December weather forecastDeerfield Beach, FL
December
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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: 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: 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: 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: 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: 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: 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: 10h and 30min
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 12min
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: 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: 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: 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: 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).
