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 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
Weather in December
Temperature
December's average high-temperature is a still warm 75.2°F (24°C), maintaining a close comparison with November's 77.9°F (25.5°C). Summerland Key, during December nights, observes a steady temperature, averaging at a pleasant 72.3°F (22.4°C).Humidity
In December, the average relative humidity in Summerland Key is 77%.Rainfall
In Summerland Key, Florida, in December, it is raining for 11.4 days, with typically 0.87" (22mm) of accumulated precipitation. In Summerland Key, Florida, during the entire year, the rain falls for 171.1 days and collects up to 21.54" (547mm) of precipitation.Daylight
With an average of 10h and 36min of daylight, December has the shortest days of the year in Summerland Key.On the first day of December, sunrise is at 6:53 am and sunset at 5:36 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:48 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 6.5h of sunshine.UV index
In Summerland Key, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the UV index of 6 transforms into the following advice:
Resist extreme sun exposure. Guarding against solar damage is essential. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the average humidity in December?
How many days does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the UV index reading in December?
Average temperature in December
Summerland 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
Summerland 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
Summerland 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
Summerland 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
Summerland 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
Summerland 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 daylight in December /
Average sunshine in December
Summerland Key, FL
- Average daylight in December: 10h and 4min
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 3min
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
Summerland 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
Summerland 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
Summerland 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
Summerland 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).
Summerland Key, Florida, USA
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