Climate Overview
The climate in Riobamba is cool. The average annual temperature is 9°C and approximately 2976mm of precipitation falls per year. Riobamba receives a notable amount of rainfall throughout the year, including during its driest month. Riobamba sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Riobamba sees moderate temperature variation throughout the year, ranging from 4°C to 15°C. March is the warmest month, though highs remain moderate at 15°C with a mean of 10°C. August is the coolest month, with minimum temperatures around 4°C and an average of 8°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.
Precipitation
Riobamba is a very wet location, receiving approximately 2976mm of precipitation annually, which averages out to around 248mm per month. The wettest month is March, averaging 353mm of rainfall. April and December also tend to see above-average precipitation. The driest month is August, with just 135mm. That's 218mm less than March, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.
Wind
Riobamba is relatively calm, with an average annual wind speed of 11km/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 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.
Seasons
89 days until Winter
It is currently autumn in Riobamba, which began on March 20, 2026. Riobamba sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in March at around 15°C, while the coldest stretch bottoms out in August near 4°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 4 to 15°C. Rainfall is heavy, totalling around 683mm across the season with a monthly average of 228mm. Winds are generally light, averaging 11km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 6 to 15°C. Rainfall is heavy, totalling around 857mm across the season with a monthly average of 286mm. Winds are generally light, averaging 10km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 6 to 15°C. Rainfall is heavy, totalling around 896mm across the season with a monthly average of 299mm. Winds are generally light, averaging 10km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 4 to 13°C. Rainfall is heavy, totalling around 540mm across the season with a monthly average of 180mm. Winds are generally light, averaging 12km/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 Riobamba 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.
