Climate Overview
The climate in Tulcán is temperate. The average annual temperature is 13°C and approximately 4365mm of precipitation falls per year. Tulcán receives a notable amount of rainfall throughout the year, including during its driest month. Tulcán sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Tulcán has relatively stable temperatures year-round, staying within a 9°C range. February is the warmest month, though highs remain moderate at 18°C with a mean of 13°C. August is the coolest month, with minimum temperatures around 9°C and an average of 13°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Tulcán is a very wet location, receiving approximately 4365mm of precipitation annually, which averages out to around 364mm per month. The wettest month is December, averaging 442mm of rainfall. January and April also tend to see above-average precipitation. The driest month is August, with just 246mm. That's 197mm less than December, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Tulcán is relatively calm, with an average annual wind speed of 1km/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 November, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
3 days until Summer
It is currently spring in Tulcán, which began on March 20, 2026. Tulcán 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 18°C, while the coldest stretch bottoms out in August near 9°C. Summer is next, beginning on June 21, 2026 — 3 days from now.
Spring
Temperatures range from 10 to 18°C. Rainfall is heavy, totalling around 1237mm across the season with a monthly average of 412mm. Winds are generally light, averaging 1km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 9 to 17°C. Rainfall is heavy, totalling around 879mm across the season with a monthly average of 293mm. Winds are generally light, averaging 2km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 9 to 18°C. Rainfall is heavy, totalling around 1049mm across the season with a monthly average of 350mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 9 to 18°C. Rainfall is heavy, totalling around 1201mm across the season with a monthly average of 400mm. Winds are generally light, averaging 1km/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 Tulcán 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.
