December weather forecast
San Carlos, Cuba

December

Weather in December

December, the first month of the winter in San Carlos, is still a warm month, with an average temperature varying between 28.3°C (82.9°F) and 21.2°C (70.2°F).

Temperature

The average high-temperature during December registers at a still moderately hot 28.3°C (82.9°F), maintaining a close resemblance to the previous month. An average temperature of 21.2°C (70.2°F) marks the nights in December.

Heat index

Throughout December, the heat index is computed to be a tropical 33°C (91.4°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

The average relative humidity in December is 80%.

Rainfall

In San Carlos, in December, it is raining for 11.9 days, with typically 24mm (0.94") of accumulated precipitation. Throughout the year, there are 209 rainfall days, and 646mm (25.43") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 10h and 54min of daylight.
On the first day of the month, sunrise is at 06:19 and sunset at 17:19. On the last day of December, sunrise is at 06:35 and sunset at 17:32 CST.

Sunshine

In San Carlos, Cuba, the average sunshine in December is 7.2h.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A daily maximum UV index of 6 in December translates into the following instructions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.

Frequently asked questions

How hot is it in December?
In San Carlos, in December, the average high-temperature is 28.3°C (82.9°F), and the average low-temperature is 21.2°C (70.2°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, in December is computed to be 33°C (91.4°F).
What is the average humidity in December?
In San Carlos, the average relative humidity in December is 80%.
How much does it rain in December?
In December, the rain falls for 11.9 days. Throughout December, 24mm (0.94") of precipitation is accumulated.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 10h and 54min of daylight.
How many hours of daylight does San Carlos have in December?
The average day length in December is 10h and 56min.
When is the sunrise / sunset in December?
On the first day of December, sunrise is at 06:19 and sunset at 17:19. On the last day of the month, sunrise is at 06:35 and sunset at 17:32 CST.
How long on average sun shines in December?
In San Carlos, the average sunshine duration in December is 7.2h.
What is the month with the lowest UV index?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 6.
What is the UV index reading in December?
In San Carlos, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
San Carlos, Cuba
  • Average high temperature in December: 28.3°C

The warmest month (with the highest average high temperature) is August (31.8°C).
The month with the lowest average high temperature is January (27.9°C).

  • Average low temperature in December: 21.2°C

The month with the highest average low temperature is August (24.1°C).
The coldest month (with the lowest average low temperature) is February (20°C).

Average pressure in December
San Carlos, Cuba
  • Average pressure in December: 1015.4mbar

The month with the highest atmospheric pressure is January (1016.5mbar).
The month with the lowest atmospheric pressure is October (1012mbar).

Average wind speed in December
San Carlos, Cuba
  • Average wind speed in December: 9.8km/h

The windiest months (with the highest average wind speed) are February and December (9.8km/h).
The calmest months (with the lowest average wind speed) are September and October (7.4km/h).

Average humidity in December
San Carlos, Cuba
  • Average humidity in December: 80%

The month with the highest relative humidity is October (82%).
The month with the lowest relative humidity is March (75%).

Average rainfall in December
San Carlos, Cuba
  • Average rainfall in December: 24mm

The wettest months (with the highest rainfall) are May and September (95mm).
The driest month (with the least rainfall) is February (15mm).

Average rainfall days in December
San Carlos, Cuba
  • Average rainfall days in December: 11.9 days

The month with the highest number of rainy days is October (23.9 days).
The month with the least rainy days is February (9 days).

Average daylight in December /
Average sunshine in December
San Carlos, Cuba
  • Average daylight in December: 10h and 5min

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 10h and 54min).

  • Average sunshine in December: 7h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 7h and 0min).

Average sunshine days in December
San Carlos, Cuba
  • Average sunshine days in December: 14 days

The month with the most sunshine days is December (14 days).
The month with the least sunshine days is May (4.6 days).

Average UV index in December
San Carlos, Cuba
  • Average UV index in December: 6

The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 6).

Average cloud cover in December
San Carlos, Cuba
  • Average cloud cover in December: 23

The months with the most cloud cover are May and October (Cloud cover 28).
The months with the least cloud cover are February and August (Cloud cover 21).

Average visibility in December
San Carlos, Cuba
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, June, July, August, September, November and December (10km).
The months with the lowest visibility are May and October (9km).

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