1-10 October, 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 central Sudan, western Eritrea, south and northwestern Ethiopia, and northern Somalia, western and southeastern South Sudan, western parts of Kenya and northwestern parts of Tanzania.

Moderately Dry to Severely Dry Conditions

Countries with pronounced rainfall deficit included a few pockets in the border region between Ethiopia, Sudan and South Sudan, southeastern Ethiopia, central Somalia, 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, parts of Eritrea, Ethiopia, northern Somalia and the equatorial region including eastern Uganda, central to western Kenya and northwestern Tanzania.
  • 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 observed in large parts of equatorial and northern parts of the region including Uganda, South Sudan, Ethiopia, Somalia, Eritrea, Kenya and Sudan.

Drier Than Normal Conditions (Yellow and Orange)

  • Drier than Normal (Yellow) and Much Drier than Normal (Orange): These conditions dominate the northern and southern parts of the region.
    • Significant drier areas cover most of northern Ethiopia, southern Somalia, eastern Kenya, much of Tanzania, northwestern Eritrea and in Sudan.
    • The orange ('Much drier than normal') is evident across most of the countries highlighted.

No Rain (White)

  • No Rain: Indicated in the very northern and eastern dry areas, particularly in northern parts of Sudan, northern Ethiopia, and northwestern Kenya as well as central and southern 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. Rainfall amounts between 101 and 300 mm was observed in isolated pockets within the central region of Ethiopia and western parts of Kenya.
  • 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:
    • A few pockets in Somalia
    • Most of southern Sudan and South Sudan.
    • Large sections of Ethiopia (especially the western highlands).
    • Western Kenya, Uganda, Rwanda, Burundi and a few pockets in Tanzania.

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 northern Sudan, parts of Eritrea, Ethiopia, much of Somalia, northwestern and northeastern Kenya, and most parts of Tanzania.
  • Negligible/No Rain (<1 mm or No Data): These dry conditions dominate northern Sudan, parts of Ethiopia, and several parts of Kenya and Tanzania.

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Showing 504 results
Recent rainfall anomalies
Recent rainfall anomalies
  • Much wetter than usual conditions observed over most parts of southern and central Sudan.
  • Wetter than usual conditions observed over western Sudan, north-western and northern parts of South Sudan.
  • Usual rainfall conditions observed in most …
11 - 20 July 2021 Read More
Standardized Precipitation Index
Standardized Precipitation Index
  • Wetter than usual conditions observed over the southern part and Blue Nile of Sudan and central parts of South Sudan.
  • Usual rainfall conditions observed in south-western and northern parts of South Sudan, strip on the …
1 - 10 June 2021 Read More
Recent rainfall totals
Recent rainfall totals
  • Moderate rainfall (between 50 - 100 mm) observed in southwest parts of South Sudan, southwestern part of Ethiopia, isolated part in White Nile and the Blue Nile in Sudan.
  • Light rainfall (between 25 - 50 …
1 - 10 June 2021 Read More
Recent rainfall anomalies
Recent rainfall anomalies
  • Much wetter than usual conditions observed over isolated in White Nile and Aljazeera regions of Sudan and western Bahr El gazal part of South Sudan.
  • Wetter than usual conditions observed over the southern part and …
1 - 10 June 2021 Read More
Recent rainfall totals
Recent rainfall totals

  • Moderate to heavy rainfall (between 100 - 200 mm) was not recorded in the third dekad of May 2021.
  • Moderate rainfall (between 50 - 100 mm) observed in southwest parts of South Sudan, southwestern part …
21 - 31 May 2021 Read More
Standardized Precipitation Index
Standardized Precipitation Index

  • Moderately wetter to severely wettest than usual conditions observed in isolated parts southeast Tanzania.
  • Usual rainfall conditions observed over most parts of north and central Sudan, western central and southern South Sudan, Eritrea, Djibouti, south …
21 - 31 May 2021 Read More
Recent rainfall anomalies
Recent rainfall anomalies

  • Much wetter than usual conditions was not observed in any part of the region.
  • Wetter than usual conditions observed southeast part of Tanzania and a few patchy parts of central South Sudan.
  • Usual rainfall conditions …
21 - 31 May 2021 Read More
Recent rainfall totals
Recent rainfall totals
  • Moderate to heavy rainfall between 100 - 200 mm observed in western parts and isolated areas of southern Ethiopia, in eastern and south-eastern Uganda; western, central and south-western Kenya; south-western Rwanda, south-eastern Somalia, and north-eastern …
1 - 10 May 2021 Read More
Recent rainfall anomalies
Recent rainfall anomalies
  • Much wetter than usual conditions observed over much of northern and eastern Ethiopia, Djibouti, southern Eritrea, north-western and central Somalia, eastern Uganda; western, central and southern Kenya; southern areas of Sudan, northern and south-eastern South …
1 - 10 May 2021 Read More
Standardized Precipitation Index
Standardized Precipitation Index
  • Moderately wet to severely wetter than usual conditions observed in much of Ethiopia, Rwanda, southern Sudan, northern and central South Sudan, central and north-western Somalia; much of western, central and southern Kenya; eastern Uganda, western …
1 - 10 May 2021 Read More
Recent rainfall totals
Recent rainfall totals
  • Moderate to heavy rainfall between 100 - 200 mm observed over Lake Victoria basin, isolated parts in central Kenya, highland of western Ethiopia, and southern Tanzania.
  • Moderate rainfall between 50 - 100 mm observed in …
20 - 30 April 2021 Read More
Standardized Precipitation Index
Standardized Precipitation Index
  • Moderately wetter to severely wetter than usual conditions observed over Lake Victoria basin, Blue Nile State in Sudan, north-eastern South Sudan; central, north-western and north-eastern Ethiopia; northern Somalia, and northern and south-western Tanzania.
  • Usual rainfall …
20 - 30 April 2021 Read More
Recent rainfall anomalies
Recent rainfall anomalies
  • Much wetter than usual conditions observed over Blue Nile state in Sudan, north-eastern South Sudan, central, north-western and north-eastern Ethiopia, northern Somalia, northern and south-western Tanzania, and isolated areas over highland of western Kenya.
  • Wetter …
20 - 30 April 2021 Read More
Recent rainfall anomalies
Recent rainfall anomalies
  • Much wetter than usual conditions observed in isolated parts of highland of central and northern Ethiopia, north-eastern Burundi and Rwanda, and western and south-eastern Tanzania.
  • Usual rainfall conditions observed over southern Uganda, south-western and north-western …
11 - 20 April 2021 Read More
Recent rainfall totals
Recent rainfall totals
  • Moderate rainfall between 50 - 100 mm observed in south-eastern and north-western Tanzania, most parts of Burundi, Rwanda, highland of south-western Ethiopia, lake Victoria basin sides of Kenya, and Uganda.
  • Light rainfall between 25 - …
11 - 20 April 2021 Read More