Climate Overview
The climate in Santiago Airport is hot. The average annual temperature is 26°C and approximately 1991mm of precipitation falls per year. Santiago Airport receives a notable amount of rainfall throughout the year, including during its driest month. Santiago Airport 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: October, September, November. The coldest months are July, June, August, when temperatures can drop to 18°C.
Temperature
Santiago Airport sees moderate temperature variation throughout the year, ranging from 18°C to 34°C. The warmest month is October, when average highs reach 34°C and the mean temperature sits around 28°C. July is the coolest month, with minimum temperatures around 18°C and an average of 23°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 2°C shift in average temperatures.
Precipitation
Santiago Airport is a fairly wet location, receiving approximately 1991mm of precipitation annually, which averages out to around 166mm per month. The wettest month is January, averaging 325mm of rainfall. December and February also tend to see above-average precipitation. The driest month is July, with just 35mm. That's 289mm less than January, 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 Airport is mildly breezy, with an average annual wind speed of 12km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.
Seasons
89 days until Winter
It is currently autumn in Santiago Airport, which began on March 20, 2026. Santiago Airport 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 October at around 34°C, while the coldest stretch bottoms out in July near 18°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 22 to 34°C. Rainfall is heavy, totalling around 445mm across the season with a monthly average of 148mm. Winds are generally light, averaging 13km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 24 to 32°C. Rainfall is heavy, totalling around 919mm across the season with a monthly average of 306mm. Winds are generally light, averaging 12km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 20 to 31°C. Rainfall is heavy, totalling around 492mm across the season with a monthly average of 164mm. Winds are generally light, averaging 11km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 18 to 32°C. Rainfall is relatively light, with around 135mm over the season and a monthly average of 45mm. Winds are generally light, averaging 12km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Santiago Airport is during May, June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 56mm per month. By contrast, October can be uncomfortably hot with temperatures reaching 34°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Santiago Airport 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.
