Climate Overview
The climate in Santiago is cool. The average annual temperature is 10°C and approximately 1187mm of precipitation falls per year. February is the wettest month, receiving around 235mm of rainfall. Santiago is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: November, September, March. The coldest months are July, June, August, when temperatures can drop to 0°C.
Temperature
Santiago sees moderate temperature variation throughout the year, ranging from 0°C to 18°C. November is the warmest month, though highs remain moderate at 18°C with a mean of 10°C. July is the coolest month, with minimum temperatures around 0°C and an average of 8°C. On average, daily temperatures fluctuate by about 13°C between overnight lows and afternoon highs.
Precipitation
Santiago is a moderately rainy area, receiving approximately 1187mm of precipitation annually, which averages out to around 99mm per month. The wettest month is February, averaging 235mm of rainfall. December and January also tend to see above-average precipitation. The driest month is June, with just 12mm. That's 224mm less than February, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
Santiago is relatively calm, with an average annual wind speed of 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 1km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 0km/h gap between the calmest and windiest months.
Seasons
52 days until Spring
It is currently winter in Santiago, which began on June 21, 2026. Santiago is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in November at around 18°C, while the coldest stretch bottoms out in July near 0°C. Spring is next, beginning on September 23, 2026 — 52 days from now.
Spring
Temperatures range from 3 to 18°C. Precipitation is moderate at around 267mm for the season, averaging 89mm per month. Winds are generally light, averaging 1km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 5 to 17°C. Rainfall is heavy, totalling around 630mm across the season with a monthly average of 210mm. Winds are generally light, averaging 1km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 2 to 17°C. Precipitation is moderate at around 236mm for the season, averaging 79mm per month. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 0 to 17°C. Rainfall is relatively light, with around 54mm over the season and a monthly average of 18mm. Winds are generally light, averaging 1km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
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.
