December weather forecast
Santa Marta, Colombia

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Weather in December

December caps off the year in Santa Marta with its minimal rainfall of 12mm (0.47"), marking a stark shift to its drier climate. The city's humidity lessens, complemented by a gentle increase in wind speed, reflecting a typically dry December atmosphere. The reduced cloud cover initiates a natural spectacle, painting striking sunsets and enhancing the twilight hours. With the sea temperature cooling off to 27.3°C (81.1°F), the waters still remain inviting, ideal for closing off the year with serene beach visits.

Temperature

The onset of December in Santa Marta notes an average high-temperature of a still warm 27.2°C (81°F), subtly shifted from November's 27.5°C (81.5°F). In Santa Marta, December nights maintain a consistent temperature, with an average low of 24.6°C (76.3°F).

Heat index

December's average heat index is appraised at a hot 30°C (86°F). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.
Observations indicate that the heat index values are for shady locations with light wind. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in December in Santa Marta is 77%.

Rainfall

In December, the rain falls for 7.5 days. Throughout December, 12mm (0.47") of precipitation is accumulated. Throughout the year, there are 211.9 rainfall days, and 605mm (23.82") of precipitation is accumulated.

Sea temperature

In Santa Marta, in December, the average water temperature is 27.3°C (81.1°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and other activities, ensuring comfort and enjoyment for lengthened periods.

Daylight

With an average of 11h and 30min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:00 and sunset at 17:31. On the last day of December, sunrise is at 06:15 and sunset at 17:44 -05.

Sunshine

January and December, with an average of 7.6h of sunshine, are months with the least sunshine.

UV index

The months with the highest UV index are February through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: During December, 7 as the daily maximum UV index converts into the following advice:
Shun overexposure. Protection from sun ravages is indispensable. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Stay cautious! Sand and water reflections increase UV radiation potency.
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Frequently asked questions

What is the usual temperature for Santa Marta in December?

December temperatures in Santa Marta vary between a high-temperature of 27.2°C (81°F) and a low-temperature of 24.6°C (76.3°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in December is appraised at 30°C (86°F).

What is the average humidity in December in Santa Marta?

In Santa Marta, the average relative humidity in December is 77%.

How many days does it rain in December in Santa Marta?

In December, the rain falls for 7.5 days. Throughout December, 12mm (0.47") of precipitation is accumulated.

How warm is the water in December in Santa Marta?

In Santa Marta, Colombia, in December, the average water temperature is 27.3°C (81.1°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 Santa Marta?

December has the shortest days of the year in Santa Marta, with an average of 11h and 30min of daylight.

What is the average length of the day in December in Santa Marta?

The average day length in December in Santa Marta, Colombia, is 11h and 29min.

What time are sunrise and sunset in December in Santa Marta?

On the first day of December in Santa Marta, Colombia, sunrise is at 06:00 and sunset at 17:31. On the last day of the month, sunrise is at 06:15 and sunset at 17:44 -05.

What is the month with the least sunshine in Santa Marta?

January and December, with an average of 7.6h of sunshine, are months with the least sunshine in Santa Marta.

How many hours of sunshine does Santa Marta have in December?

In December, the average sunshine duration is 7.6h.

What are the months with the highest UV index in Santa Marta?

February through December, with an average maximum UV index of 7, are months with the highest UV index in Santa Marta.

How high is the UV index in December in Santa Marta?

In Santa Marta, the average daily maximum UV index in December is 7. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.

Average temperature in December
Santa Marta, Colombia

Average temperature in December - Santa Marta, Colombia
  • Average high temperature in December: 27.2°C

The warmest month (with the highest average high temperature) is May (27.8°C).
The month with the lowest average high temperature is February (27°C).

  • Average low temperature in December: 24.6°C

The month with the highest average low temperature is October (25.4°C).
The coldest month (with the lowest average low temperature) is February (23.8°C).

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Average pressure in December
Santa Marta, Colombia

Average pressure in December - Santa Marta, Colombia
  • Average pressure in December: 1010mbar

The month with the highest atmospheric pressure is January (1010.7mbar).
The month with the lowest atmospheric pressure is November (1009.5mbar).

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Average wind speed in December
Santa Marta, Colombia

Average wind speed in December - Santa Marta, Colombia
  • Average wind speed in December: 23.9km/h

The windiest month (with the highest average wind speed) is February (28.5km/h).
The calmest month (with the lowest average wind speed) is October (13.1km/h).

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Average humidity in December
Santa Marta, Colombia

Average humidity in December - Santa Marta, Colombia
  • Average humidity in December: 77%

The month with the highest relative humidity is August (81%).
The months with the lowest relative humidity are January and February (76%).

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Average rainfall in December
Santa Marta, Colombia

Average rainfall in December - Santa Marta, Colombia
  • Average rainfall in December: 12mm

The wettest month (with the highest rainfall) is August (95mm).
The driest months (with the least rainfall) are January and February (7mm).

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Average rainfall days in December
Santa Marta, Colombia

Average rainfall days in December - Santa Marta, Colombia
  • Average rainfall days in December: 7.5 days

The month with the highest number of rainy days is October (26.9 days).
The month with the least rainy days is February (3.8 days).

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Average sea temperature in December
Santa Marta, Colombia

Average sea temperature in December - Santa Marta, Colombia
  • Average sea temperature in December: 27.3°C

The best month for swimming (with the highest average sea temperature) is October (29.5°C).
The coldest month (with the lowest average sea temperature) is February (25.7°C).

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Average daylight in December /
Average sunshine in December
Santa Marta, Colombia

Average daylight in December / Average sunshine in December - Santa Marta, Colombia
  • Average daylight in December: 11h and 3min

The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).

  • Average sunshine in December: 7h and 4min

The month with the most sunshine is April (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 7h and 36min).

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Average sunshine days in December
Santa Marta, Colombia

Average sunshine days in December - Santa Marta, Colombia
  • Average sunshine days in December: 14.6 days

The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is September (0.6 days).

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Average UV index in December
Santa Marta, Colombia

Average UV index in December - Santa Marta, Colombia
  • Average UV index in December: 7

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

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Average cloud cover in December
Santa Marta, Colombia

Average cloud cover in December - Santa Marta, Colombia
  • Average cloud cover in December: 12

The month with the most cloud cover is October (Cloud cover 28).
The months with the least cloud cover are January and February (Cloud cover 8).

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Average visibility in December
Santa Marta, Colombia

Average visibility in December - Santa Marta, Colombia
  • 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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Santa Marta, Colombia

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