Contractors On High Alert As Kenya Met Forecasts Heavy Rainfall Across Five Key Regions

The Kenya Meteorological Department has released its weekly weather outlook for the period between February 17 and February 23, 2026, indicating that heavy rainfall will continue to affect five primary regions. According to the forecast, the Highlands West and East of the Rift Valley, the Lake Victoria Basin, the Rift Valley itself, and sections of the Southeastern Lowlands are expected to experience significant precipitation. While the northern and northeastern parts of the country remain largely dry and hot, the central and western belts face consistent afternoon and night showers that could complicate active construction operations.

For site managers and civil engineering firms, the timing of these rains presents immediate logistical challenges. The weatherman specified that counties such as Migori, Homa Bay, Kisumu, Siaya, and Kakamega are likely to see the most frequent rainfall. These areas often serve as hubs for ongoing infrastructure projects where earthworks and foundation pouring are currently underway. Heavy downpours, particularly those characterized by thunderstorms, frequently lead to waterlogging and soil instability, which can stall heavy machinery and compromise the integrity of open excavations.

Infrastructure developers working within the Central Highlands and Nairobi have also been advised to prepare for unevenly distributed rainfall. Although mornings are expected to stay mostly sunny, allowing for some window of productivity, the shift toward afternoon showers requires precise scheduling of moisture-sensitive tasks. The department noted that while some areas will record light to moderate showers, localized regions may experience higher accumulations that exceed the seasonal average for February.

The technical impact of such weather patterns on construction quality is a primary concern for project engineers. Excess moisture during this period can interfere with the curing process of concrete and the compaction of road sub-bases. For projects in high-altitude zones like Nyandarua and Kericho, where night temperatures are expected to drop below 10°C, the combination of cold and wet conditions further complicates the management of man-hours and the health of on-site labor forces.

In the Southeastern Lowlands, including Machakos and Makueni, the forecast suggests irregular rainfall episodes. Contractors in these regions face the risk of flash floods, which can wash away loose building materials and damage temporary site housing. The Kenya Meteorological Department emphasized that even in areas with long dry hours between rainfall episodes, the intensity of the showers could be sufficient to cause drainage blockages or erosion on vulnerable slopes.

Further afield, the Coastal region and the Northern counties such as Mandera and Turkana will continue to experience daytime temperatures exceeding 30°C. While these conditions avoid the complications of rain, the extreme heat poses its own set of risks, including heat stress for workers and rapid evaporation of water used in concrete mixing. The contrast in weather across the country necessitates a regional approach to project management, with firms in the wet zones increasingly relying on weather-tracking technology to minimize downtime.

As the country moves toward the March-to-May long-rains season, this current wet spell serves as a critical indicator for the construction industry. Analysts suggest that the frequency of these mid-February rains may lead to an early review of project timelines for government and private developments alike. Site supervisors are being urged to implement robust drainage solutions and secure equipment to mitigate the potential for costly delays or structural damage caused by the ongoing weather transition.