Kenya Met Warns of Rainfall in 35 Counties This Week

The Kenya Meteorological Service Authority (KMSA) has predicted rainfall across 35 counties this week. 

In a weather forecast on Tuesday, September 22, the authority said rainfall is expected to be experienced mainly in the Coast, Northeastern, Western, Central and Rift Valley regions.

“Rainfall is expected over several parts of the country, especially over the Coast, Northeastern, Western, Central and parts of the Rift Valley regions,” read the forecast 

The counties expected to experience rainfall include: Kwale, Mombasa, Kilifi, Tana River, Lamu, Garissa, Mandera, Wajir, Marsabit, Murang’a, Nairobi, Nyandarua, Nyeri and Tharaka-Nithi. 

Others are Kitui, Makueni, Narok, Baringo, Bomet, Bungoma, Busia, Elgeyo-Marakwet, Homa Bay, Kakamega, Kericho and Kisii. 

Kisumu, Migori, Nakuru, Nandi, Nyamira, Siaya, Trans Nzoia, Uasin Gishu and Vihiga will also experience showers during the period. 

KMSA also predicted high daytime temperatures exceeding 30°C in Kilifi, Tana River, Lamu, Garissa, Wajir, Isiolo, Marsabit and Turkana counties. 

Parts of Meru, Tharaka Nithi, Kirinyaga, Murang’a, Nyeri, Nakuru, Narok, Taita Taveta and Kajiado Counties will experience cold nights, with minimum average temperatures falling below 10°C.

This comes weeks after Kenya Met predicted below-average rainfall in several counties during September 2026, with dry conditions expected to persist across large parts of the country.

The forecast, issued on Wednesday, September 2, indicated that rainfall patterns in September will vary across the country, with some areas expected to receive near-average rainfall while others experience generally sunny and dry conditions.

The authority said September is a transition month between the generally dry June-July-August season and the October-November-December short rains.

"September marks the climatological transition period from the June-July-August season that is generally dry over most parts of the country, to the October-November-December short rainfall season," the forecast read.

KMSA also highlighted possible effects on transport and infrastructure, noting that intermittent rainfall in Kwale, Lamu, Mombasa and Kilifi could make roads slippery and disrupt construction activities.

Further, the authority said Strong winds and dry weather could generate dust storms, potentially aggravating respiratory problems and increasing the risk of eye infections.