December weather forecast
Longboat Key, FL

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Weather in December

The first month of the winter, December, is also an agreeable month in Longboat Key, Florida, with an average temperature varying between 60.8°F and 72.5°F.

Temperature

Longboat Key, Florida, marks the onset of December with an average high-temperature of an agreeable 72.5°F, a subtle shift from November's 76.3°F. An average low-temperature of 60.8°F marks the month of December.

Humidity

December is the most humid month in Longboat Key, with an average relative humidity of 76%.

Rainfall

In Longboat Key, in December, it is raining for 9.3 days, with typically 1.97" of accumulated precipitation. In Longboat Key, Florida, during the entire year, the rain falls for 183.1 days and collects up to 34.92" of precipitation.

Ocean temperature

In December, the average ocean temperature in Longboat Key is 69.3°F.
Note: Swimming in 69.3°F is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F.

Daylight

The month with the shortest days is December, with an average of 10h and 24min of daylight.
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, in Longboat Key, sunrise is at 7:20 am and sunset at 5:46 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 medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In December, a regular UV index of 5 translates into these guidelines:
Act with care - The suggestion to avoid sunburn is emphasized. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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FAQ

What are the temperatures in Longboat Key in December?

In Longboat Key, in December, the average high-temperature is 72.5°F, and the average low-temperature is 60.8°F. In October, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is estimated at 87.8°F.

What is the most humid month in Longboat Key?

The most humid month in Longboat Key is December, with an average relative humidity of 76%.

What is the average humidity in December in Longboat Key?

In Longboat Key, the average relative humidity in December is 76%.

How much does it rain in Longboat Key in December?

In December, the rain falls for 9.3 days. Throughout December, 1.97" of precipitation is accumulated.

What is the ocean temperature in December in Longboat Key?

In December, the average ocean temperature in Longboat Key is 69.3°F. For swimming, a surface water temperature of 69.3°F is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F.

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

The month with the shortest days in Longboat Key, Florida, is December, with an average of 10h and 24min of daylight.

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

In Longboat Key, the average day length in December is 10h and 27min.

When is the sunrise / sunset in December in Longboat Key?

On the first day of December in Longboat Key, sunrise is at 7:03 am and sunset at 5:35 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:46 pm EST.

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

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

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

In December, the average sunshine duration in Longboat Key, Florida, is 6.5h.

What is the UV index reading in December in Longboat Key?

In December, the average daily maximum UV index in Longboat Key, Florida, is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
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
Longboat Key, FL

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).

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Average pressure in December
Longboat Key, FL

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).

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Average wind speed in December
Longboat Key, FL

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).

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Average humidity in December
Longboat Key, FL

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%).

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Average rainfall in December
Longboat Key, FL

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").

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Average rainfall days in December
Longboat Key, FL

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).

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Average sea temperature in December
Longboat Key, FL

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).

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

Average daylight in December / Average sunshine in December - Longboat Key, FL
  • Average daylight in December: 10h and 2min

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 3min

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).

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Average sunshine days in December
Longboat Key, FL

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).

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Average UV index in December
Longboat Key, FL

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).

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Average cloud cover in December
Longboat Key, FL

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).

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Average visibility in December
Longboat Key, FL

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).

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Longboat Key, Florida, USA

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