December weather forecastIslandia, FL
December
Weather in December
The first month of the winter, December, is also a moderately hot month in Islandia, Florida, with an average temperature varying between 67.1°F (19.5°C) and 76.6°F (24.8°C).Temperature
December's arrival brings an average high-temperature of a still warm 76.6°F (24.8°C), slightly deviating from November's 79.7°F (26.5°C). Islandia's temperature tends to fall to an average low of 67.1°F (19.5°C) during the nights of December.Humidity
The most humid month is December, with an average relative humidity of 75%.Rainfall
In Islandia, in December, it is raining for 14.2 days, with typically 1.3" (33mm) of accumulated precipitation. Throughout the year, in Islandia, there are 225.9 rainfall days, and 40.91" (1039mm) of precipitation is accumulated.Daylight
The month with the shortest days in Islandia is December, with an average of 10h and 36min of daylight.On the first day of the month, sunrise is at 6:50 am and sunset at 5:30 pm. On the last day of December, sunrise is at 7:06 am and sunset at 5:41 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 6.3h of sunshine.UV index
The average daily maximum UV index in December is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.Note: The average daily UV index of 6 in December transforms into the following instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Islandia, FL
- Average high temperature in December: 76.6°F
The warmest month (with the highest average high temperature) is August (88.9°F).
The month with the lowest average high temperature is January (73.9°F).
- Average low temperature in December: 67.1°F
The month with the highest average low temperature is August (81.7°F).
The coldest month (with the lowest average low temperature) is January (63.1°F).
Average pressure in December
Islandia, FL
- Average pressure in December: 30.08"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
Islandia, FL
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is March (10.2mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in December
Islandia, 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 (68%).
Average rainfall in December
Islandia, FL
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is August (6.77").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days in December
Islandia, FL
- Average rainfall days in December: 14.2 days
The month with the highest number of rainy days is August (26.8 days).
The months with the least rainy days are January and February (12.5 days).
Average daylight in December /
Average sunshine in December
Islandia, 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 18min
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 18min).
Average sunshine days in December
Islandia, FL
- Average sunshine days in December: 12.3 days
The month with the most sunshine days is March (14.3 days).
The month with the least sunshine days is August (2.1 days).
Average UV index in December
Islandia, FL
- Average UV index in December: 6
The months with the highest UV index are April, May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 5).
Average cloud cover in December
Islandia, FL
- Average cloud cover in December: 32
The month with the most cloud cover is October (Cloud cover 36).
The month with the least cloud cover is April (Cloud cover 26).
Average visibility in December
Islandia, 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).
