December weather forecast
Longboat Key, FL

Weather in December

The first month of the winter, December, is still a pleasant month in Longboat Key, Florida, with an average temperature ranging between min 60.8°F (16°C) and max 72.5°F (22.5°C).

Temperature

In Longboat Key, the average high-temperature in December is relatively the same as in November - an agreeable 72.5°F (22.5°C). In December, in Longboat Key, the average low-temperature is 60.8°F (16°C).

Humidity

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

Rainfall

In Longboat Key, Florida, it is raining for 9.3 days, with typically 1.97" (50mm) of accumulated precipitation. In Longboat Key, during the entire year, the rain falls for 183.1 days and collects up to 34.92" (887mm) of precipitation.

Ocean temperature

In Longboat Key, Florida, the average seawater temperature in December is 69.3°F (20.7°C).
Note: Swimming in 69.3°F (20.7°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

With an average of 10h and 27min of daylight, December has the shortest days of the year.
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.

Sunshine

The month with the least sunshine in Longboat Key is December, with an average of 6.5h of sunshine.

UV index

In Longboat Key, the average daily maximum UV index in December is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 5 in December interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

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 many days does it rain in December in Longboat Key?

In December, the rain falls for 9.3 days. Throughout December, 1.97" (50mm) of precipitation is accumulated.

How cold is the water in December in Longboat Key?

In December, the average ocean temperature in Longboat Key is 69.3°F (20.7°C). For swimming, a surface water temperature of 69.3°F (20.7°C) 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 (21°C).

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

With an average of 10h and 27min of daylight, December has the shortest days of the year.

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

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

What time are sunrise and 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, 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 intensity in December in Longboat Key?

In December, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.

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 27min

The month with the longest days is June (Average daylight: 13h and 51min).
The month with the shortest days is December (Average daylight: 10h and 27min).

  • 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).

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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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