Climate Overview
The climate in Santiago is hot. The average annual temperature is 27°C and approximately 3261mm of precipitation falls per year. Santiago receives a notable amount of rainfall throughout the year, including during its driest month. Santiago sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Santiago has relatively stable temperatures year-round, staying within a 3°C range. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 28°C. February is the coolest month, with minimum temperatures around 26°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows.
Precipitation
Santiago is a very wet location, receiving approximately 3261mm of precipitation annually, which averages out to around 272mm per month. The wettest month is January, averaging 485mm of rainfall. December and November also tend to see above-average precipitation. The driest month is August, with just 168mm. That's 317mm less than January, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.
Wind
Santiago is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 3km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.
Seasons
82 days until Autumn
It is currently summer in Santiago, which began on June 21, 2026. Santiago sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in August at around 29°C, while the coldest stretch bottoms out in February near 26°C. Autumn is next, beginning on September 23, 2026 — 82 days from now.
Spring
Temperatures range from 26 to 29°C. Rainfall is heavy, totalling around 752mm across the season with a monthly average of 251mm. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 27 to 29°C. Rainfall is heavy, totalling around 680mm across the season with a monthly average of 227mm. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 27 to 29°C. Rainfall is heavy, totalling around 735mm across the season with a monthly average of 245mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 1094mm across the season with a monthly average of 365mm. Winds are generally light, averaging 6km/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.
