December weather forecast
Boca Raton, FL

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The Atlantic ocean surrounding the fantastic city of Boca Raton, Florida
The Atlantic ocean surrounding the fantastic city of Boca Raton, Florida

Weather in December

December officially kicks off the winter season in Boca Raton, marked by its coolest temperature in the year. The decreasing temperature, coupled with shorter daylight hours, corroborates with the Winter Solstice. The city experiences less wind than in November, creating pleasantly chilly weather conditions. Furthermore, cloud coverage increases slightly, contributing to this month's winter-like atmosphere. The amount of rain drops gradually, rounding up the average rainfall to 2.28" (58mm) in December.

Temperature

The arrival of December marks a slight shift to an average high-temperature of a still warm 75.2°F (24°C) from November's 77.9°F (25.5°C). In Boca Raton, the month of December brings a consistent average low-temperature of 68.5°F (20.3°C), slightly cooler than its daytime highs.

Humidity

June and December, with an average relative humidity of 75%, are the most humid months in Boca Raton.

Rainfall

In Boca Raton, in December, during 15.8 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, there are 244.6 rainfall days, and 68.54" (1741mm) of precipitation is accumulated.

Ocean temperature

In Boca Raton, the average seawater temperature in December is 76.1°F (24.5°C).
Note: Individual cold sensitivities, influenced by sunshine, wind, and the ambient temperature, play a role in finding a swim in 76.1°F (24.5°C) water pleasant. (Olympic swimming events mandate water temperatures from 77°F (25°C) to 82.4°F (28°C).)

Daylight

With an average of 10h and 30min of daylight, December has the shortest days of the year in Boca Raton.
On the first day of the month, sunrise is at 6:51 am and sunset at 5:27 pm. On the last day of December, in Boca Raton, sunrise is at 7:08 am and sunset at 5:39 pm EST.

Sunshine

The months with the least sunshine in Boca Raton are January and December, with an average of 6.2h of sunshine.

UV index

In December, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 6 during December morphs into the following directions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Notice! The reflection of water and sand increases the UV radiation significantly.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in December in Boca Raton?

In December, the average high-temperature and low-temperature are 75.2°F (24°C) and 68.5°F (20.3°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in October is estimated at 87.8°F (31°C).

What are the most humid months in Boca Raton?

June and December, with an average relative humidity of 75%, are most humid months in Boca Raton, Florida.

What is the average humidity in December in Boca Raton?

In December, the average relative humidity in Boca Raton, Florida, is 75%.

How much does it rain in Boca Raton in December?

In Boca Raton, during December, the rain falls for 15.8 days and regularly aggregates up to 2.28" (58mm) of precipitation.

What is the water temperature in December in Boca Raton?

In December, the average ocean temperature in Boca Raton is 76.1°F (24.5°C). For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 76.1°F (24.5°C).

What is the month with the shortest days in Boca Raton?

The month with the shortest days in Boca Raton, Florida, is December, with an average of 10h and 30min of daylight.

How many hours of daylight does Boca Raton have in December?

The average day length in December in Boca Raton, Florida, is 10h and 31min.

What time are sunrise and sunset in December in Boca Raton?

On the first day of December in Boca Raton, Florida, sunrise is at 6:51 am and sunset at 5:27 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:39 pm EST.

What are the months with the least sunshine in Boca Raton?

The months with the least sunshine in Boca Raton are January and December, with an average of 6.2h of sunshine.

How long on average sun shines in December in Boca Raton?

In Boca Raton, Florida, the average sunshine duration in December is 6.2h.

What is the UV index reading in December in Boca Raton?

The average daily maximum UV index in December in Boca Raton is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.

Average temperature in December
Boca Raton, FL

Average temperature in December - Boca Raton, FL
  • Average high temperature in December: 75.2°F

The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is January (72.5°F).

  • Average low temperature in December: 68.5°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 (64.2°F).

Average pressure in December
Boca Raton, FL

Average pressure in December - Boca Raton, FL
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).

Average wind speed in December
Boca Raton, FL

Average wind speed in December - Boca Raton, FL
  • Average wind speed in December: 10.9mph

The windiest month (with the highest average wind speed) is March (11.4mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

Average humidity in December
Boca Raton, FL

Average humidity in December - Boca Raton, FL
  • Average humidity in December: 75%

The months with the highest relative humidity are June and December (75%).
The month with the lowest relative humidity is March (70%).

Average rainfall in December
Boca Raton, FL

Average rainfall in December - Boca Raton, FL
  • Average rainfall in December: 2.28"

The wettest month (with the highest rainfall) is August (12.05").
The driest month (with the least rainfall) is January (1.57").

Average rainfall days in December
Boca Raton, FL

Average rainfall days in December - Boca Raton, FL
  • Average rainfall days in December: 15.8 days

The month with the highest number of rainy days is August (29.3 days).
The month with the least rainy days is February (12.7 days).

Average sea temperature in December
Boca Raton, FL

Average sea temperature in December - Boca Raton, FL
  • Average sea temperature in December: 76.1°F

The best month for swimming (with the highest average sea temperature) is August (86.3°F).
The coldest months (with the lowest average sea temperature) are January and February (74.2°F).

Average daylight in December /
Average sunshine in December
Boca Raton, FL

Average daylight in December / Average sunshine in December - Boca Raton, FL
  • Average daylight in December: 10h and 3min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in December: 6h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 12min).

Average sunshine days in December
Boca Raton, FL

Average sunshine days in December - Boca Raton, FL
  • Average sunshine days in December: 12.3 days

The month with the most sunshine days is March (13.3 days).
The month with the least sunshine days is August (0.9 days).

Average UV index in December
Boca Raton, FL

Average UV index in December - Boca Raton, FL
  • Average UV index in December: 6

The 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).

Average cloud cover in December
Boca Raton, FL

Average cloud cover in December - Boca Raton, FL
  • Average cloud cover in December: 35

The month with the most cloud cover is October (Cloud cover 36).
The months with the least cloud cover are March, April, May and July (Cloud cover 29).

Average visibility in December
Boca Raton, FL

Average visibility in December - Boca Raton, 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).

Boca Raton, Florida, USA

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