December weather forecast
Deerfield Beach, FL

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The calm sea and white sand of the famous Deerfield Beach in Florida
The calm sea and white sand of the famous Deerfield Beach in Florida

Weather in December

Deerfield Beach, Florida, ushers in December with relatively milder temperatures with the average low temperature resting at 68.4°F (20.2°C). Despite it being the last month of the year, the warmer coastal climate maintains characteristically mild winter days. The decrease in rainfall accumulation makes for crisp, dry days ideal for outdoor activities. During this welcome transition, the consistent wind speed of 10.9mph (17.5km/h) provides a pleasantly cool breeze. The year's end in Deerfield Beach offers a blend of mild winter days and slightly cool nights, making it a favorite winter getaway destination.

Temperature

The onset of December in Deerfield Beach brings an average high-temperature of a still warm 75.2°F (24°C), nearly matching the November temperature. December in Deerfield Beach is characterized by a steady nighttime low-temperature of 68.4°F (20.2°C).

Humidity

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

Rainfall

In December, the rain falls for 16.5 days. Throughout December, 2.32" (59mm) of precipitation is accumulated. Throughout the year, there are 243.5 rainfall days, and 53.31" (1354mm) of precipitation is accumulated.

Ocean temperature

In Deerfield Beach, in December, the average water temperature is 76.1°F (24.5°C).
Note: Imagine a swim in 76.1°F (24.5°C) waters. How you'd feel depends on your cold sensitivity, the sun's rays, the caress of the wind, and the warmth enveloping you. Comparatively, Olympic swimmers train in waters between 77°F (25°C) and 82.4°F (28°C).

Daylight

With an average of 10h and 30min of daylight, December has the shortest days of the year in Deerfield Beach.
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, sunrise is at 7:08 am and sunset at 5:39 pm EST.

Sunshine

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

UV index

The average daily maximum UV index in December is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 in December converts into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Caution! The Sun's UV intensity grows with reflections off sand and water.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Deerfield Beach in December?

The high-temperature, in December, in Deerfield Beach, records 75.2°F (24°C), while the low-temperature is 68.4°F (20.2°C). The average heat index (a.k.a. 'real feel', 'feels like'), 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 Deerfield Beach?

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

What is the average humidity in December in Deerfield Beach?

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

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

In Deerfield Beach, in December, during 16.5 rainfall days, 2.32" (59mm) of precipitation is typically accumulated.

What is the water temperature in December in Deerfield Beach?

In December, the average ocean temperature in Deerfield Beach is 76.1°F (24.5°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 76.1°F (24.5°C) water may be enjoyable.

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

With an average of 10h and 30min of daylight, December has the shortest days of the year.

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

In Deerfield Beach, the average day length in December is 10h and 31min.

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

In December, on the first day of the month, sunrise is at 6:51 am and sunset at 5:27 pm. On the last day of the month, in Deerfield Beach, sunrise is at 7:08 am and sunset at 5:39 pm EST.

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

The months with the least sunshine in Deerfield Beach, Florida, are January and December, with an average of 6.2h of sunshine.

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

The average sunshine duration in December in Deerfield Beach is 6.2h.

What is the UV index reading in December in Deerfield Beach?

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

Average temperature in December
Deerfield Beach, FL

Average temperature in December - Deerfield Beach, 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: 68.4°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
Deerfield Beach, FL

Average pressure in December - Deerfield Beach, 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
Deerfield Beach, FL

Average wind speed in December - Deerfield Beach, 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
Deerfield Beach, FL

Average humidity in December - Deerfield Beach, 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
Deerfield Beach, FL

Average rainfall in December - Deerfield Beach, FL
  • Average rainfall in December: 2.32"

The wettest month (with the highest rainfall) is August (8.35").
The driest month (with the least rainfall) is January (1.38").

Average rainfall days in December
Deerfield Beach, FL

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

The month with the highest number of rainy days is August (28 days).
The month with the least rainy days is February (13 days).

Average sea temperature in December
Deerfield Beach, FL

Average sea temperature in December - Deerfield Beach, 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
Deerfield Beach, FL

Average daylight in December / Average sunshine in December - Deerfield Beach, 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
Deerfield Beach, FL

Average sunshine days in December - Deerfield Beach, FL
  • Average sunshine days in December: 10.2 days

The month with the most sunshine days is March (12.1 days).
The months with the least sunshine days are July and August (1.7 days).

Average UV index in December
Deerfield Beach, FL

Average UV index in December - Deerfield Beach, 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
Deerfield Beach, FL

Average cloud cover in December - Deerfield Beach, 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 April and July (Cloud cover 28).

Average visibility in December
Deerfield Beach, FL

Average visibility in December - Deerfield 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).

Deerfield Beach, Florida, USA

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