December weather forecastCayo Costa, FL
December
Weather in December
December, the first month of the winter in Cayo Costa, is still a warm month, with temperature in the range of an average low of 63.9°F (17.7°C) and an average high of 73.9°F (23.3°C).Temperature
The commencement of December introduces an average high-temperature of a still moderately hot 73.9°F (23.3°C), closely mirroring the preceding month. Cayo Costa cools down to an average low-temperature of 63.9°F (17.7°C) throughout the month of December.Humidity
With an average relative humidity of 77%, December is the most humid month.Rainfall
In Cayo Costa, in December, it is raining for 5.5 days, with typically 0.47" (12mm) of accumulated precipitation. In Cayo Costa, Florida, during the entire year, the rain falls for 122 days and collects up to 8.98" (228mm) of precipitation.Daylight
December has the shortest days of the year, with an average of 10h and 30min of daylight.On the first day of the month, sunrise is at 7:00 am and sunset at 5:35 pm. On the last day of December, sunrise is at 7:17 am and sunset at 5:47 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 6.7h of sunshine.UV index
In December, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In December, a daily maximum UV index of 6 leads to the following instructions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cayo Costa, FL
- Average high temperature in December: 73.9°F
The warmest month (with the highest average high temperature) is August (88°F).
The month with the lowest average high temperature is January (70°F).
- Average low temperature in December: 63.9°F
The month with the highest average low temperature is August (81°F).
The coldest month (with the lowest average low temperature) is January (58.8°F).
Average pressure in December
Cayo Costa, FL
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).
Average wind speed in December
Cayo Costa, FL
- Average wind speed in December: 9.4mph
The windiest months (with the highest average wind speed) are October and November (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in December
Cayo Costa, FL
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is March (72%).
Average rainfall in December
Cayo Costa, FL
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is March (0.16").
Average rainfall days in December
Cayo Costa, FL
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is September (19.5 days).
The month with the least rainy days is February (4.1 days).
Average daylight in December /
Average sunshine in December
Cayo Costa, 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 42min
The month with the most sunshine is May (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
Cayo Costa, FL
- Average sunshine days in December: 23.1 days
The month with the most sunshine days is January (25.1 days).
The month with the least sunshine days is September (7.2 days).
Average UV index in December
Cayo Costa, 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 months with the lowest UV index are January and February (UV index 5).
Average cloud cover in December
Cayo Costa, FL
- Average cloud cover in December: 28
The month with the most cloud cover is January (Cloud cover 29).
The months with the least cloud cover are March and May (Cloud cover 23).
Average visibility in December
Cayo Costa, 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).
