Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
The beginning of December reveals an average high-temperature of a still warm 75.2°F (24°C), showing minimal deviation from the previous month. December nights reflect a consistent temperature dip to a pleasant 71.1°F (21.7°C), a slight descent from daytime peaks.Humidity
February, June and December, with an average relative humidity of 76%, are the most humid months.Rainfall
In Key Largo, in December, during 12.5 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. Throughout the year, there are 190.1 rainfall days, and 27.05" (687mm) of precipitation is accumulated.Ocean temperature
In December, the average ocean temperature is 76.3°F (24.6°C).Note: Cold sensitivities vary, but with the right amount of sunshine, a gentle breeze, and a warm day, a swim in 76.3°F (24.6°C) waters might be just right. Remember, Olympic swimmers are used to 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 5:31 pm. On the last day of December, sunrise is at 7:06 am and sunset at 5:43 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 6.4h of sunshine.UV index
In December, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 6 in December translates into this advice:
Resist overexposure. Safeguarding from solar damage is indispensable. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be cautious! Sand and water surfaces make the Sun's UV rays more potent.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the most humid month?
What is the average humidity in December in Key Largo?
How much does it rain in December?
How warm is the water in December?
What is the month with the shortest days?
How many hours of daylight does Key Largo have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December in Key Largo?
How high is the UV index in December?
Average temperature in December
Key Largo, FL
- Average high temperature in December: 75.2°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 (72.7°F).
- Average low temperature in December: 71.1°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 (66.9°F).
Average pressure in December
Key Largo, FL
- Average pressure in December: 30.07"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
Key Largo, FL
- Average wind speed in December: 12.4mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).
Average humidity in December
Key Largo, FL
- Average humidity in December: 76%
The months with the highest relative humidity are February, June and December (76%).
The month with the lowest relative humidity is March (73%).
Average rainfall in December
Key Largo, FL
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is March (0.59").
Average rainfall days in December
Key Largo, FL
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is September (22.9 days).
The month with the least rainy days is February (9.7 days).
Average sea temperature in December
Key Largo, FL
- Average sea temperature in December: 76.3°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
Key Largo, FL
- Average daylight in December: 10h and 4min
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 2min
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
Key Largo, FL
- Average sunshine days in December: 14.9 days
The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is September (5.2 days).
Average UV index in December
Key Largo, 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
Key Largo, FL
- Average cloud cover in December: 33
The month with the most cloud cover is October (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 26).
Average visibility in December
Key Largo, 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).