the rain falls for 115 days and collects up to 48.7" (1238mm) of precipitation.

Ocean temperature

In December, the average ocean temperature in Atlantic Beach is 73.4°F (23°C).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 73.4°F (23°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

The month with the shortest days is December, with an average of 10.2h of daylight.

Sunshine

January and December, with an average of 6h of sunshine, are months with the least sunshine in Atlantic Beach.

UV index

Months with the lowest UV index in Atlantic Beach, Florida, are January and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 4 in December transform into the following instructions:
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. 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 Atlantic Beach?

In December, in Atlantic Beach, Florida, the average high-temperature is 66.2°F (19°C), and the average low-temperature is 46.4°F (8°C).

How much does it rain in Atlantic Beach in December?

In December, in Atlantic Beach, the rain falls for 8 days. Throughout December, 2.7" (68mm) of precipitation is accumulated.

How warm is the water in December in Atlantic Beach?

In Atlantic Beach, the average seawater temperature in December is 73.4°F (23°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 73.4°F (23°C) water may be enjoyable.

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

December has the shortest days of the year in Atlantic Beach, Florida, with an average of 10.2h of daylight.

What is the average length of the day in December in Atlantic Beach?

In Atlantic Beach, the average length of the day in December is 10.2h.

What is the month with the least sunshine in Atlantic Beach?

January and December, with an average of 6h of sunshine, are months with the least sunshine in Atlantic Beach.

How long on average sun shines in December in Atlantic Beach?

The average sunshine in December is 6h.

When is the lowest UV index in Atlantic Beach?

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

How high is the UV index in December in Atlantic Beach?

In Atlantic Beach, Florida, the average daily maximum UV index in December is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in December - Atlantic Beach, FL
  • Average high temperature in December: 66°F

Warmest months (with the highest average high temperature) are July and August (90°F).
The month with the lowest average high temperature is January (63°F).

  • Average low temperature in December: 46°F

Months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (43°F).

Average rainfall in December - Atlantic Beach, FL
  • Average rainfall in December: 2.7"

The wettest month (with the highest rainfall) is September (6.7").
The driest month (with the lowest rainfall) is April (2.5").

Average rainfall days in December - Atlantic Beach, FL
  • Average rainfall days in December: 8 days

The month with the highest number of rainy days is August (15 days).
Months with the lowest number of rainy days are April and November (6 days).

Average sea temperature in December - Atlantic Beach, FL
  • Average sea temperature in December: 73°F

The best month for swimming (with the highest average sea temperature) is August (84°F).
Coldest months (with the lowest average sea temperature) are January, February and March (70°F).

Average daylight in December / Average sunshine in December - Atlantic Beach, FL
  • Average daylight in December: 10.2h

The month with the longest days is June (Average daylight: 14.1h).
The month with shortest days is December (Average daylight: 10.2h).

  • Average sunshine in December: 6h

Months with most sunshine are April and May (Average sunshine: 10h).
Months with least sunshine are January and December (Average sunshine: 6).

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

Months with the highest UV index are June and July (UV index 11).
Months with the lowest UV index are January and December (UV index 4).