December weather forecast
Chile

December in Chile marks the arrival of summer, with temperatures rising across the country and longer daylight hours becoming the norm.

In the northern Atacama Desert, December sees daytime temperatures ranging from 20°C (68°F) to 30°C (86°F). Nighttime temperatures rise to 14°C (57.2°F). The desert continues to provide clear skies, ideal for astronomical observations and desert exploration.

In Central Chile, encompassing Santiago and Valparaiso, temperatures continue to increase with the onset of summer. Daytime temperatures range between 25°C (77°F) and 30°C (86°F), while nighttime temperatures are between 14°C (57.2°F) and 18°C (64.4°F). Rainfall is rare during this time, and the weather is generally sunny, making it a great time to explore the region's outdoor attractions and vibrant city life.

In the southern regions, including Puerto Montt in the Zona Sur and Punta Arenas in the Zona Austral, temperatures rise to between 9°C (48.2°F) and 18°C (64.4°F). The weather during this period is relatively stable, with less rainfall and more hours of daylight, ideal for outdoor activities such as hiking and sightseeing.

In the Andean region, December brings temperatures between 5°C (41°F) and 20°C (68°F). The onset of summer is marked by the melting of the last snows and the green landscapes offer great opportunities for hiking and mountaineering.

Finally, on Easter Island, December brings warmer temperatures, ranging from 23°C (73.4°F) to 28°C (82.4°F). The weather continues to stay relatively dry, making it a perfect time to explore the island's archaeological sites and enjoy its beautiful beaches.

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• Santiago - December »
  January through March, November and December, with an average maximum UV index of 5, are months with the highest UV index in Santiago, Chile. In Santiago during December, the rain falls for 1.5 days and regularly aggregates up to 2mm (0.08") of precipitation.
• Valparaíso - December »
  In Valparaíso in December, during 0.3 rainfall days, 1mm (0.04") of precipitation is typically accumulated. On the first day of December in Valparaíso, Chile, sunrise is at 06:30 and sunset at 20:41.
• Concepción - December »
  The month with the longest days in Concepción, Chile, is December, with an average of 14h and 36min of daylight. In Concepción during December, the rain falls for 4.1 days and regularly aggregates up to 8mm (0.31") of precipitation.
• La Serena - December »
  In La Serena rain does not fall in January, February, April, September and December. On the first day of December in La Serena sunrise is at 06:36 and sunset at 20:32.
• Antofagasta - December »
  The months with the most sunshine in Antofagasta are February, September through December, with an average of 10h of sunshine. Recording a slight drop from the daily maximum, Antofagasta notes an average low temperature of 16.7°C (62.1°F) in the month of December.
• Temuco - December »
  In Temuco in December, during 8 rainfall days, 51mm (2.01") of precipitation is typically accumulated. In Temuco, in December, it is raining for 8 days, with typically 51mm (2.01") of accumulated precipitation.
• Rancagua - December »
  In Rancagua during December, the rain falls for 2.2 days and regularly aggregates up to 10mm (0.39") of precipitation. With an average of 14h and 24min of daylight, December has the longest days of the year in Rancagua, Chile.
• Iquique - December »
  The months with the least sunshine in Iquique are January, February, April, May, July and December, with an average of 9.8h of sunshine. The month with the longest days in Iquique is December, with an average of 13h and 18min of daylight.
• Talca - December »
  December has the longest days of the year in Talca, Chile, with an average of 14h and 30min of daylight. On the first day of December in Talca sunrise is at 06:24 and sunset at 20:47.
• Arica - December »
  January through March and December, with an average maximum UV index of 6, are months with the highest UV index in Arica, Chile. In Arica, in December, the average water temperature is 19.6°C (67.3°F).
• Puerto Montt - December »
  December has the longest days of the year in Puerto Montt with an average of 15h and 6min of daylight. On the first day of December in Puerto Montt sunrise is at 06:12 and sunset at 21:09.
• Chillán - December »
  In Chillán in December, during 3.4 rainfall days, 12mm (0.47") of precipitation is typically accumulated. The month with the longest days in Chillán is December, with an average of 14h and 36min of daylight.