Climate Insights for Yei
Central Equatoria, South Sudan
Climate Overview
The climate in Yei is warm and mild. The average annual temperature is 25°C and approximately 1,265 mm of precipitation falls per year. October is the wettest month, receiving around 197 mm of rainfall. Yei sits near the equator, so seasonal temperature differences are minimal throughout the year.The climate in Yei is warm and mild. The average annual temperature is 77°F and approximately 49.8 in of precipitation falls per year. October is the wettest month, receiving around 7.8 in of rainfall. Yei sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Yei sees moderate temperature variation throughout the year, ranging from 19°C to 34°C. The warmest month is February, when average highs reach 34°C and the mean temperature sits around 28°C. August is the coolest month, with minimum temperatures around 19°C and an average of 23°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.Yei sees moderate temperature variation throughout the year, ranging from 66°F to 93°F. The warmest month is February, when average highs reach 93°F and the mean temperature sits around 83°F. August is the coolest month, with minimum temperatures around 66°F and an average of 73°F. On average, daily temperatures fluctuate by about 17°F between overnight lows and afternoon highs.
Precipitation
Yei is a fairly wet location, receiving approximately 1,265 mm of precipitation annually, which averages out to around 105 mm per month. The wettest month is October, averaging 197 mm of rainfall. August and September also tend to see above-average precipitation. The driest month is January, with just 4 mm. That's 193 mm 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.Yei is a fairly wet location, receiving approximately 49.8 in of precipitation annually, which averages out to around 4.1 in per month. The wettest month is October, averaging 7.8 in of rainfall. August and September also tend to see above-average precipitation. The driest month is January, with just 0.2 in. That's 7.6 in 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
Yei is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 8km/h in winter, 8km/h in spring, 5km/h in summer, 6km/h in autumn.Yei is relatively calm, with an average annual wind speed of 4mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is March, averaging 5mph, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 3mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2mph gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 5mph in winter, 5mph in spring, 3mph in summer, 3mph in autumn.
Best Time to Visit
The best time to visit Yei is during November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 85 mm per month. By contrast, February can be uncomfortably hot with highs reaching 34°C, while August is the coldest period with lows dropping to 19°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.The best time to visit Yei is during November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 76°F with modest rainfall averaging 3.3 in per month. By contrast, February can be uncomfortably hot with highs reaching 93°F, while August is the coldest period with lows dropping to 66°F. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.
Monthly Climate Data
The table below shows monthly climate averages for Yei 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.The table below shows monthly climate averages for Yei based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.