December weather forecastLongboat Key, FL
December
Weather in December
December, the first month of the winter in Longboat Key, is still a pleasant month, with an average temperature varying between 72.5°F (22.5°C) and 60.8°F (16°C).Temperature
December's advent notes a subtle adjustment in average high-temperature to an agreeable 72.5°F (22.5°C) from November. Longboat Key observes an average low-temperature of 60.8°F (16°C) during December nights.Humidity
December is the most humid month, with an average relative humidity of 76%.Rainfall
In Longboat Key, during December, the rain falls for 9.3 days and regularly aggregates up to 1.97" (50mm) of precipitation. Throughout the year, there are 183.1 rainfall days, and 34.92" (887mm) of precipitation is accumulated.Ocean temperature
In Longboat Key, the average seawater temperature in December is 69.3°F (20.7°C).Note: In 69.3°F (20.7°C), swimming is not an enjoyable activity for most. The challenge of managing one's breathing increases as the temperature goes under 69.8°F (21°C).
Daylight
With an average of 10h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:03 am and sunset at 5:35 pm. On the last day of December, sunrise is at 7:20 am and sunset at 5:47 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 6.5h of sunshine.UV index
In Longboat Key, Florida, the average daily maximum UV index in December is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In December, the maximum UV index of 5 suggests these recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Longboat Key, FL
- Average high temperature in December: 72.5°F
The warmest month (with the highest average high temperature) is August (88.5°F).
The month with the lowest average high temperature is January (68.5°F).
- Average low temperature in December: 60.8°F
The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (56.1°F).
Average pressure in December
Longboat Key, FL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).
Average wind speed in December
Longboat Key, FL
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in December
Longboat Key, FL
- Average humidity in December: 76%
The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are March, April and May (72%).
Average rainfall in December
Longboat Key, FL
- Average rainfall in December: 1.97"
The wettest month (with the highest rainfall) is August (6.42").
The driest months (with the least rainfall) are February and November (1.06").
Average rainfall days in December
Longboat Key, FL
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is August (26.8 days).
The months with the least rainy days are January, February and November (8.3 days).
Average sea temperature in December
Longboat Key, FL
- Average sea temperature in December: 69.2°F
The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (64.1°F).
Average daylight in December /
Average sunshine in December
Longboat Key, FL
- Average daylight in December: 10h and 24min
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 24min).
- Average sunshine in December: 6h and 30min
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 30min).
Average sunshine days in December
Longboat Key, FL
- Average sunshine days in December: 18.9 days
The month with the most sunshine days is January (21.1 days).
The month with the least sunshine days is August (2.5 days).
Average UV index in December
Longboat Key, FL
- Average UV index in December: 5
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).
Average cloud cover in December
Longboat Key, FL
- Average cloud cover in December: 30
The months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 22).
Average visibility in December
Longboat 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).
