Climate Insights for Nariño

The climate in Nariño is warm and mild. The average annual temperature is 23°C and approximately 1113mm of precipitation falls per year. November is the wettest month, receiving around 247mm of rainfall. Nariño sits near the equator, so seasonal temperature differences are minimal throughout the year.

Nariño sees moderate temperature variation throughout the year, ranging from 17°C to 31°C. The warmest month is August, when average highs reach 31°C and the mean temperature sits around 24°C. January is the coolest month, with minimum temperatures around 17°C and an average of 22°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs.

Nariño is a moderately rainy area, receiving approximately 1113mm of precipitation annually, which averages out to around 93mm per month. The wettest month is November, averaging 247mm of rainfall. October and April also tend to see above-average precipitation. The driest month is July, with just 11mm. That's 236mm less than November, 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.

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 August, averaging 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 7km/h in winter, 7km/h in spring, 9km/h in summer, 8km/h in autumn.

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 August at around 31°C, while the coldest stretch bottoms out in January near 17°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Nariño is during January, February, May, June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 44mm per month. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

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.