December weather forecastMarathon Shores, FL
December
Weather in December
The first month of the winter, December, is still a warm month in Marathon Shores, Florida, with temperature in the range of an average high of 75.6°F (24.2°C) and an average low of 71.4°F (21.9°C).Temperature
The shift from November to December is characterized by an average high-temperature of a still moderately hot 75.6°F (24.2°C), not significantly different from the 77.9°F (25.5°C) of November. In Marathon Shores, December nights experience a modest descent in temperature from daily peaks, cooling down to an average of 71.4°F (21.9°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 77%.Rainfall
In Marathon Shores, during December, the rain falls for 12.5 days and regularly aggregates up to 1.06" (27mm) of precipitation. In Marathon Shores, during the entire year, the rain falls for 186.2 days and collects up to 24.45" (621mm) of precipitation.Ocean temperature
In Marathon Shores, the average seawater temperature in December is 75.4°F (24.1°C).Note: Swimming in 75.4°F (24.1°C) waters may not appeal to those sensitive to cold. Yet, the presence of sunshine, the strength of the wind, and the air temperature can alter this experience. Some might even opt for a wetsuit for added comfort.
Daylight
December has the shortest days of the year, with an average of 10h and 36min of daylight.On the first day of the month, sunrise is at 6:52 am and sunset at 5:34 pm. On the last day of December, sunrise is at 7:08 am and sunset at 5:46 pm EST.
Sunshine
With an average of 6.6h of sunshine, December has the least sunshine of the year.UV index
In Marathon Shores, the average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 6 in December interprets into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. 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
Marathon Shores, FL
- Average high temperature in December: 75.6°F
The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is January (72.9°F).
- Average low temperature in December: 71.4°F
The month with the highest average low temperature is August (82.9°F).
The coldest month (with the lowest average low temperature) is January (67.5°F).
Average pressure in December
Marathon Shores, FL
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are September and October (29.94"Hg).
Average wind speed in December
Marathon Shores, FL
- Average wind speed in December: 12.9mph
The windiest month (with the highest average wind speed) is January (13.4mph).
The calmest month (with the lowest average wind speed) is July (9mph).
Average humidity in December
Marathon Shores, FL
- Average humidity in December: 77%
The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is March (73%).
Average rainfall in December
Marathon Shores, FL
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is September (4.21").
The driest month (with the least rainfall) is March (0.43").
Average rainfall days in December
Marathon Shores, FL
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is September (23 days).
The month with the least rainy days is February (10.3 days).
Average sea temperature in December
Marathon Shores, FL
- Average sea temperature in December: 75.3°F
The best month for swimming (with the highest average sea temperature) is August (86.8°F).
The coldest month (with the lowest average sea temperature) is February (72.1°F).
Average daylight in December /
Average sunshine in December
Marathon Shores, FL
- Average daylight in December: 10h and 36min
The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in December: 6h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in December
Marathon Shores, FL
- Average sunshine days in December: 13.8 days
The month with the most sunshine days is March (18 days).
The month with the least sunshine days is September (4.6 days).
Average UV index in December
Marathon Shores, FL
- Average UV index in December: 6
The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The month with the lowest UV index is January (UV index 5).
Average cloud cover in December
Marathon Shores, FL
- Average cloud cover in December: 31
The months with the most cloud cover are January and October (Cloud cover 32).
The month with the least cloud cover is April (Cloud cover 23).
Average visibility in December
Marathon Shores, 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).
