Climate Insights for Sonsón

The climate in Sonsón is temperate. The average annual temperature is 13°C and approximately 193mm of precipitation falls per year. November is the wettest month, receiving around 33mm of rainfall. Sonsón sits near the equator, so seasonal temperature differences are minimal throughout the year.

Sonsón sees moderate temperature variation throughout the year, ranging from 4°C to 22°C. September is the warmest month, though highs remain moderate at 22°C with a mean of 18°C. December is the coolest month, with minimum temperatures around 4°C and an average of 8°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between October and November, with a 4°C shift in average temperatures.

Sonsón is a quite dry location, receiving approximately 193mm of precipitation annually, which averages out to around 16mm per month. The wettest month is July, averaging 33mm of rainfall. August and October also tend to see above-average precipitation. The driest month is March, with just 0mm. That's 33mm less than July, 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.

Sonsón is relatively calm, with an average annual wind speed of 3km/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 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 7km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 5km/h in winter, 4km/h in spring, 2km/h in summer, 3km/h in autumn.

It is currently summer in Sonsón, which began on June 21, 2026. Sonsón sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in September at around 22°C, while the coldest stretch bottoms out in December near 4°C. Autumn is next, beginning on September 23, 2026 (16 days from now).

The best time to visit Sonsón is during June, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 21mm per month. By contrast, December can be quite cold with temperatures dropping to 4°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Sonsón 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.