Our seasonal forecasts
Our seasonal forecasts help Eastern Africa prepare for the season and mitigate the effects of climate extremes.
August - October 2026
Rainfall
Temperature
- Warmer than usual temperatures are expected over most parts of the region.
- Wetter-than-normal conditions expected over the eastern Horn, including Somalia, south-eastern and part of western Ethiopia, eastern to coastal Kenya and over few places in South Sudan, Sudan, Eritrea, Rwanda and northern Burundi.
- Drier than usual conditions expected over much of South Sudan, Sudan, Uganda, Ethiopia, western Kenya, northern Tanzania, and Rwanda.
Seasonal forecasts
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Length of wet spells
- Longer-than-usual wet spells expected over southern Somalia, much of Kenya, Uganda, Rwanda, Burundi, and western Tanzania.
Temperature forecast
- Warmer than usual conditions expected over the whole country.
Onset anomalies
- Early onset expected over the eastern parts of the region.
- Delayed onset expected over the western areas of the region.
Temperature forecast
- Warmer-than-usual conditions expected across the GHA.
- Enhanced probabilities for warmer-than-usual temperatures over parts of Tanzania, Kenya, Somalia, Ethiopia, Eritrea, and Djibouti.
- High chances of cooler-than-usual temperatures indicated over eastern parts of Kenya.
Temperature forecast
- Warmer than usual temperatures indicated over the whole region.
Probability Onset
- Early onset forecasted over the eastern parts of the region, with high probabilities over parts of eastern Kenya, Tanzania, and southern Somalia.
- Delayed onset expected over western parts of the region.
Temperature forecast
- Warmer than usual conditions expected over the whole country.
Rainfall forecast
- Wetter than usual conditions expected over the whole country.
Probability of 300 mm
- High chances of exceeding 300 mm over southern Somalia, eastern Kenya, southern Uganda, Rwanda, Burundi, and western Tanzania
Probability of 300 mm
- High chances of rainfall exceeding 300mm over south-western Uganda, Rwanda, Burundi, and adjacent areas of Tanzania.
Onset dates
- Western equatorial parts of the region to continue receiving rainfall through September.
- Onset expected in the north-eastern parts of the region in October, and move southwards reaching Tanzania in November.
Dates of dry or wet spells
- Longest dry spell after onset expected in October over the western and north-eastern parts of the region, and in November and December respectively in Kenya and Tanzania.
Rainfall forecast
- Drier than usual conditions expected over coastal Sudan, equatorial and southern parts of the region with enhanced probabilities over eastern Kenya and southern parts of Somalia.
- Wetter than usual conditions expected over central to eastern …
Temperature forecast
- Warmer than average conditions indicated across the Greater horn of Africa (GHA). There are enhanced probabilities for warmer than average temperatures over parts of Tanzania, Kenya, Somalia and Djibouti.
- Average temperatures expected over much of …