December weather forecastSal, Cape Verde

A man aboard a simple boat near a beach, on the clear waters of Santa Maria Island in Sal, Cape Verde

December

Weather in December

December heralds in the winter season in Sal. With temperatures oscillating from 23.1°C (73.6°F) to 24.1°C (75.4°F), the weather becomes noticeably colder than in November. The arrival of December brings the lowest temperatures of the year, aligning with the year-end festivities. Despite a slight nip in the air, the climatic conditions remain amiable, with minimal rainfall that does not deter outdoor plans. As the year concludes, Sal continues to revel in the cool winter charm.

Temperature

December experiences an average high-temperature of a still moderately hot 24.1°C (75.4°F), barely different from November's 25.5°C (77.9°F). During December, the nighttime temperatures align closely with the daytime averages, measuring a still warm 23.1°C (73.6°F).

Humidity

The months with the lowest humidity are January and December, with an average relative humidity of 72%.

Rainfall

December is the last month it rains. During 1.2 rainfall days, in December, Sal aggregates 2mm (0.08") of precipitation. In Sal, during the entire year, the rain falls for 37.7 days and collects up to 90mm (3.54") of precipitation.

Sea temperature

In December, the average sea temperature is 24°C (75.2°F).
Note: Think about diving into 24°C (75.2°F) waters. Factors like your sensitivity to cold, the brightness of the sun, wind conditions, and the day's warmth play a role. For reference, Olympic swimming competitions use waters between 25°C (77°F) and 28°C (82.4°F).

Daylight

With an average of 11h and 12min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:44 and sunset at 17:57. On the last day of December, sunrise is at 07:00 and sunset at 18:09 -01.

Sunshine

In December, the average sunshine is 8.3h.

UV index

January through August, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 6 in December transforms into the following instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be on guard! The reflective nature of sand and water boosts UV exposure.

Updated: Aug 12, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In December, in Sal, the average high-temperature is 24.1°C (75.4°F), and the average low-temperature is 23.1°C (73.6°F).

January and December, with an average relative humidity of 72%, are the least humid months.

In Sal, Cape Verde, the average relative humidity in December is 72%.

December is the last month it rains. During 1.2 rainfall days, in December, Sal aggregates 2mm (0.08") of precipitation.

In December, the average sea temperature is 24°C (75.2°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 24°C (75.2°F).

December has the shortest days of the year, with an average of 11h and 12min of daylight.

In Sal, Cape Verde, the average day length in December is 11h and 9min.

In December, on the first day of the month, sunrise is at 06:44 and sunset at 17:57. On the last day of the month, sunrise is at 07:00 and sunset at 18:09 -01.

The average sunshine duration in December is 8.3h.

The months with the lowest UV index are January through August, November and December, with an average maximum UV index of 6.

In Sal, the average daily maximum UV index in December is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

25.5°C

24.1°C

22.7°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

25.9km/h

28km/h

30.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

1.9

1.2

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

27.4

28.6

29.5

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Sal, Cape Verde

Average high temperature in December: 24.1°C

The warmest month (with the highest average high temperature) is October (26.7°C).
The month with the lowest average high temperature is March (21.6°C).

Average low temperature in December: 23.1°C

The month with the highest average low temperature is September (26°C).
The coldest month (with the lowest average low temperature) is March (20.6°C).

Average pressure in December
Sal, Cape Verde

Average pressure in December: 1015.3mbar

The month with the highest atmospheric pressure is January (1016.2mbar).
The month with the lowest atmospheric pressure is August (1013mbar).

Average wind speed in December
Sal, Cape Verde

Average wind speed in December: 27.4km/h

The windiest month (with the highest average wind speed) is February (30.2km/h).
The calmest month (with the lowest average wind speed) is August (17.9km/h).

Average humidity in December
Sal, Cape Verde

Average humidity in December: 72%

The months with the highest relative humidity are June and July (84%).
The months with the lowest relative humidity are January and December (72%).

Average rainfall in December
Sal, Cape Verde

Average rainfall in December: 2mm

The wettest month (with the highest rainfall) is August (35mm).
The driest month (with the least rainfall) is January (0mm).

Average rainfall days in December
Sal, Cape Verde

Average rainfall days in December: 1.2 days

The month with the highest number of rainy days is September (8 days).
The month with the least rainy days is January (1 days).

Average sea temperature in December
Sal, Cape Verde

Average sea temperature in December: 24°C

The best month for swimming (with the highest average sea temperature) is September (27°C).
The coldest months (with the lowest average sea temperature) are January, February, March, April and May (22°C).

Average daylight in December /
Average sunshine in December
Sal, Cape Verde

Average daylight in December: 11h and 12min

The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 12min).

Average sunshine in December: 8h and 18min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is August (Average sunshine: 7h and 0min).

Average sunshine days in December
Sal, Cape Verde

Average sunshine days in December: 28.6 days

The month with the most sunshine days is January (29.5 days).
The month with the least sunshine days is September (18.9 days).

Average UV index in December
Sal, Cape Verde

Average UV index in December: 6

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

Average cloud cover in December
Sal, Cape Verde

Average cloud cover in December: 20

The month with the most cloud cover is August (Cloud cover 48).
The month with the least cloud cover is January (Cloud cover 18).

Average visibility in December
Sal, Cape Verde

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).