December weather forecastBig Coppitt Key, FL
December
Weather in December
December, the first month of the winter in Big Coppitt Key, is still a warm month, with an average temperature ranging between min 72.3°F (22.4°C) and max 75.2°F (24°C).Temperature
The commencement of December notes an average high-temperature of a still warm 75.2°F (24°C), exhibiting little difference from the previous month. A modest decline from daytime high temperatures is noticed in December, marking the average low at a pleasant 72.3°F (22.4°C).Humidity
In December, the average relative humidity is 77%.Rainfall
In Big Coppitt Key, during December, the rain falls for 11.4 days and regularly aggregates up to 0.87" (22mm) of precipitation. In Big Coppitt Key, during the entire year, the rain falls for 171.1 days and collects up to 21.54" (547mm) of precipitation.Ocean temperature
In December, the average ocean temperature in Big Coppitt Key is 74.5°F (23.6°C).Note: Individual cold sensitivities, influenced by sunshine, wind, and the ambient temperature, play a role in finding a swim in 74.5°F (23.6°C) water pleasant. (Olympic swimming events mandate water temperatures from 77°F (25°C) to 82.4°F (28°C).)
Daylight
December has the shortest days of the year in Big Coppitt Key, with an average of 10h and 36min of daylight.On the first day of the month, sunrise is at 6:54 am and sunset at 5:37 pm. On the last day of December, sunrise is at 7:10 am and sunset at 5:49 pm EST.
Sunshine
With an average of 6.5h of sunshine, December has the least sunshine of the year.UV index
In Big Coppitt Key, 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 unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 6 in December translates into these instructions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Take note! The UV strength of the Sun elevates when reflected off water and sand.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Big Coppitt Key, FL
- Average high temperature in December: 75.2°F
The warmest month (with the highest average high temperature) is August (85.3°F).
The month with the lowest average high temperature is January (72.7°F).
- Average low temperature in December: 72.3°F
The month with the highest average low temperature is August (83.1°F).
The coldest month (with the lowest average low temperature) is January (68.5°F).
Average pressure in December
Big Coppitt Key, FL
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are September and October (29.93"Hg).
Average wind speed in December
Big Coppitt Key, FL
- Average wind speed in December: 13.8mph
The windiest month (with the highest average wind speed) is November (14.4mph).
The calmest month (with the lowest average wind speed) is July (9.4mph).
Average humidity in December
Big Coppitt Key, FL
- Average humidity in December: 77%
The month with the highest relative humidity is February (78%).
The months with the lowest relative humidity are July, August and September (74%).
Average rainfall in December
Big Coppitt Key, FL
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is September (3.54").
The driest month (with the least rainfall) is March (0.43").
Average rainfall days in December
Big Coppitt Key, FL
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is September (20.8 days).
The month with the least rainy days is March (9.4 days).
Average sea temperature in December
Big Coppitt Key, FL
- Average sea temperature in December: 74.5°F
The best month for swimming (with the highest average sea temperature) is August (86.9°F).
The coldest months (with the lowest average sea temperature) are January and February (71.2°F).
Average daylight in December /
Average sunshine in December
Big Coppitt Key, 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 30min
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 30min).
Average sunshine days in December
Big Coppitt Key, FL
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is March (19.6 days).
The month with the least sunshine days is September (6.2 days).
Average UV index in December
Big Coppitt Key, 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
Big Coppitt Key, FL
- Average cloud cover in December: 32
The month with the most cloud cover is January (Cloud cover 34).
The month with the least cloud cover is April (Cloud cover 23).
Average visibility in December
Big Coppitt Key, 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).
