Climate Overview
The climate in Chaitén Airport is cool. The average annual temperature is 8°C and approximately 4759mm of precipitation falls per year. Chaitén Airport receives a notable amount of rainfall throughout the year, including during its driest month. Chaitén 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: February, January, March. The coldest months are July, September, June, when temperatures can drop to 2°C. Chaitén Airport experiences heavy snowfall, typically from January through November.
Temperature
Chaitén Airport sees moderate temperature variation throughout the year, ranging from 2°C to 17°C. February is the warmest month, though highs remain moderate at 17°C with a mean of 13°C. July is the coolest month, with minimum temperatures around 2°C and an average of 4°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between May and June, with a 3°C shift in average temperatures.
Precipitation
Chaitén Airport is a very wet location, receiving approximately 4759mm of precipitation annually, which averages out to around 397mm per month. The wettest month is August, averaging 567mm of rainfall. June and May also tend to see above-average precipitation. The driest month is February, with just 222mm. That's 345mm less than August, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Chaitén Airport receives heavy snowfall, accumulating around 304cm annually from January through November. The snowiest month is August, with approximately 89cm. Winter travel should account for significant snow cover.
Wind
Chaitén Airport is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.
Seasons
93 days until Spring
It is currently winter in Chaitén Airport, which began on June 21, 2026. Chaitén 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 February at around 17°C, while the coldest stretch bottoms out in July near 2°C. Spring is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 2 to 13°C. Rainfall is heavy, totalling around 1184mm across the season with a monthly average of 395mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 8 to 17°C. Rainfall is heavy, totalling around 850mm across the season with a monthly average of 283mm. Winds are generally light, averaging 2km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 5 to 16°C. Rainfall is heavy, totalling around 1165mm across the season with a monthly average of 388mm. Expect around 10cm of snow accumulation during this period. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 2 to 8°C. Rainfall is heavy, totalling around 1559mm across the season with a monthly average of 520mm. Expect around 209cm of snow accumulation during this period. Winds are generally light, averaging 2km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Monthly Climate Data
The table below shows monthly climate averages for Chaitén 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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.
