December weather forecast and climate
South Palm Beach, FL

Weather in December

December, the first month of the winter, in South Palm Beach, is also a moderately hot month, with average temperature ranging between max 75°F (23.9°C) and min 68.2°F (20.1°C).

Temperature

In South Palm Beach, the average high-temperature is almost the same as in November - a still warm 75°F (23.9°C). The average low-temperature, in South Palm Beach, is 68.2°F (20.1°C).

Humidity

Months with the highest humidity in South Palm Beach are June and December, with an average relative humidity of 76%.

Rainfall

In South Palm Beach, during December, the rain falls for 16.5 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, in South Palm Beach, there are 238.3 rainfall days, and 54.53" (1385mm) of precipitation is accumulated.

Ocean temperature

In South Palm Beach, the average seawater temperature is 75.9°F (24.4°C).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 75.9°F (24.4°C) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 77°F (25°C) to 82.4°F (28°C).)

Daylight

December has the shortest days of the year in South Palm Beach, with an average of 10.5h of daylight.

Sunshine

Months with the least sunshine in South Palm Beach, Florida, are January and December, with an average of 6h of sunshine.

UV index

The average daily maximum UV index in South Palm Beach is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the most humid month in South Palm Beach?

June and December, with an average relative humidity of 76%, are most humid months in South Palm Beach, Florida.

What is the average humidity in December in South Palm Beach?

In South Palm Beach, the average relative humidity in December is 76%.

How many days does it rain in December in South Palm Beach?

In South Palm Beach, in December, during 16.5 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.

What is the water temperature in December in South Palm Beach?

In December, the average ocean temperature is 75.9°F (24.4°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 75.9°F (24.4°C) water.

What is the month with the shortest days in South Palm Beach?

With an average of 10.5h of daylight, December has the shortest days of the year.

What is the average length of the day in December in South Palm Beach?

In December, the average length of the day in South Palm Beach is 10.5h.

What is the month with the least sunshine in South Palm Beach?

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

How long on average sun shines in December in South Palm Beach?

In South Palm Beach, the average sunshine in December is 6h.

How high is the UV index in December in South Palm Beach?

In December, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to the Sun's UV rays.

Average temperature in December
South Palm Beach, FL

Average temperature in December - South Palm Beach, FL
  • Average high temperature in December: 75°F

The warmest month (with the highest average high temperature) is August (86.7°F).
The month with the lowest average high temperature is January (72.5°F).

  • Average low temperature in December: 68.2°F

The month with the highest average low temperature is August (81.5°F).
The coldest month (with the lowest average low temperature) is January (64°F).

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Average pressure in December
South Palm Beach, FL

Average pressure in December - South Palm Beach, FL
  • Average pressure in December: 30.09"

The month with the highest atmospheric pressure is January (30.11").
Months with the lowest atmospheric pressure are September and October (29.96").

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Average wind speed in December
South Palm Beach, FL

Average wind speed in December - South Palm Beach, FL
  • Average wind speed in December: 11mph

The windiest month (with the highest average wind speed) is March (11.5mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).

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Average humidity in December
South Palm Beach, FL

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

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

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Average rainfall in December
South Palm Beach, FL

Average rainfall in December - South Palm Beach, FL
  • Average rainfall in December: 2.36"

The wettest month (with the highest rainfall) is August (9.06").
The driest month (with the least rainfall) is January (1.3").

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Average rainfall days in December
South Palm Beach, FL

Average rainfall days in December - South Palm Beach, FL
  • Average rainfall days in December: 16.5 days

The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is February (13.3 days).

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Average sea temperature in December
South Palm Beach, FL

Average sea temperature in December - South Palm Beach, FL
  • Average sea temperature in December: 76°F

The best month for swimming (with the highest average sea temperature) is August (85.7°F).
The coldest month (with the lowest average sea temperature) is January (74.1°F).

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Average daylight in December /
Average sunshine in December
South Palm Beach, FL

Average daylight in December / Average sunshine in December - South Palm Beach, FL
  • Average daylight in December: 10.5h

The month with the longest days is June (Average daylight: 13.8h).
The month with the shortest days is December (Average daylight: 10.5h).

  • Average sunshine in December: 6h

Months with the most sunshine are July and August (Average sunshine: 10.7h).
Months with the least sunshine are January and December (Average sunshine: 6).

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Average sunshine days in December
South Palm Beach, FL

Average sunshine days in December - South Palm Beach, FL
  • Average sunshine days in December: 10.6 days

The month with the most sunshine days is March (12.7 days).
The month with the least sunshine days is July (2.3 days).

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Average UV index in December
South Palm Beach, FL

Average UV index in December - South Palm Beach, FL
  • Average UV index in December: 6

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

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Average cloud cover in December
South Palm Beach, FL

Average cloud cover in December - South Palm Beach, FL
  • Average cloud cover in December: 36

Months with the most cloud cover are January, October, November and December (Cloud cover 36).
Months with the least cloud cover are April and July (Cloud cover 29).

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Average visibility in December
South Palm Beach, FL

Average visibility in December - South Palm Beach, FL
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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