December weather forecast
Santo Tomás, Cuba

December

Weather in December

December, the first month of the winter in Santo Tomás, is also a moderately hot month, with temperature in the range of an average high of 27.9°C (82.2°F) and an average low of 21.5°C (70.7°F).

Temperature

Santo Tomás experiences an average high-temperature of a still moderately hot 27.9°C (82.2°F) in December, subtly different from November's 28.6°C (83.5°F). Santo Tomás, during the month of December, experiences an average low-temperature of 21.5°C (70.7°F).

Heat index

The heat index for December is calculated to be a tropical 32°C (89.6°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

In December, the average relative humidity is 79%.

Rainfall

In Santo Tomás, during December, the rain falls for 7.9 days and regularly aggregates up to 18mm (0.71") of precipitation. In Santo Tomás, during the entire year, the rain falls for 181.5 days and collects up to 590mm (23.23") of precipitation.

Daylight

With an average of 10h and 48min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:37 and sunset at 17:31. On the last day of December, sunrise is at 06:53 and sunset at 17:43 CST.

Sunshine

In December, the average sunshine is 7h.

UV index

The months with the lowest UV index in Santo Tomás are January, February, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily high UV index of 6 in December leads to these guidelines:
Guard against overexposure. Protection from sun-induced harm is essential. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.

Frequently asked questions

What is the average December temperature?
The high-temperature, in December, in Santo Tomás, is 27.9°C (82.2°F), while the low-temperature averages to 21.5°C (70.7°F). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in December is calculated to be 32°C (89.6°F).
What is the average humidity in December?
The average relative humidity in December is 79%.
How much does it rain in December?
In Santo Tomás, in December, it is raining for 7.9 days, with typically 18mm (0.71") of accumulated precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 10h and 48min of daylight.
What is the average length of the day in December?
In December, the average day length is 10h and 49min.
When are sunrise and sunset in December?
On the first day of December, sunrise is at 06:37 and sunset at 17:31. On the last day of the month, sunrise is at 06:53 and sunset at 17:43 CST.
How many hours of sunshine does Santo Tomás have in December?
In December, the average sunshine duration is 7h.
What is the month with the lowest UV index?
January, February, November and December, with an average maximum UV index of 6, are months with the lowest UV index.
What is the UV index intensity in December?
In Santo Tomás, the average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
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 - Santo Tomás, Cuba
Average temperature in December
Santo Tomás, Cuba
  • Average high temperature in December: 27.9°C

The warmest month (with the highest average high temperature) is August (32.1°C).
The month with the lowest average high temperature is January (27°C).

  • Average low temperature in December: 21.5°C

The month with the highest average low temperature is August (25.5°C).
The coldest month (with the lowest average low temperature) is January (20.3°C).

Average pressure in December - Santo Tomás, Cuba
Average pressure in December
Santo Tomás, Cuba
  • Average pressure in December: 1016.4mbar

The month with the highest atmospheric pressure is January (1017.5mbar).
The month with the lowest atmospheric pressure is October (1012.5mbar).

Average wind speed in December - Santo Tomás, Cuba
Average wind speed in December
Santo Tomás, Cuba
  • Average wind speed in December: 13.6km/h

The windiest month (with the highest average wind speed) is November (13.9km/h).
The calmest month (with the lowest average wind speed) is June (9.8km/h).

Average humidity in December - Santo Tomás, Cuba
Average humidity in December
Santo Tomás, Cuba
  • Average humidity in December: 79%

The month with the highest relative humidity is October (81%).
The month with the lowest relative humidity is March (71%).

Average rainfall in December - Santo Tomás, Cuba
Average rainfall in December
Santo Tomás, Cuba
  • Average rainfall in December: 18mm

The wettest month (with the highest rainfall) is October (91mm).
The driest months (with the least rainfall) are February and March (14mm).

Average rainfall days in December - Santo Tomás, Cuba
Average rainfall days in December
Santo Tomás, Cuba
  • Average rainfall days in December: 7.9 days

The months with the highest number of rainy days are August and October (21.7 days).
The month with the least rainy days is February (6.6 days).

Average daylight in December / Average sunshine in December - Santo Tomás, Cuba
Average daylight in December /
Average sunshine in December
Santo Tomás, Cuba
  • Average daylight in December: 10h and 5min

The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).

  • Average sunshine in December: 7h and 0min

The month with the most sunshine is August (Average sunshine: 11h and 18min).
The month with the least sunshine is November (Average sunshine: 6h and 54min).

Average sunshine days in December - Santo Tomás, Cuba
Average sunshine days in December
Santo Tomás, Cuba
  • Average sunshine days in December: 20.3 days

The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is August (6.4 days).

Average UV index in December - Santo Tomás, Cuba
Average UV index in December
Santo Tomás, Cuba
  • Average UV index in December: 6

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

Average cloud cover in December - Santo Tomás, Cuba
Average cloud cover in December
Santo Tomás, Cuba
  • Average cloud cover in December: 26

The month with the most cloud cover is October (Cloud cover 31).
The month with the least cloud cover is February (Cloud cover 24).

Average visibility in December - Santo Tomás, Cuba
Average visibility in December
Santo Tomás, Cuba
  • Average visibility in December: 10km

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

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