Climate Overview
The climate in Ouesso is hot. The average annual temperature is 26°C and approximately 1109mm of precipitation falls per year. October is the wettest month, receiving around 165mm of rainfall. Ouesso sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Ouesso 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 27°C. January is the coolest month, with minimum temperatures around 21°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Ouesso is a moderately rainy area, receiving approximately 1109mm of precipitation annually, which averages out to around 92mm per month. The wettest month is October, averaging 165mm of rainfall. September and April also tend to see above-average precipitation. The driest month is January, with just 21mm. That's 144mm less than October, 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
Ouesso is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, 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 2km/h between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Ouesso, which began on March 20, 2026. Ouesso 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 January near 21°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 23 to 32°C. Rainfall is heavy, totalling around 347mm across the season with a monthly average of 116mm. Winds are generally light, averaging 9km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 22 to 30°C. Precipitation is moderate at around 240mm for the season, averaging 80mm per month. Winds are generally light, averaging 8km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 22 to 30°C. Rainfall is heavy, totalling around 427mm across the season with a monthly average of 142mm. Winds are generally light, averaging 8km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 21 to 33°C. Rainfall is relatively light, with around 95mm over the season and a monthly average of 32mm. Winds are generally light, averaging 9km/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 Ouesso 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.
