January weather forecast
Chile

January is the height of summer in Chile and sees some of the warmest temperatures of the year. In the northern region of the Atacama Desert, January offers comfortable and stable weather conditions. Daytime temperatures in the desert areas, including notable cities like San Pedro de Atacama, fluctuate from 15°C (59°F) to 25°C (77°F), and clear skies are almost a guarantee, providing an ideal environment for stargazing. However, the significant temperature drop after sunset, usually to 10°C (50°F), necessitates appropriate clothing for visitors planning nighttime activities.

In Central Chile, which encompasses Santiago, Valparaiso, and the winemaking regions of the Central Valley, January is the driest month, featuring long, sunny days and relatively low humidity. Daytime temperatures range from 20°C (68°F) to 30°C (86°F), with the heat slightly intensifying compared to the slightly cooler and variable temperatures of December. This hot, dry climate makes it an excellent time to visit the beaches along the central coast.

Further south, cities such as Puerto Montt and Punta Arenas, located in the Zona Sur and Zona Austral respectively, also experience their warmest month of the year in January. However, due to their subpolar oceanic climate, 'warm' is a relative term. Average temperatures range from 10°C (50°F) to 15°C (59°F) and there are longer daylight hours, making it an ideal time for outdoor exploration and activities such as hiking and wildlife spotting in Torres del Paine National Park. It's important to note that this region's weather is notoriously changeable, and it is not unusual for periods of sunshine, rain, and wind to occur within the same day.

Moving up to the high altitude regions of the Andes, temperatures in January remain cool due to the alpine climate, with averages ranging from 5°C (41°F) to 15°C (59°F). As compared to December, January sees slightly higher temperatures, allowing for more comfortable conditions for activities like mountaineering and trekking.

In January, the isolated Easter Island experiences warm, tropical weather with temperatures fluctuating from 23°C (73.4°F) to 28°C (82.4°F). It's also one of the rainiest months on the island, with precipitation levels slightly higher than in December, contributing to the lush, green landscapes characteristic of the island at this time of year.

---

• Santiago - January »
  The months with the least rainfall in Santiago are January through March Rain falls for 0.8 days and accumulates 1mm (0.04") of rain. In Santiago, during January, the rain falls for 0.8 days and regularly aggregates up to 1mm (0.04") of precipitation.
• Valparaíso - January »
  Valparaíso's January weather reaches an average high of 20.8°C (69.4°F) and an average low of 13.5°C (56.3°F), making it the warmest month. On the last day of January, in Valparaíso, sunrise is at 07:08 and sunset at 20:51 -03.
• Concepción - January »
  The month with the least rainfall in Concepción is January, when the rain falls for 2.6 days and typically collects 4mm (0.16") of precipitation. The least humid month in Concepción is January, with an average relative humidity of 69%.
• La Serena - January »
  The months with the highest humidity in La Serena are January and February, with an average relative humidity of 66%. January is the month with the highest UV index in La Serena, with an average maximum UV index of 6.
• Antofagasta - January »
  On the last day of January, in Antofagasta, sunrise is at 07:19 and sunset at 20:30 -03. In Antofagasta, in January, the average water temperature is 20.7°C (69.3°F).
• Temuco - January »
  The month with the least rainfall in Temuco is January, when the rain falls for 6 days and typically collects 40mm (1.57") of precipitation. With an average relative humidity of 71%, January is the least humid month in Temuco.
• Rancagua - January »
  January, with its high-temperature average of 27.1°C (80.8°F) and a low-temperature average of 11.8°C (53.2°F), is the warmest month in Rancagua, Chile. The months with the most sunshine in Rancagua are January and February, with an average of 9.9h of sunshine.
• Iquique - January »
  January, August through December, with an average relative humidity of 73%, are the least humid months in Iquique, Chile. January, August through December, with an average relative humidity of 73%, are the least humid months in Iquique, Chile.
• Talca - January »
  Key highlights of January for Talca are the warm climate and the correspondingly bright sunlight hours, with the heat peaking at 31.8°C (89.2°F). January, February and December, with an average maximum UV index of 6, are months with the highest UV index in Talca, Chile.
• Arica - January »
  The transition from December to January in Arica sees an average high-temperature of a moderately hot 23.1°C (73.6°F), indicating a minor variance from the prior month. Observing the meteorological statistics, January in Arica stands out as one of the warmer months, kicking off the year with pretty high temperatures.
• Puerto Montt - January »
  The month with the least rainfall in Puerto Montt is January, when the rain falls for 11.5 days and typically collects 42mm (1.65") of precipitation. The month with the least rainfall in Puerto Montt is January, when the rain falls for 11.5 days and typically collects 42mm (1.65") of precipitation.
• Chillán - January »
  The month with the least rainfall in Chillán is January, when the rain falls for 1.8 days and typically collects 5mm (0.2") of precipitation. The least humid month in Chillán, Chile, is January, with an average relative humidity of 50%.