Climate Overview
The climate in Nariño is hot. The average annual temperature is 26°C and approximately 3492mm of precipitation falls per year. Nariño receives a notable amount of rainfall throughout the year, including during its driest month. Nariño sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Nariño sees moderate temperature variation throughout the year, ranging from 21°C to 33°C. The warmest month is February, when average highs reach 33°C and the mean temperature sits around 28°C. July is the coolest month, with minimum temperatures around 21°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Nariño is a very wet location, receiving approximately 3492mm of precipitation annually, which averages out to around 291mm per month. The wettest month is May, averaging 611mm of rainfall. June and July also tend to see above-average precipitation. The driest month is February, with just 96mm. That's 515mm less than May, 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
Nariño is relatively calm, with an average annual wind speed of 8km/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 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Nariño, which began on March 20, 2026. Nariño sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in February at around 33°C, while the coldest stretch bottoms out in July near 21°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 22 to 32°C. Rainfall is heavy, totalling around 1210mm across the season with a monthly average of 403mm. Winds are generally light, averaging 8km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 21 to 30°C. Rainfall is heavy, totalling around 1351mm across the season with a monthly average of 450mm. Winds are generally light, averaging 9km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 22 to 31°C. Rainfall is heavy, totalling around 615mm across the season with a monthly average of 205mm. Winds are generally light, averaging 9km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 23 to 33°C. Rainfall is heavy, totalling around 315mm across the season with a monthly average of 105mm. Winds are generally light, averaging 8km/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 Nariño 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.
