October 2026 will usher Kenya into the traditional short rains season with significant precipitation. The Intertropical Convergence Zone moving southward across East Africa will trigger widespread rainfall nationwide.
Mean temperatures will rise above normal averages throughout the month and into December. Humidity and cloud cover begin increasing as the cool June-July-August season transitions definitively.
Coastal Counties Face Heaviest Rainfall Concentrations
Kwale, Mombasa, Kilifi, Lamu and Mandera counties will experience above-average rainfall with highest probabilities. Partial rainfall coverage extends through Taita Taveta, Tana River, Garissa and Wajir counties eastward.
The coastal and eastern regions position themselves as rainfall hotspots during October 2026. These areas will receive substantial precipitation from the transitional weather pattern shift.
Central Highlands Receive Moderate to Above-Average Precipitation
Nairobi, Kiambu, Murang’a and Kirinyaga will experience above-average rainfall distributions during October. Upper central counties including Embu, Tharaka-Nithi, Meru and Nyeri face similar precipitation forecasts.
Isiolo, Nyandarua and Nakuru will also receive moderate to above-average rainfall amounts. The highlands benefit from orographic rainfall effects during this seasonal transition period.
Western Zones Face Mixed Precipitation Outlook
Kakamega, Kisumu, Kisii, Siaya and Vihiga expect near-average to above-average rainfall levels. Bungoma, Busia and Trans Nzoia will similarly experience moderate precipitation distributions throughout October.
Homa Bay and Nyamira counties complete the western rainfall picture with moderate expectations. This region transitions smoothly into the long-term seasonal rainfall pattern.
Temperature Patterns Remain Above Historical Averages
Highlands experience coolest conditions between 15°C and 20°C depending on elevation variations. Arid and semi-arid lowlands will be substantially warmer, exceeding 28°C regularly throughout October.
The warming trend continues through November and December as the season progresses. Coastal counties face particularly high warming probabilities during the three-month seasonal period.
Three-Month Seasonal Forecast Predicts Widespread Above-Average Rainfall
Kenya Met’s October-November-December outlook covers 41 counties expecting above-average precipitation patterns. Baringo through Wajir counties face higher rainfall probabilities maintaining throughout the season.
West Pokot, Samburu and Marsabit will experience above-average rainfall distributions nationwide. This extended forecast shapes agricultural planning and water management strategies across Kenya.
