December weather forecast
Summerland Key, FL

Share

Weather in December

December, the first month of the winter in Summerland Key, is also a moderately hot month, with an average temperature fluctuating between 75.2°F (24°C) and 72.3°F (22.4°C).

Temperature

The advent of December sees the average high-temperature at a still moderately hot 75.2°F (24°C), subtly shifted from November's 77.9°F (25.5°C). Summerland Key's nights throughout December are marked by an average low temperature of 72.3°F (22.4°C), a minor drop from the day's high.

Humidity

In Summerland Key, the average relative humidity in December is 77%.

Rainfall

In December, the rain falls for 11.4 days. Throughout December, 0.87" (22mm) of precipitation is accumulated. Throughout the year, there are 171.1 rainfall days, and 21.54" (547mm) of precipitation is accumulated.

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

With an average of 6.5h of sunshine, December has the least sunshine of the year.

UV index

In December, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 6 transforms into these recommendations:
Deflect overexposure. Sun protection is a necessity. 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. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
[Resources]

Frequently asked questions

What is the usual temperature for Summerland Key in December?

In December, in Summerland Key, the average high-temperature is 75.2°F (24°C), and the average low-temperature is 72.3°F (22.4°C). In October, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 87.8°F (31°C).

What is the average humidity in December in Summerland Key?

The average relative humidity in December in Summerland Key, Florida, is 77%.

How much does it rain in Summerland Key in December?

In Summerland Key, in December, during 11.4 rainfall days, 0.87" (22mm) of precipitation is typically accumulated.

What is the month with the shortest days in Summerland Key?

The month with the shortest days in Summerland Key, Florida, is December, with an average of 10h and 36min of daylight.

How many hours of daylight does Summerland Key have in December?

In December, the average day length in Summerland Key, Florida, is 10h and 38min.

When are sunrise and sunset in December in Summerland Key?

In December, on the first day of the month, sunrise is at 6:53 am and sunset at 5:36 pm. On the last day of the month, in Summerland Key, Florida, sunrise is at 7:09 am and sunset at 5:48 pm EST.

What is the month with the least sunshine in Summerland Key?

December has the least sunshine of the year in Summerland Key, Florida, with an average of 6.5h of sunshine.

How long on average sun shines in December in Summerland Key?

The average sunshine duration in December in Summerland Key, Florida, is 6.5h.

How high is the UV index in December in Summerland Key?

In Summerland Key, the average daily maximum UV index in December is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Summerland Key, FL

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).

[Resources]

Average pressure in December
Summerland Key, FL

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).

[Resources]

Average wind speed in December
Summerland Key, FL

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).

[Resources]

Average humidity in December
Summerland Key, FL

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%).

[Resources]

Average rainfall in December
Summerland Key, FL

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").

[Resources]

Average rainfall days in December
Summerland Key, FL

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).

[Resources]

Average daylight in December /
Average sunshine in December
Summerland Key, FL

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).

[Resources]

Average sunshine days in December
Summerland Key, FL

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).

[Resources]

Average UV index in December
Summerland Key, FL

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).

[Resources]

Average cloud cover in December
Summerland Key, FL

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).

[Resources]

Average visibility in December
Summerland Key, FL

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).

[Resources]

Summerland Key, Florida, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location