Climate Overview
The climate in Riobamba is cool. The average annual temperature is 9°C and approximately 2074mm 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 3°C to 16°C. September is the warmest month, though highs remain moderate at 16°C with a mean of 9°C. August is the coolest month, with minimum temperatures around 3°C and an average of 9°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.
Precipitation
Riobamba is a very wet location, receiving approximately 2074mm of precipitation annually, which averages out to around 173mm per month. The wettest month is March, averaging 262mm of rainfall. December and April also tend to see above-average precipitation. The driest month is August, with just 73mm. That's 189mm 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 2km/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 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 September at around 16°C, while the coldest stretch bottoms out in August near 3°C. Winter is next, beginning on June 21, 2026 — 3 days from now.
Spring
Temperatures range from 4 to 16°C. Rainfall is heavy, totalling around 448mm across the season with a monthly average of 149mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 5 to 15°C. Rainfall is heavy, totalling around 658mm across the season with a monthly average of 219mm. Winds are generally light, averaging 1km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 5 to 15°C. Rainfall is heavy, totalling around 648mm across the season with a monthly average of 216mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 3 to 15°C. Rainfall is heavy, totalling around 321mm across the season with a monthly average of 107mm. Winds are generally light, averaging 2km/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.
