December weather forecast and climate
Treasure Island, FL

The perfect outline of the Treasure Island in Florida
The perfect outline of the Treasure Island in Florida

Weather in December

December, the first month of the winter, in Treasure Island, is also an agreeable month, with average temperature varying between 70.7°F (21.5°C) and 61°F (16.1°C).

Temperature

In Treasure Island, the average high-temperature in December is almost the same as in November - an agreeable 70.7°F (21.5°C). In Treasure Island, the average low-temperature is 61°F (16.1°C).

Humidity

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

Rainfall

In Treasure Island, Florida,, during 6.5 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. In Treasure Island, during the entire year, the rain falls for 122.3 days and collects up to 9.45" (240mm) of precipitation.

Ocean temperature

In Treasure Island, Florida, the average seawater temperature is 68.5°F (20.3°C).
Note: Swimming in 68.5°F (20.3°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 10.4h of daylight, December has the shortest days of the year.

Sunshine

The month with the least sunshine in Treasure Island is December, with an average of 6.6h of sunshine.

UV index

The average daily maximum UV index in December is 5. A UV Index reading of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 5 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 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 Treasure Island?

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

What is the average humidity in December in Treasure Island?

The average relative humidity in December in Treasure Island is 77%.

How many days does it rain in December in Treasure Island?

In Treasure Island, in December, it is raining for 6.5 days, with typically 0.67" (17mm) of accumulated precipitation.

What is the ocean temperature in December in Treasure Island?

In Treasure Island, in December, the average water temperature is 68.5°F (20.3°C). Swimming in 68.5°F (20.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the month with the shortest days in Treasure Island?

With an average of 10.4h of daylight, December has the shortest days of the year in Treasure Island, Florida.

What is the average length of the day in December in Treasure Island?

The average length of the day in December is 10.4h.

What is the month with the least sunshine in Treasure Island?

December has the least sunshine of the year, with an average of 6.6h of sunshine.

How many hours of sunshine does Treasure Island have in December?

In Treasure Island, the average sunshine in December is 6.6h.

How high is the UV index in December in Treasure Island?

In Treasure Island, Florida, the average daily maximum UV index in December is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in December
Treasure Island, FL

Average temperature in December - Treasure Island, FL
  • Average high temperature in December: 70.7°F

The warmest month (with the highest average high temperature) is August (87.8°F).
The month with the lowest average high temperature is January (66.7°F).

  • Average low temperature in December: 61°F

The month with the highest average low temperature is August (80.6°F).
The coldest month (with the lowest average low temperature) is January (56.3°F).

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Average pressure in December
Treasure Island, FL

Average pressure in December - Treasure Island, FL
  • Average pressure in December: 30.1"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is September (29.96").

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Average wind speed in December
Treasure Island, FL

Average wind speed in December - Treasure Island, FL
  • Average wind speed in December: 9.5mph

The windiest months (with the highest average wind speed) are January and November (9.9mph).
The calmest month (with the lowest average wind speed) is July (7mph).

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Average humidity in December
Treasure Island, FL

Average humidity in December - Treasure Island, FL
  • Average humidity in December: 77%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in December
Treasure Island, FL

Average rainfall in December - Treasure Island, FL
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is August (1.85").
The driest month (with the least rainfall) is March (0.12").

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Average rainfall days in December
Treasure Island, FL

Average rainfall days in December - Treasure Island, FL
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is August (18.5 days).
Months with the least rainy days are January, February and March (5.6 days).

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Average sea temperature in December
Treasure Island, FL

Average sea temperature in December - Treasure Island, FL
  • Average sea temperature in December: 68.6°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°F).

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Average daylight in December /
Average sunshine in December
Treasure Island, FL

Average daylight in December / Average sunshine in December - Treasure Island, FL
  • Average daylight in December: 10.4h

The month with the longest days is June (Average daylight: 13.9h).
The month with the shortest days is December (Average daylight: 10.4h).

  • Average sunshine in December: 6.6h

The month with the most sunshine is May (Average sunshine: 11.3h).
The month with the least sunshine is December (Average sunshine: 6.6h).

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Average sunshine days in December
Treasure Island, FL

Average sunshine days in December - Treasure Island, FL
  • Average sunshine days in December: 22.6 days

The month with the most sunshine days is March (24.3 days).
The month with the least sunshine days is August (5.6 days).

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Average UV index in December
Treasure Island, FL

Average UV index in December - Treasure Island, FL
  • Average UV index in December: 5

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
Treasure Island, FL

Average cloud cover in December - Treasure Island, FL
  • Average cloud cover in December: 29

Months with the most cloud cover are January and December (Cloud cover 29).
The month with the least cloud cover is May (Cloud cover 20).

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Average visibility in December
Treasure Island, FL

Average visibility in December - Treasure Island, FL
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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