11-20 September, 2025

Rainfall

Standardized Precipitation Index

Moderately Wet to severely Wet Conditions

A large area stretching across the northern and central parts of the region was characterized by moderately to severely wet conditions. These areas include western Sudan, western Eritrea, much of Ethiopia, Djibouti and northern Somalia, western South Sudan, northeastern parts of Kenya and northeastern parts of Tanzania.

Moderately Dry to Severely Dry Conditions

Countries with pronounced rainfall deficit included a few pockets of northern Sudan, western South Sudan, southeastern Ethiopia, central Somalia, coastal parts of Kenya and a few pockets in Tanzania.

Recent rainfall anomalies

Wetter Than Normal Conditions (Green and Light Green)

  • Much Wetter than Normal (Dark Green): Concentrated heavily over the northern parts of the region including Sudan, South Sudan, Eritrea, Ethiopia, Djibouti and northern Somalia as well as a few pockets in Uganda.
  • Wetter than Normal (Light Green): Forms a wide band surrounding the darkest green area, covering most of countries highlighted above.

Near Normal Conditions (Light Blue)

  • Near Normal: Predominantly found in the equatorial band of the region, including large parts of Uganda, Ethiopia, western Kenya, central and southern South Sudan, and in Sudan.

Drier Than Normal Conditions (Yellow and Orange)

  • Drier than Normal (Yellow) and Much Drier than Normal (Orange): These conditions dominate the eastern and the Horn of Africa.
    • Significant drier areas cover most of southeastern Ethiopia, Somalia, Kenya, Tanzania.
    • The orange ('Much drier than normal') is evident in isolated patches across most of the countries highlighted.

No Rain (White)

  • No Rain: Indicated in the very northern and eastern dry areas, particularly along the coast of Eritrea, Sudan, eastern Somalia, and much of Kenya and Tanzania.
Recent rainfall totals

High Rainfall Accumulation (Dark Green to Light Green)

  • Highest Rainfall (201–300 mm and 101–200 mm): These values are extremely high for a 10-day period. The dark green (201–300 mm) is focused in isolated pockets within the central region of Ethiopia.
  • Significant Rainfall (51–100 mm and 26–50 mm): These categories cover vast areas, forming a wide, central-to-western band across the region, including:
    • Most of southern Sudan and South Sudan.
    • Large sections of Ethiopia (especially the western highlands).
    • Western Kenya and Uganda.

Moderate to Low Rainfall (Yellow and Orange)

  • Low Rainfall (11–25 mm and 6–10 mm): These values typically ring the high-rainfall areas and transition into the driest zones. They are concentrated over:
    • All countries in the GHA region.

Very Low or No Rain (Light Grey and White)

  • Very Low Rainfall (1–5 mm): Forms a major transitional zone across central Kenya, southern Somalia, Sudan, Ethiopia, and parts of Tanzania.
  • Negligible/No Rain (<1 mm or No Data): These dry conditions dominate the Sudan, parts of Eritrea, eastern half of Somalia, and several parts of Kenya and Tanzania.

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Recent rainfall anomalies
Recent rainfall anomalies

Wetter Than Normal Conditions (Green and Light Green)

  • Much Wetter than Normal (Dark Green): Concentrated heavily over the northern parts of the region including Sudan, South Sudan, Eritrea, Ethiopia, Djibouti and …
11 - 20 September 2025 Read More
Recent rainfall totals
Recent rainfall totals

High Rainfall Accumulation (Dark Green to Light Green)

  • Highest Rainfall (201–300 mm and 101–200 mm): These values are extremely high for a 10-day period. The dark green (201–300 mm) is focused in isolated pockets within …
11 - 20 September 2025 Read More
Standardized Precipitation Index
Standardized Precipitation Index

Moderately Wet to severely Wet Conditions

A large area stretching across the northern and central parts of the region was characterized by moderately to severely wet conditions. These areas include western Sudan, western Eritrea …

11 - 20 September 2025 Read More
Standardized Precipitation Index
Standardized Precipitation Index

Sudan, in northwestern, western and southern Uganda, in Rwanda, southeastern Ethiopia, in parts of southern Somalia and in northwestern parts of Tanzania.

Moderately wet to severely wet conditions were observed in eastern parts of Sudan, …

1 - 10 September 2025 Read More
Recent rainfall anomalies
Recent rainfall anomalies

Drier than and much drier than usual conditions were observed in central Sudan, in South Sudan, in parts of eastern Ethiopia, in northern and southern Somalia, in much of Rwanda and Burundi, in southern Uganda, …

1 - 10 September 2025 Read More
Recent rainfall totals
Recent rainfall totals

Moderate to high rainfall exceeding 100mm occurred in northwestern parts of Ethiopia.

Moderate rainfall of between 26-100mm occurred in southern parts of Sudan, in southwestern Eritrea, in much of South Sudan, western and central Ethiopia, …

1 - 10 September 2025 Read More
Recent rainfall totals
Recent rainfall totals

Moderate to high rainfall exceeding 100mm occurred in northern, western, and central parts of Ethiopia.

Moderate rainfall of between 26-100mm occurred in southern parts of Sudan, in southwestern Eritrea, in much of South Sudan, in …

1 - 10 August 2025 Read More
Recent rainfall anomalies
Recent rainfall anomalies

Drier than and much drier than usual conditions were observed in parts of southwestern Sudan and western to eastern Sudan, in parts of northwestern South Sudan, and in western and southwestern Uganda.

Wetter than and …

1 - 10 August 2025 Read More
Standardized Precipitation Index
Standardized Precipitation Index

Moderately dry to severely dry conditions were observed in western, central to eastern parts of Sudan, in northwestern part of South Sudan, and in western and south-central Uganda.

Moderately wet to severely wet conditions were …

1 - 10 August 2025 Read More
Recent rainfall anomalies
Recent rainfall anomalies

Drier than and much drier than usual conditions were observed in several parts of Uganda extending to the southern parts of South Sudan, in western and central Kenya, in southern, central and northern Ethiopia, in …

21 - 31 July 2025 Read More
Recent rainfall totals
Recent rainfall totals

Moderate to high rainfall exceeding 100mm occurred in isolated part of western Ethiopia.

Moderate rainfall of between 26-100mm occurred in western, southern and eastern Sudan, western and central Eritrea, in several parts of South Sudan, …

21 - 31 July 2025 Read More
Standardized Precipitation Index
Standardized Precipitation Index

Moderately dry to severely dry conditions were observed in several parts of Uganda, in southern, northern and eastern parts of South Sudan extending into southern parts of Sudan, in northern, central and south-central Ethiopia, in …

21 - 31 July 2025 Read More
Recent rainfall totals
Recent rainfall totals

Moderate rainfall of between 26-100mm occurred in several parts of South Sudan, Uganda, in parts of western Ethiopia, in south-central parts of Sudan, in parts of western Kenya and northern coast of Kenya.

Light rainfall …

21 - 30 June 2025 Read More
Recent rainfall anomalies
Recent rainfall anomalies

Drier than and much drier than usual conditions were observed in western, central to southeastern Sudan, in southwestern Eritrea, in northern and northeastern Ethiopia, in eastern and southwestern South Sudan, and in northeastern Uganda extending …

21 - 30 June 2025 Read More
Standardized Precipitation Index
Standardized Precipitation Index

Moderately dry to severely dry conditions were observed in western, southwestern, central and southeastern Sudan, in western Eritrea, in northern, western and northeastern Ethiopia, and in eastern and western parts of South Sudan.

Moderately wet …

21 - 30 June 2025 Read More