Seasonal Forecast August to October 2026

Rainfall probabilistic forecast

Highlights:

The seasonal rainfall outlook for the June–September (ASO) 2026 period indicates mixed rainfall conditions across South Sudan. Areas shaded in green indicate an increased likelihood of above-normal rainfall, while areas shaded in yellow and orange indicate an increased likelihood of below-normal rainfall.

The highest probability of above-normal rainfall (40–60%) is forecast over Wau, Jur River counties in Western Bahr el Ghazal State, most parts of Northern Bahr el Gazal State, Abyei Administrative Area, Abiemnhom county in Ruweng Administrative Area, Southern parts of Fashoda, Central parts of Beliet, Longochuk, Maiwut counties in Upper Nile State, and Northern parts of Tombara & Nagero counties in Western Equatorial.

Most central, eastern, and southern parts of the country are shaded in yellow and orange, indicating a 40–80% probability of below-normal rainfall. These areas include much of Jonglei State, the Pibor Administrative Area, Eastern Equatoria State, Lakes State, parts of Central Equatorial State, southern Unity State, and parts of Western Equatorial State.

Temperature forecast

Highlights:

The August–October (ASO) 2026 mean temperature forecast indicates a strong likelihood of above-normal temperatures across South Sudan. Areas shaded in dark red indicate a greater than 80% probability of above-normal temperatures over all South Sudan.