December weather forecastSurfside, FL
December
Weather in December
December, the first month of the winter in Surfside, is also a moderately hot month, with an average temperature fluctuating between 76.1°F (24.5°C) and 67.8°F (19.9°C).Temperature
December's commencement is accompanied by an average high-temperature of a still moderately hot 76.1°F (24.5°C), diverging marginally from November's 78.8°F (26°C). Surfside's nights throughout December are marked by an average low temperature of 67.8°F (19.9°C), a minor drop from the day's high.Humidity
December is the most humid month, with an average relative humidity of 75%.Rainfall
In Surfside, in December, it is raining for 9.5 days, with typically 0.59" (15mm) of accumulated precipitation. Throughout the year, there are 166.7 rainfall days, and 12.91" (328mm) of precipitation is accumulated.Ocean temperature
In Surfside, in December, the average water temperature is 76.5°F (24.7°C).Note: While a person's sensitivity to cold is personal, factors like sunshine, wind, and the temperature can influence their comfort in 76.5°F (24.7°C) waters. Olympians, for perspective, swim in waters between 77°F (25°C) and 82.4°F (28°C).
Daylight
With an average of 10h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:50 am and sunset at 5:28 pm. On the last day of December, sunrise is at 7:07 am and sunset at 5:40 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 6.4h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 5 during December translates into these guidelines:
Be vigilant - Preventing sunburn is recommended. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Surfside, FL
- Average high temperature in December: 76.1°F
The warmest month (with the highest average high temperature) is August (88°F).
The month with the lowest average high temperature is January (73.4°F).
- Average low temperature in December: 67.8°F
The month with the highest average low temperature is August (82°F).
The coldest month (with the lowest average low temperature) is January (64°F).
Average pressure in December
Surfside, FL
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are September and October (29.95"Hg).
Average wind speed in December
Surfside, FL
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is March (10.8mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in December
Surfside, FL
- Average humidity in December: 75%
The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (69%).
Average rainfall in December
Surfside, FL
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is August (2.2").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in December
Surfside, FL
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is September (21.3 days).
The month with the least rainy days is February (7.5 days).
Average sea temperature in December
Surfside, FL
- Average sea temperature in December: 76.4°F
The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (74°F).
Average daylight in December /
Average sunshine in December
Surfside, FL
- Average daylight in December: 10h and 36min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in December: 6h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in December
Surfside, FL
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is March (20 days).
The month with the least sunshine days is September (5.1 days).
Average UV index in December
Surfside, FL
- Average UV index in December: 5
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 5).
Average cloud cover in December
Surfside, FL
- Average cloud cover in December: 32
The month with the most cloud cover is October (Cloud cover 34).
The month with the least cloud cover is April (Cloud cover 26).
Average visibility in December
Surfside, 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).
