Our seasonal forecasts
Our seasonal forecasts help Eastern Africa prepare for the season and mitigate the effects of climate extremes.
October - December 2026
Rainfall
Temperature
- Southern Ethiopia, Somalia and cross border areas of Kenya, Uganda, and South Sudan are expected to experience maximum dry days of 8 to 10 days.
- Long wet spells expected over parts of Rwanda, Burundi, and Lake Victoria Regions in Kenya, Tanzania and Uganda.
- Onset expected to start in September and progress southwards following the southward progression of the rain band
- A delayed onset is expected in the western parts of the region, while early onset is expected in the eastern and southern parts
- Higest probability of seasonal rainfall exceeding 400 mm indicated over southern Somalia, southern Kenya, south-eastern Uganda, Burundi and north-western Tanzania
- Above normal temperatures are expected across most of the Greater Horn of Africa, with particularly high probabilities in Somalia, Ethiopia and coastal regions.
- Increased likelihood of wetter-than-normal conditions are predicted over most parts of the region with the highest probabilities over north-eastern Kenya, central to southern Somalia and south eastern Ethiopia
- The rest of the region indicates dominant probabilities of 55-85% of Above –normal rainfall
Seasonal forecasts
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Temperature forecast
- Warmer than normal conditions expected all over the country.
Temperature forecast
- Warmer than normal conditions expected all over the country.
Rainfall forecast
- Wetter than usual conditions expected over parts of northern and southern coastal areas of the country.
- Average conditions expected over north-western areas of the country.
- Central and areas in southern parts of the country are …
Rainfall forecast
- Drier than normal conditions expected over most parts of the country.
- Average conditions expected over central-northern to north-eastern parts of the country.
Rainfall forecast
- Wetter than usual conditions expected over northern and southern coastal parts of Somalia, south-eastern Ethiopia, cross-border areas of Ethiopia-Sudan-South Sudan, and coastal Kenya.
- Drier than normal conditions expected over most parts of Sudan, South Sudan, …
Temperature forecast
- Warmer than average temperatures predicted over the whole region.
- Highest probabilities over northern Sudan, parts of Ethiopia, Somalia, Kenya, and Tanzania.
Rainfall forecast
- Drier than usual rainfall is indicated over eastern (Ethiopia, Eritrea, Djibouti, Somalia, eastern Kenya) and western (western South Sudan, Uganda, and Rwanda) parts of the region.
- Wetter than usual rainfall are indicated over cross-border …
Probability of 400 mm
- High chances of exceeding 400 mm rainfall over the Lake Victoria Basin and south-western Ethiopia.
- Low chances of exceeding 40 mm rainfall over the rest of the region.
Temperature forecast
- Warmer than average temperatures are expected all over the region with highest probabilities indicated over Sudan, Ethiopia, Kenya, and southern areas of Tanzania.
Probability of 300 mm
- High chances of exceeding 300 mm rainfallover central to western Kenya, Tanzania, Rwanda, Burundi, Uganda, south western South Sudan, and south-western Ethiopia.
Onset dates
- Onset expected from second week of March over western and south-western Kenya and progress northwards.
Probability Onset
- Rain excpected to start on time over most parts of the region while a delay is excpected over north-eastern Tanzania, Rwanda, Burundi, and central Somalia.
Temperature forecast
- Warmer than normal temperatures expected over eastern parts of the region and northern areas of Sudan.
- Near normal temperatures expected in the western and south-western parts of Tanzania, Burundi, eastern Rwanda, central Ethiopia, and part …
Length of wet spells
- Longest wet spells expected over western to central Ethiopia.
Probability of 300 mm
- Higher chances of rainfall exceeding 300 mm over central to western Ethiopia, South Sudan, Uganda, and southern Sudan.