December weather forecast
West Palm Beach, FL

Tall, beautiful buildings reflected in the waterway in West Palm Beach, Florida
Tall, beautiful buildings reflected in the waterway in West Palm Beach, Florida

Weather in December

December, the first month of the winter, in West Palm Beach, is also a moderately hot month, with average temperature varying between 68°F (20°C) and 74.8°F (23.8°C).

Temperature

In West Palm Beach, the average high-temperature is almost the same as in November - a still warm 74.8°F (23.8°C). The average low-temperature, in December, is 68°F (20°C).

Humidity

The average relative humidity in West Palm Beach is 75%.

Rainfall

In West Palm Beach, it is raining for 11.1 days, with typically 0.87" (22mm) of accumulated precipitation. In West Palm Beach, Florida, during the entire year, the rain falls for 193.9 days and collects up to 22.56" (573mm) of precipitation.

Ocean temperature

In December, the average ocean temperature in West Palm Beach 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

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

Sunshine

Months with the least sunshine are January and December, with an average of 6.1h of sunshine.

UV index

The average daily maximum UV index in West Palm Beach is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from the exposure to the Sun's UV radiation for the average person.
Note: In December, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.
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FAQ

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

In West Palm Beach, the average relative humidity in December is 75%.

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

In West Palm Beach, in December, during 11.1 rainfall days, 0.87" (22mm) of precipitation is typically accumulated.

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

In December, the average ocean temperature in West Palm Beach, Florida, 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 West Palm Beach?

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

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

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

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

January and December, with an average of 6.1h of sunshine, are months with the least sunshine.

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

In West Palm Beach, Florida, the average sunshine in December is 6.1h.

What is the UV index intensity in December in West Palm Beach?

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

Average temperature in December
West Palm Beach, FL

Average temperature in December - West Palm Beach, FL
  • Average high temperature in December: 74.8°F

The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is January (72°F).

  • Average low temperature in December: 68°F

The month with the highest average low temperature is August (81.3°F).
The coldest month (with the lowest average low temperature) is January (64.2°F).

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Average pressure in December
West Palm Beach, FL

Average pressure in December - West 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
West Palm Beach, FL

Average wind speed in December - West Palm Beach, FL
  • Average wind speed in December: 11.3mph

The windiest month (with the highest average wind speed) is March (11.8mph).
The calmest month (with the lowest average wind speed) is July (8mph).

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Average humidity in December
West Palm Beach, FL

Average humidity in December - West Palm Beach, FL
  • Average humidity in December: 75%

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

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Average rainfall in December
West Palm Beach, FL

Average rainfall in December - West Palm Beach, FL
  • Average rainfall in December: 0.87"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (0.51").

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Average rainfall days in December
West Palm Beach, FL

Average rainfall days in December - West Palm Beach, FL
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is September (25 days).
The month with the least rainy days is February (9.3 days).

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Average sea temperature in December
West Palm Beach, FL

Average sea temperature in December - West 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
West Palm Beach, FL

Average daylight in December / Average sunshine in December - West 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: 6.1h

The month with the most sunshine is July (Average sunshine: 11h).
Months with the least sunshine are January and December (Average sunshine: 6.1).

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Average sunshine days in December
West Palm Beach, FL

Average sunshine days in December - West Palm Beach, FL
  • Average sunshine days in December: 16 days

The month with the most sunshine days is January (18.2 days).
The month with the least sunshine days is August (3.5 days).

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Average UV index in December
West Palm Beach, FL

Average UV index in December - West 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).
Months with the lowest UV index are January and February (UV index 5).

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Average cloud cover in December
West Palm Beach, FL

Average cloud cover in December - West Palm Beach, FL
  • Average cloud cover in December: 35

Months with the most cloud cover are January, November and December (Cloud cover 35).
Months with the least cloud cover are May, July and August (Cloud cover 28).

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Average visibility in December
West Palm Beach, FL

Average visibility in December - West 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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