December weather forecast
Santiago de Cuba, Cuba

December

Weather in December

December in Santiago de Cuba welcomes a perceptible change in the city's climatological conditions. The trend of decrease in rainfall continues, capping the annual precipitation figures at 25mm (0.98"). The sea experiences a cooling trend, going down to 27.8°C (82°F), yet it is still warm enough for sea activities. Despite these changes, the wind and visibility conditions maintain steadiness, providing a suitable environment for city exploration. This subtle shift in weather sets the stage for the new year.

Temperature

December's onset records a minor alteration in the average high-temperature to a still moderately hot 28.5°C (83.3°F) from November's 29.1°C (84.4°F). Santiago de Cuba experiences an average temperature drop to an agreeable 20.5°C (68.9°F) during December nights.

Heat index

The heat index value during December is calculated to be a hot 33°C (91.4°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Given the heat index, its values are aligned with shaded sites and gentle winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. 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. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

The average relative humidity in December in Santiago de Cuba is 80%.

Rainfall

In Santiago de Cuba, in December, it is raining for 12.1 days, with typically 25mm (0.98") of accumulated precipitation. Throughout the year, there are 183.7 rainfall days, and 516mm (20.31") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature in Santiago de Cuba is 27.8°C (82°F).
Note: Engaging in swimming, diving, or other water activities is highly enjoyable in temperatures ranging from 25°C (77°F) to 29°C (84.2°F), without any unpleasant sensations for prolonged durations.

Daylight

With an average of 10h and 54min of daylight, December has the shortest days of the year in Santiago de Cuba.
On the first day of the month, sunrise is at 06:22 and sunset at 17:22. On the last day of December, in Santiago de Cuba, sunrise is at 06:38 and sunset at 17:35 CST.

Sunshine

The average sunshine in December is 7h.

UV index

January through March, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Santiago de Cuba. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, a daily maximum UV index of 6 leads to the following instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Beware! Reflections from sand and water can intensify the Sun's UV radiation.

Frequently asked questions

How hot is it in Santiago de Cuba in December?
The average high-temperature, in December, in Santiago de Cuba, is 28.5°C (83.3°F), while the average low-temperature is 20.5°C (68.9°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in December is calculated to be 33°C (91.4°F).
What is the average humidity in December in Santiago de Cuba?
The average relative humidity in December in Santiago de Cuba, Cuba, is 80%.
How many days does it rain in December in Santiago de Cuba?
In December, the rain falls for 12.1 days. Throughout December, 25mm (0.98") of precipitation is accumulated.
How warm is the water in December in Santiago de Cuba?
In Santiago de Cuba, the average seawater temperature in December is 27.8°C (82°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.
What is the month with the shortest days in Santiago de Cuba?
The month with the shortest days in Santiago de Cuba is December, with an average of 10h and 54min of daylight.
What is the average length of the day in December in Santiago de Cuba?
The average day length in December is 10h and 57min.
When is the sunrise / sunset in December in Santiago de Cuba?
In December, on the first day of the month, sunrise is at 06:22 and sunset at 17:22. On the last day of the month, in Santiago de Cuba, Cuba, sunrise is at 06:38 and sunset at 17:35 CST.
How long on average sun shines in December in Santiago de Cuba?
In December, the average sunshine duration is 7h.
What are the months with the lowest UV index in Santiago de Cuba?
January through March, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Santiago de Cuba.
How high is the UV index in December in Santiago de Cuba?
In Santiago de Cuba, Cuba, the average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health risk 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 sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Santiago de Cuba, Cuba
  • Average high temperature in December: 28.5°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 (28°C).

  • Average low temperature in December: 20.5°C

The month with the highest average low temperature is August (23.3°C).
The coldest month (with the lowest average low temperature) is March (19.6°C).

Average pressure in December
Santiago de Cuba, Cuba
  • Average pressure in December: 1015.5mbar

The month with the highest atmospheric pressure is January (1016.6mbar).
The month with the lowest atmospheric pressure is October (1012.1mbar).

Average wind speed in December
Santiago de Cuba, Cuba
  • Average wind speed in December: 8km/h

The windiest month (with the highest average wind speed) is January (8.1km/h).
The calmest month (with the lowest average wind speed) is September (5.8km/h).

Average humidity in December
Santiago de Cuba, 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 (76%).

Average rainfall in December
Santiago de Cuba, Cuba
  • Average rainfall in December: 25mm

The wettest month (with the highest rainfall) is May (75mm).
The driest months (with the least rainfall) are January and February (15mm).

Average rainfall days in December
Santiago de Cuba, Cuba
  • Average rainfall days in December: 12.1 days

The month with the highest number of rainy days is May (19.3 days).
The months with the least rainy days are January and February (9.3 days).

Average sea temperature in December
Santiago de Cuba, Cuba
  • Average sea temperature in December: 27.8°C

The best month for swimming (with the highest average sea temperature) is September (29.9°C).
The coldest month (with the lowest average sea temperature) is February (26.3°C).

Average daylight in December /
Average sunshine in December
Santiago de Cuba, 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 0min

The month with the most sunshine is August (Average sunshine: 11h and 24min).
The month with the least sunshine is November (Average sunshine: 6h and 48min).

Average sunshine days in December
Santiago de Cuba, Cuba
  • Average sunshine days in December: 15.7 days

The month with the most sunshine days is January (17.8 days).
The month with the least sunshine days is May (7.1 days).

Average UV index in December
Santiago de Cuba, Cuba
  • Average UV index in December: 6

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

Average cloud cover in December
Santiago de Cuba, Cuba
  • Average cloud cover in December: 26

The months with the most cloud cover are May and October (Cloud cover 30).
The months with the least cloud cover are July and August (Cloud cover 23).

Average visibility in December
Santiago de Cuba, Cuba
  • Average visibility in December: 9km

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

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