March weather forecast
Chile

As the first month of autumn, March brings a transition in Chile's weather conditions with varying changes noticeable across the country's diverse geographical regions.

In the northern Atacama Desert, the weather remains stable. Temperatures in March generally range from 13°C (55.4°F) to 23°C (73.4°F). Nighttime temperatures can drop to 8°C (46.4°F), and the desert continues to enjoy predominantly clear skies, offering favourable conditions for astronomical observations.

Central Chile, encompassing Santiago, Valparaiso, and the Central Valley, experiences a gradual shift from the hot summer weather to cooler autumn conditions. Average temperatures drop to between 15°C (59°F) and 25°C (77°F) during the day, with nighttime temperatures ranging from 10°C (50°F) to 14°C (57.2°F). March marks the end of the grape harvest season, and the vine leaves begin to change colours, creating picturesque vineyards.

In the southern regions, the onset of autumn brings a significant change. Cities like Puerto Montt in the Zona Sur and Punta Arenas in the Zona Austral start to experience a drop in temperatures, with averages between 7°C (44.6°F) and 14°C (57.2°F), and a decrease in daylight hours. The weather becomes increasingly unpredictable, with a higher chance of rainfall and windy conditions.

In the high-altitude Andes, March signifies a transition towards colder temperatures, especially towards the end of the month. Average temperatures fluctuate between 3°C (37.4°F) to 12°C (53.6°F). While the beginning of the month may still be suitable for outdoor activities, the weather becomes progressively colder and less predictable towards the end of the month.

Easter Island in March remains warm, although slightly cooler than the summer months, with temperatures ranging from 22°C (71.6°F) to 27°C (80.6°F). Rainfall continues to decrease compared to February, contributing to the gradually drier climate as the island transitions into its cooler season.

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• Santiago - March »
  January through March, November and December, with an average maximum UV index of 5, are months with the highest UV index in Santiago. The months with the lowest humidity are March and April, with an average relative humidity of 36%.
• Valparaíso - March »
  On the first day of March in Valparaíso, Chile, sunrise is at 07:35 and sunset at 20:21. March is the first month it rains in Valparaíso, Chile.
• Concepción - March »
  With an average sea temperature of 15°C (59°F), March is the month with the warmest seawater in Concepción, Chile. The months with the highest UV index in Concepción are January through March, November and December, with an average maximum UV index of 5.
• La Serena - March »
  In La Serena in March, the average water temperature is 18.3°C (64.9°F). On the first day of March in La Serena, sunrise is at 07:36 and sunset at 20:17.
• Antofagasta - March »
  March through December, with an average maximum UV index of 5, are months with the lowest UV index in Antofagasta. In Antofagasta in March, the average water temperature is 19.9°C (67.8°F).
• Temuco - March »
  On the first day of March in Temuco sunrise is at 07:34 and sunset at 20:30. In Temuco, during March, the rain falls for 8 days and regularly aggregates up to 48mm (1.89") of precipitation.
• Rancagua - March »
  The month with the least rainfall in Rancagua is March, when the rain falls for 2.3 days and typically collects 2mm (0.08") of precipitation. March is the least humid month in Rancagua with an average relative humidity of 40%.
• Iquique - March »
  The months with the most sunshine in Iquique are March, June, August through November, with an average of 9.9h of sunshine. The months with the highest UV index in Iquique, Chile, are January through March, with an average maximum UV index of 6.
• Talca - March »
  In Talca, during March, the rain falls for 1.7 days and regularly aggregates up to 5mm (0.2") of precipitation. By March, a pronounced coolness sweeps over the city as Talca's weather tends towards an autumnal vibe, with lower temperatures of 28.9°C (84°F) highlighting this change.
• Arica - March »
  February and March, with an average of 9.2h of sunshine, are months with the least sunshine in Arica. February and March, with an average of 9.2h of sunshine, are months with the least sunshine in Arica.
• Puerto Montt - March »
  In Puerto Montt, in March, during 13.8 rainfall days, 63mm (2.48") of precipitation is typically accumulated. The shift to March in Puerto Montt, Chile, signals an average high-temperature of a still enjoyable 17.4°C (63.3°F), subtly varied from February's 19°C (66.2°F).
• Chillán - March »
  March, the first month of the autumn in Chillán, is also a moderately hot month, with an average temperature fluctuating between 11.4°C (52.5°F) and 27.6°C (81.7°F). On the first day of March in Chillán, Chile, sunrise is at 07:34 and sunset at 20:26.