December weather forecastArica, Chile

December

Weather in December

To conclude the year, December showcases the heat of the summer season with the maximum temperatures seen in the year. Sea temperatures reach a cosy 19.6°C (67.3°F), which is conducive for an array of water activities in Arica, Chile. Following December, expect slightly cooler temperatures heading into January. The UV Index rises back to 6 indicating the need for sun protection. December concludes with an average rainfall of 7mm (0.28"), marking the year’s end with slightly wetter than usual conditions.

Temperature

In December, Arica's weather conditions record an average high-temperature of a still agreeable 21.4°C (70.5°F), demonstrating little divergence from the preceding month. During December, Arica perceives a slight decrease in temperature from daytime highs, settling at an average low of 17.8°C (64°F).

Humidity

April and December, with an average relative humidity of 82%, are the most humid months.

Rainfall

In December, the rain falls for 3.1 days. Throughout December, 7mm (0.28") of precipitation is accumulated. Throughout the year, in Arica, Chile, there are 43 rainfall days, and 61mm (2.4") of precipitation is accumulated.

Sea temperature

In Arica, in December, the average water temperature is 19.6°C (67.3°F).
Note: A surface water temperature of 19.6°C (67.3°F) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 21°C (69.8°F).

Daylight

December has the longest days of the year, with an average of 13h and 12min of daylight.
On the first day of December in Arica, sunrise is at 06:55 and sunset at 20:05. On the last day of the month, sunrise is at 07:07 and sunset at 20:21 -03.

Sunshine

In December, the average sunshine is 9.4h.

UV index

January through March and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 6 during December translates into the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.

Updated: Jan 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Arica in December has an average high-temperature of 21.4°C (70.5°F) and an average low-temperature of 17.8°C (64°F).

April and December, with an average relative humidity of 82%, are most humid months in Arica.

In Arica, the average relative humidity in December is 82%.

In December, in Arica, Chile, the rain falls for 3.1 days. Throughout December, 7mm (0.28") of precipitation is accumulated.

In Arica, Chile, the average seawater temperature in December is 19.6°C (67.3°F). For swimming, a surface water temperature of 19.6°C (67.3°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, with an average of 13h and 12min of daylight.

The average day length in December is 13h and 13min.

On the first day of December, sunrise is at 06:55 and sunset at 20:05. On the last day of the month, sunrise is at 07:07 and sunset at 20:21 -03.

In Arica, the average sunshine duration in December is 9.4h.

January through March and December, with an average maximum UV index of 6, are months with the highest UV index in Arica, Chile.

The average daily maximum UV index in December in Arica, Chile, 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

20.3°C

21.4°C

23.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13.5km/h

12.9km/h

12.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

1.6

3.1

7.4

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

14.4

19.8

15.4

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Arica, Chile

Average high temperature in December: 21.4°C

The warmest month (with the highest average high temperature) is February (23.9°C).
The month with the lowest average high temperature is August (17.4°C).

Average low temperature in December: 17.8°C

The month with the highest average low temperature is February (20.6°C).
The coldest month (with the lowest average low temperature) is August (13.1°C).

Average pressure in December
Arica, Chile

Average pressure in December: 1013.7mbar

The month with the highest atmospheric pressure is July (1016.7mbar).
The month with the lowest atmospheric pressure is February (1013.1mbar).

Average wind speed in December
Arica, Chile

Average wind speed in December: 11.7km/h

The windiest months (with the highest average wind speed) are October and November (12.3km/h).
The calmest month (with the lowest average wind speed) is February (10.4km/h).

Average humidity in December
Arica, Chile

Average humidity in December: 82%

The months with the highest relative humidity are April and December (82%).
The month with the lowest relative humidity is July (77%).

Average rainfall in December
Arica, Chile

Average rainfall in December: 7mm

The wettest months (with the highest rainfall) are January and February (10mm).
The driest months (with the least rainfall) are April and November (3mm).

Average rainfall days in December
Arica, Chile

Average rainfall days in December: 3.1 days

The month with the highest number of rainy days is January (7.4 days).
The month with the least rainy days is November (1.6 days).

Average sea temperature in December
Arica, Chile

Average sea temperature in December: 19.6°C

The best month for swimming (with the highest average sea temperature) is February (21.8°C).
The coldest month (with the lowest average sea temperature) is August (15°C).

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

Average daylight in December: 13h and 12min

The month with the longest days is December (Average daylight: 13h and 12min).
The month with the shortest days is June (Average daylight: 11h and 0min).

Average sunshine in December: 9h and 24min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The months with the least sunshine are February and March (Average sunshine: 9h and 12min).

Average sunshine days in December
Arica, Chile

Average sunshine days in December: 19.8 days

The month with the most sunshine days is December (19.8 days).
The month with the least sunshine days is August (10.4 days).

Average UV index in December
Arica, Chile

Average UV index in December: 6

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

Average cloud cover in December
Arica, Chile

Average cloud cover in December: 27

The month with the most cloud cover is February (Cloud cover 32).
The months with the least cloud cover are August and September (Cloud cover 10).

Average visibility in December
Arica, 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).