December weather forecast
San Blas, FL

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Weather in December

December, the first month of the winter in San Blas, is still a comfortable month, with an average temperature fluctuating between 53.2°F (11.8°C) and 63.9°F (17.7°C).

Temperature

San Blas records an average high-temperature of a comfortable 63.9°F (17.7°C) in December, maintaining a close correlation with November's 68.9°F (20.5°C). San Blas experiences an average low-temperature of 53.2°F (11.8°C) in month of December.

Humidity

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

Rainfall

In San Blas, in December, it is raining for 11.7 days, with typically 3.5" (89mm) of accumulated precipitation. In San Blas, during the entire year, the rain falls for 164.8 days and collects up to 36.77" (934mm) of precipitation.

Daylight

With an average of 10h and 12min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 6:21 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 4:53 pm CST.

Sunshine

February and December, with an average of 5.7h of sunshine, are months with the least sunshine.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 4 during December leads to these instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Updated: Jul 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average December temperature?

The average high-temperature, in December, in San Blas, is 63.9°F (17.7°C), while the average low-temperature is 53.2°F (11.8°C). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is calculated to be 95°F (35°C).

What is the most humid month?

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

What is the average humidity in December?

In December, the average relative humidity is 77%.

How many days does it rain in December?

In December, the rain falls for 11.7 days. Throughout December, 3.5" (89mm) of precipitation is accumulated.

What is the month with the shortest days?

With an average of 10h and 12min of daylight, December has the shortest days of the year.

What is the average length of the day in December in San Blas?

In December, the average day length is 10h and 15min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 6:21 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 4:53 pm CST.

What are the months with the least sunshine?

February and December, with an average of 5.7h of sunshine, are months with the least sunshine.

How many hours of sunshine does San Blas have in December?

In December, the average sunshine duration is 5.7h.

What are the months with the lowest UV index?

The months with the lowest UV index are January, February and December, with an average maximum UV index of 4.

How high is the UV index in December?

In San Blas, the average daily maximum UV index in December is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
San Blas, FL

Average temperature in December - San Blas, FL
  • Average high temperature in December: 63.9°F

The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is January (60.3°F).

  • Average low temperature in December: 53.2°F

The months with the highest average low temperature are July and August (79.9°F).
The coldest month (with the lowest average low temperature) is January (48.7°F).

Average pressure in December
San Blas, FL

Average pressure in December - San Blas, FL
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

Average wind speed in December
San Blas, FL

Average wind speed in December - San Blas, FL
  • Average wind speed in December: 9.7mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest months (with the lowest average wind speed) are August and September (7.5mph).

Average humidity in December
San Blas, FL

Average humidity in December - San Blas, 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 (70%).

Average rainfall in December
San Blas, FL

Average rainfall in December - San Blas, FL
  • Average rainfall in December: 3.5"

The wettest month (with the highest rainfall) is August (5.47").
The driest month (with the least rainfall) is November (1.61").

Average rainfall days in December
San Blas, FL

Average rainfall days in December - San Blas, FL
  • Average rainfall days in December: 11.7 days

The month with the highest number of rainy days is August (24 days).
The month with the least rainy days is November (8.5 days).

Average daylight in December /
Average sunshine in December
San Blas, FL

Average daylight in December / Average sunshine in December - San Blas, FL
  • Average daylight in December: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in December: 5h and 4min

The months with the most sunshine are May and June (Average sunshine: 11h and 6min).
The months with the least sunshine are February and December (Average sunshine: 5h and 42min).

Average sunshine days in December
San Blas, FL

Average sunshine days in December - San Blas, FL
  • Average sunshine days in December: 17.6 days

The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is August (5.6 days).

Average UV index in December
San Blas, FL

Average UV index in December - San Blas, FL
  • Average UV index in December: 4

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).

Average cloud cover in December
San Blas, FL

Average cloud cover in December - San Blas, FL
  • Average cloud cover in December: 38

The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is May (Cloud cover 21).

Average visibility in December
San Blas, FL

Average visibility in December - San Blas, 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).

San Blas, Florida, USA

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