Weather in Santiago

On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are December, January, and February. Santiago is in Chile at 33.5°S. The 2001–2020 NASA POWER daily record describes a tropical climate with small temperature change.

January is the warmest month (average 22.3°C, high 29.9°C) and July is the coolest (average 9.5°C, low 3.6°C). Rain is wet season runs from June to July, inside an annual total of 274 mm. The wettest month is June at 63 mm; the driest is December at 7 mm.

Rain through the year

The wet season in Santiago starts in June and ends in July (June and July). June is the core of it at 63 mm. December is the other extreme, with 7 mm.

A rainy day here is a day with at least 1 mm in the NASA POWER series. June averages 6 such days; December averages 2.

Temperature through the year

Monthly average highs run from 15.5°C in July to 29.9°C in January. Nights follow the same curve: 3.6°C in July and 14.6°C in January.

Mean high across all twelve months is 23.0°C and mean low is 9.0°C. These are 20-year grid averages, so a city station can read a few degrees warmer or cooler.

What stands out month by month

Peak heat arrives in January: 29.9°C by day, 14.6°C at night, and 31% humidity. April brings 12 mm and 3 rainy days; temperatures run from 10.2°C to 24.1°C. May stands apart from the months beside it: 19.8°C / 7.5°C and 44 mm.

The wet season opens in June. Expect 63 mm and 6 rainy days, with nights around 4.4°C. July closes the wet season: 47 mm over 6 rainy days, then the calendar dries. December is the driest month, averaging only 7 mm across 2 rainy days. Highs sit near 28.5°C.

Best months to visit Santiago

The three months with the highest comfort score are December, January, and February: December (20.6°C average, 7 mm, 30% humidity); January (22.3°C average, 8 mm, 31% humidity); February (21.7°C average, 9 mm, 33% humidity). Those months sit across the year end, so they are listed in season order rather than January-to-December. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you want the wet season itself — fewer crowds, greener landscape, heavier rain — aim at June–July instead of the score.

How Santiago compares inside Chile

Santiago is the only Chile city in this dataset, so the figures on this page are the national sample we publish. They still come from the same NASA POWER daily series (2001–2020) used everywhere else on the site.