December weather forecast
Captiva, FL

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Weather in December

December signifies the entry of winter in Captiva, accompanied by a refreshing weather shift. A substantial temperature drop to 73.9°F heralds the closing month of the year. Under the mellow sunshine, daylight hours continue to shorten. Meanwhile, the UV index falls to 6, ensuring cozy and vibrant conditions. Despite being the year's closing month, Captiva's weather serves a delightful endnote to the year-round spectacle.

Temperature

December notes an average high-temperature of a still warm 73.9°F, subtly differing from November's 77.5°F. Captiva sees an average low-temperature of 63.9°F during December.

Humidity

December is the most humid month, with an average relative humidity of 77%.

Rainfall

In Captiva, in December, during 5.5 rainfall days, 0.47" of precipitation is typically accumulated. Throughout the year, there are 122 rainfall days, and 8.98" of precipitation is accumulated.

Ocean temperature

In December, the average ocean temperature is 75.2°F.
Note: For those with a heightened sensitivity to cold, sunshine, wind, and outside temperature make a big difference in enjoying a swim at 75.2°F. (Olympic swimming regulations state a water temperature of 77°F to 82.4°F.)

Daylight

The month with the shortest days in Captiva, Florida, is December, with an average of 10h and 30min of daylight.
On the first day of the month, sunrise is at 6:59 am and sunset at 5:35 pm. On the last day of December, sunrise is at 7:16 am and sunset at 5:46 pm EST.

Sunshine

December has the least sunshine of the year, with an average of 6.7h of sunshine.

UV index

The average daily maximum UV index in December in Captiva is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily high UV index of 6 in December leads to these guidelines:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be alert! The reflection of water and sand augments UV radiation intensity.
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FAQ

What is the average December temperature in Captiva?

Captiva in December has an average high-temperature of 73.9°F and an average low-temperature of 63.9°F. In October, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is computed to be 89.6°F.

What is the most humid month in Captiva?

With an average relative humidity of 77%, December is the most humid month in Captiva.

What is the average humidity in December in Captiva?

In Captiva, Florida, the average relative humidity in December is 77%.

How much does it rain in Captiva in December?

In Captiva, Florida, during December, the rain falls for 5.5 days and regularly aggregates up to 0.47" of precipitation.

How warm is the water in December in Captiva?

In December, the average ocean temperature in Captiva, Florida, is 75.2°F. Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 75.2°F water may be enjoyable.

What is the month with the shortest days in Captiva?

With an average of 10h and 30min of daylight, December has the shortest days of the year in Captiva, Florida.

How many hours of daylight does Captiva have in December?

The average day length in December is 10h and 31min.

When are sunrise and sunset in December in Captiva?

On the first day of December in Captiva, Florida, sunrise is at 6:59 am and sunset at 5:35 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 5:46 pm EST.

What is the month with the least sunshine in Captiva?

December has the least sunshine of the year in Captiva, with an average of 6.7h of sunshine.

How many hours of sunshine does Captiva have in December?

The average sunshine duration in December in Captiva, Florida, is 6.7h.

What is the UV index intensity in December in Captiva?

In December, the average daily maximum UV index in Captiva is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Captiva, FL

Average temperature in December - Captiva, 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).

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Average pressure in December
Captiva, FL

Average pressure in December - Captiva, 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).

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Average wind speed in December
Captiva, FL

Average wind speed in December - Captiva, 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).

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Average humidity in December
Captiva, FL

Average humidity in December - Captiva, 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%).

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Average rainfall in December
Captiva, FL

Average rainfall in December - Captiva, 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").

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Average rainfall days in December
Captiva, FL

Average rainfall days in December - Captiva, 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).

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Average sea temperature in December
Captiva, FL

Average sea temperature in December - Captiva, FL
  • Average sea temperature in December: 75°F

The best month for swimming (with the highest average sea temperature) is August (86°F).
The coldest month (with the lowest average sea temperature) is February (70°F).

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Average daylight in December /
Average sunshine in December
Captiva, FL

Average daylight in December / Average sunshine in December - Captiva, FL
  • Average daylight in December: 10h and 3min

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 4min

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).

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Average sunshine days in December
Captiva, FL

Average sunshine days in December - Captiva, 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).

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Average UV index in December
Captiva, FL

Average UV index in December - Captiva, 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).

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Average cloud cover in December
Captiva, FL

Average cloud cover in December - Captiva, 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).

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Average visibility in December
Captiva, FL

Average visibility in December - Captiva, 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).

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Captiva, Florida, USA

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