December weather forecast
Cayo Santa María, Cuba

December

Weather in December

December carries forward the climate trajectory of November in Cayo Santa María. The cooler air breathes a different life onto the island, bringing a soothing close to the year. Though it marks the commencement of winter in most parts of the world, here temperatures still average around a pleasant 27°C (80.6°F). Sunshine graces the island for a decent duration each day, complementing the holiday spirits. As the island moves into the new year, the promise of another cycle of spectacular weather awaits.

Temperature

Cayo Santa María's lowest average temperatures are recorded in January, February and December, reaching a high of 27°C (80.6°F).

Rainfall

In December, the rain falls for 7 days. Throughout December, 39mm (1.54") of precipitation is accumulated. Throughout the year, there are 125 rainfall days, and 1280mm (50.39") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature is 26°C (78.8°F).
Note: Water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are pleasurable, without feeling uncomfortable even during extended periods.

Daylight

With an average of 10h and 48min of daylight, December has the shortest days of the year in Cayo Santa María.
On the first day of December, sunrise is at 06:39 and sunset at 17:30. On the last day of the month, sunrise is at 06:56 and sunset at 17:42 CST.

Sunshine

The months with the least sunshine are January, February, June, September through December, with an average of 7h of sunshine.

UV index

With an average maximum UV index of 6, December is the month with the lowest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: An average UV index of 6 in December transforms into this advice:
Shield from overexposure. Defense against sun-related harm is required. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

Frequently asked questions

What are the coldest months?
January, February and December, with an average high-temperature of 27°C (80.6°F), are marked as the coldest months.
What are the temperatures in December?
The average high-temperature, in December, in Cayo Santa María, is 27°C (80.6°F), while the average low-temperature is 19°C (66.2°F).
How much does it rain in December?
In Cayo Santa María, in December, it is raining for 7 days, with typically 39mm (1.54") of accumulated precipitation.
What is the water temperature in December?
In Cayo Santa María, in December, the average water temperature is 26°C (78.8°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?
December has the shortest days of the year, with an average of 10h and 48min of daylight.
What is the average length of the day in December?
In Cayo Santa María, the average day length in December is 10h and 46min.
What time are sunrise and sunset in December?
In December, on the first day of the month, sunrise is at 06:39 and sunset at 17:30. On the last day of the month, sunrise is at 06:56 and sunset at 17:42 CST.
What is the month with the least sunshine?
January, February, June, September through December, with an average of 7h of sunshine, are months with the least sunshine.
How long on average sun shines in December?
The average sunshine duration in December is 7h.
When is the lowest UV index?
With an average maximum UV index of 6, December is the month with the lowest UV index in Cayo Santa María.
What is the UV index reading in December?
In Cayo Santa María, 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 Sun's UV rays.
Average high temperature
Average low temperature
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average UV index
Average temperature in December - Cayo Santa María, Cuba
Average temperature in December
Cayo Santa María, Cuba
  • Average high temperature in December: 27°C

The warmest months (with the highest average high temperature) are June, July, August and September (32°C).
The months with the lowest average high temperature are January, February and December (27°C).

  • Average low temperature in December: 19°C

The months with the highest average low temperature are June, July, August, September and October (23°C).
The coldest months (with the lowest average low temperature) are January and February (18°C).

Average rainfall in December - Cayo Santa María, Cuba
Average rainfall in December
Cayo Santa María, Cuba
  • Average rainfall in December: 39mm

The wettest month (with the highest rainfall) is October (190mm).
The driest month (with the least rainfall) is February (36mm).

Average rainfall days in December - Cayo Santa María, Cuba
Average rainfall days in December
Cayo Santa María, Cuba
  • Average rainfall days in December: 7 days

The month with the highest number of rainy days is October (16 days).
The month with the least rainy days is April (5 days).

Average sea temperature in December - Cayo Santa María, Cuba
Average sea temperature in December
Cayo Santa María, Cuba
  • Average sea temperature in December: 26°C

The best months for swimming (with the highest average sea temperature) are June, July, August, September and October (29°C).
The coldest months (with the lowest average sea temperature) are January, February and March (25°C).

Average daylight in December / Average sunshine in December - Cayo Santa María, Cuba
Average daylight in December /
Average sunshine in December
Cayo Santa María, 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

The months with the most sunshine are March, April, May, July and August (Average sunshine: 8h).
The months with the least sunshine are January, February, June, September, October, November and December (Average sunshine: 7h).

Average UV index in December - Cayo Santa María, Cuba
Average UV index in December
Cayo Santa María, Cuba
  • Average UV index in December: 6

The months with the highest UV index are April, May, June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 6).

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