December weather forecast and climate
Belleair, FL

The first month of the winter, December, is also an agreeable month in Belleair, Florida, with average temperature varying between 60.6°F (15.9°C) and 70.3°F (21.3°C).

Temperature

In Belleair, the average high-temperature is relatively the same as in November - an agreeable 70.3°F (21.3°C). The average low-temperature, in Belleair, is 60.6°F (15.9°C).

Humidity

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

Rainfall

In December, in Belleair, the rain falls for 7.4 days. Throughout December, 0.83" (21mm) of precipitation is accumulated. Throughout the year, there are 149.9 rainfall days, and 16.18" (411mm) of precipitation is accumulated.

Ocean temperature

In Belleair, in December, the average water temperature is 68.5°F (20.3°C).
Note: For most, swimming in 68.5°F (20.3°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

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

Sunshine

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

UV index

In Belleair, the average daily maximum UV index in December is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in December in Belleair?

The average high-temperature, in December, in Belleair, Florida, is 70.3°F (21.3°C), while the average low-temperature is 60.6°F (15.9°C).

What is the most humid month in Belleair?

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

What is the average humidity in December in Belleair?

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

How much does it rain in Belleair in December?

In Belleair, Florida, in December, during 7.4 rainfall days, 0.83" (21mm) of precipitation is typically accumulated.

What is the ocean temperature in December in Belleair?

In Belleair, Florida, the average seawater temperature in December is 68.5°F (20.3°C). For most, swimming in 68.5°F (20.3°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

What is the month with the shortest days in Belleair?

The month with the shortest days is December, with an average of 10.4h of daylight.

How many hours of daylight does Belleair have in December?

In Belleair, the average length of the day in December is 10.4h.

What is the month with the least sunshine in Belleair?

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

How many hours of sunshine does Belleair have in December?

In Belleair, Florida, the average sunshine in December is 6.5h.

What is the UV index reading in December in Belleair?

In Belleair, Florida, the average daily maximum UV index in December is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.
Average temperature in December - Belleair, FL
  • Average high temperature in December: 70.3°F

The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is January (65.8°F).

  • Average low temperature in December: 60.6°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 (55.9°F).

Average pressure in December - Belleair, FL
  • Average pressure in December: 30.1"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is September (29.96").

Average wind speed in December - Belleair, FL
  • Average wind speed in December: 9.4mph

The windiest months (with the highest average wind speed) are January and March (9.8mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

Average humidity in December - Belleair, 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%).

Average rainfall in December - Belleair, FL
  • Average rainfall in December: 0.83"

The wettest month (with the highest rainfall) is August (3.07").
The driest month (with the least rainfall) is March (0.39").

Average rainfall days in December - Belleair, FL
  • Average rainfall days in December: 7.4 days

The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is February (6.7 days).

Average sea temperature in December - Belleair, 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).

Average daylight in December / Average sunshine in December - Belleair, 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: 6.5h

The month with the most sunshine is May (Average sunshine: 11.3h).
The month with the least sunshine is December (Average sunshine: 6.5h).

Average sunshine days in December - Belleair, FL
  • Average sunshine days in December: 21.5 days

The month with the most sunshine days is January (22.8 days).
The month with the least sunshine days is August (5 days).

Average UV index in December - Belleair, 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).

Average cloud cover in December - Belleair, FL
  • Average cloud cover in December: 30

Months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 20).

Average visibility in December - Belleair, 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).