Climate Insights for Santiago

The climate in Santiago is hot. The average annual temperature is 27°C and approximately 1884mm of precipitation falls per year. Santiago receives a notable amount of rainfall throughout the year, including during its driest month. Santiago is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: June, May, July. The coldest months are February, January, March, when temperatures can drop to 21°C.

Santiago sees moderate temperature variation throughout the year, ranging from 21°C to 35°C. The warmest month is June, when average highs reach 35°C and the mean temperature sits around 29°C. February is the coolest month, with minimum temperatures around 21°C and an average of 24°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.

Santiago is a fairly wet location, receiving approximately 1884mm of precipitation annually, which averages out to around 157mm per month. The wettest month is July, averaging 244mm of rainfall. October and September also tend to see above-average precipitation. The driest month is April, with just 54mm. That's 190mm less than July, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

Santiago is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently summer in Santiago, which began on June 21, 2026. Santiago is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in June at around 35°C, while the coldest stretch bottoms out in February near 21°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

The best time to visit Santiago is during February, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 73mm per month. By contrast, June can be uncomfortably hot with temperatures reaching 35°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Santiago based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.