The Kenya Meteorological Department (Kenya Met) has issued an alert indicating increased rainfall across five regions of the country in the coming week.

In its latest weekly forecast released on Wednesday, April 15, 2026, the agency said the Highlands East of the Rift Valley is a key area of concern, noting that 10 counties, including Nairobi, Kiambu, and Murang’a, are likely to be most affected.

More counties expected to experience rainfall include Nyandarua, Laikipia, Nyeri, Kirinyaga, Murang’a, Embu, Meru, and Tharaka-Nithi, all under enhanced rainfall watch this week.

“Rainfall is expected over several parts of the country, with enhanced intensity over the Highlands East of the Rift Valley, including Nairobi,” Kenya Met said.

On the other hand, one area drawing close attention is the River Tana, which runs through several counties and carries a well-documented history of flooding during heavy rainfall seasons. 

The weatherman confirmed in its River Tana Flood Watch Update that moderate rainfall is expected over the basin during the next seven days, prompting continued monitoring of water levels at the Garissa station

Streamflow data indicate that the average water level at Garissa is not expected to exceed 2.5 metres over the next 7 days, remaining well below the threshold that typically triggers significant downstream flooding.

“River Tana Flood Watch Update by the Kenya Meteorological Department indicates that moderate rainfall is expected over the basin during the next 7 days,” the department stated.

However, with this in mind, the department offered reassurance to communities along the Tana corridor.

“There is no risk of flooding within the forecast period”; hence, the residents should not be worried.

Temperature outlook

Based on nationwide temperatures, Kenya Met states that temperatures will vary sharply by location. Residents in Kilifi, Mombasa, Kwale, Tana River, and Lamu Counties will experience daytime highs above 30 degrees Celsius for most of the week.

Additionally, the counties of Machakos, Makueni, Kitui, Taita Taveta, and Kajiado, along with Mandera, Wajir, and Garissa, are also expected to record similar daytime temperatures.

Meanwhile, the department has noted that nights will be significantly colder across the Central Highlands, Central Rift Valley, and regions surrounding Mount Kilimanjaro, with temperatures projected to fall below 10°C.

These conditions are anticipated in counties such as Kiambu, Murang’a, Nyeri, Nyandarua, Kirinyaga, Embu, Meru, Tharaka-Nithi, Laikipia, as well as Nairobi.

At the Coast, light winds and relatively small waves ranging between 2 and 3 feet are expected throughout the coming week.

Afternoon hours may bring slightly choppier seas, but overall visibility will remain moderate, creating generally favourable conditions for marine activities.