December weather forecastAntofagasta, Chile

December

Weather in December

December in Antofagasta ushers in summer, marked by gradually escalating temperatures. High wind gust of 16.3km/h (10.1mph) makes for an exciting end to the year. The increase in daylight hours offers ample sunshine for outdoor lovers, enhancing the city's appeal. The combined grandeur of clear skies, warm temperatures, and comfortable sea conditions make December a perfect climactic finale in Antofagasta.

Temperature

December begins with an average high-temperature of a still agreeable 21.2°C (70.2°F), reflecting close similarity to the preceding month. Antofagasta's nighttime temperatures in December display a slight drop from daytime highs, averaging to an enjoyable 16.7°C (62.1°F).

Humidity

In December, the average relative humidity is 73%.

Rainfall

January through May, September through December are months without rainfall in Antofagasta.

Sea temperature

In Antofagasta, Chile, the average seawater temperature in December is 19.3°C (66.7°F).
Note: Most people do not enjoy swimming in water that is 19.3°C (66.7°F). Breathing becomes increasingly challenging as the water temperature dips under 21°C (69.8°F).

Daylight

The month with the longest days is December, with an average of 13h and 36min of daylight.
On the first day of the month, sunrise is at 06:46 and sunset at 20:15. On the last day of December, sunrise is at 06:57 and sunset at 20:31 -03.

Sunshine

The months with the most sunshine are February, September through December, with an average of 10h of sunshine.

UV index

The months with the lowest UV index are March through December, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 5 in December leads to these recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.

Updated: Aug 30, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Antofagasta, in December, the average high-temperature is 21.2°C (70.2°F), and the average low-temperature is 16.7°C (62.1°F).

The average relative humidity in December is 73%.

January through May, September through December are months without rainfall.

In Antofagasta, in December, the average water temperature is 19.3°C (66.7°F). For swimming, a surface water temperature of 19.3°C (66.7°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

December has the longest days of the year in Antofagasta, with an average of 13h and 36min of daylight.

In Antofagasta, Chile, the average day length in December is 13h and 34min.

On the first day of December, sunrise is at 06:46 and sunset at 20:15. On the last day of the month, sunrise is at 06:57 and sunset at 20:31 -03.

February, September through December, with an average of 10h of sunshine, are months with the most sunshine.

The average sunshine duration in December is 10h.

The months with the lowest UV index are March through December, with an average maximum UV index of 5.

The average daily maximum UV index in December in Antofagasta is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

20.1°C

21.2°C

23.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13.8km/h

14.1km/h

13.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

0.2

0.7

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

30.9

30.4

Average UV index

Average cloud cover

10%

Average visibility

10km

Average temperature in December
Antofagasta, Chile

Average high temperature in December: 21.2°C

The warmest month (with the highest average high temperature) is February (23.7°C).
The month with the lowest average high temperature is July (18.3°C).

Average low temperature in December: 16.7°C

The month with the highest average low temperature is February (18.8°C).
The coldest month (with the lowest average low temperature) is August (12.6°C).

Average pressure in December
Antofagasta, Chile

Average pressure in December: 1012.9mbar

The month with the highest atmospheric pressure is July (1015.5mbar).
The month with the lowest atmospheric pressure is February (1012mbar).

Average wind speed in December
Antofagasta, Chile

Average wind speed in December: 12.8km/h

The windiest month (with the highest average wind speed) is December (12.8km/h).
The calmest months (with the lowest average wind speed) are May and June (10.9km/h).

Average humidity in December
Antofagasta, Chile

Average humidity in December: 73%

The months with the highest relative humidity are February, March and April (75%).
The months with the lowest relative humidity are June and July (67%).

Average rainfall in December
Antofagasta, Chile

Average rainfall in December: 0mm

The wettest months (with the highest rainfall) are June, July and August (1mm).
The driest months (with the least rainfall) are January, February, March, April, May, September, October, November and December (0mm).

Average rainfall days in December
Antofagasta, Chile

Average rainfall days in December: 0.2 days

The month with the highest number of rainy days is July (1.6 days).
The month with the least rainy days is November (0 days).

Average sea temperature in December
Antofagasta, Chile

Average sea temperature in December: 19.3°C

The best month for swimming (with the highest average sea temperature) is February (20.8°C).
The coldest month (with the lowest average sea temperature) is August (14.6°C).

Average daylight in December /
Average sunshine in December
Antofagasta, Chile

Average daylight in December: 13h and 36min

The month with the longest days is December (Average daylight: 13h and 36min).
The month with the shortest days is June (Average daylight: 10h and 42min).

Average sunshine in December: 10h and 0min

The months with the most sunshine are February, September, October, November and December (Average sunshine: 10h and 0min).
The month with the least sunshine is July (Average sunshine: 9h and 48min).

Average sunshine days in December
Antofagasta, Chile

Average sunshine days in December: 30.9 days

The month with the most sunshine days is October (31 days).
The month with the least sunshine days is February (27.2 days).

Average UV index in December
Antofagasta, Chile

Average UV index in December: 5

The months with the highest UV index are January and February (UV index 6).
The months with the lowest UV index are March, April, May, June, July, August, September, October, November and December (UV index 5).

Average cloud cover in December
Antofagasta, Chile

Average cloud cover in December: 6

The month with the most cloud cover is February (Cloud cover 11).
The month with the least cloud cover is September (Cloud cover 2).

Average visibility in December
Antofagasta, Chile

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).