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Atlas/Weather forecast/Siaya

Siaya County weather forecast

Kenya Met’s forecast issued 5 October 2026 gives Siaya about 43 mm of rain on average over the next 7 days (19 mm in the driest parts to 61 mm in the wettest), and about 119 mm over 14 days.

Oct–Dec 2026 short rainsKenya Met forecast issued 5 October 202627th wettest of 47 counties this week

Rain expected in Siaya

Average across the county, with the range from its driest to its wettest parts.

PeriodRangeAverage
Next day1–4 mm3 mm
Next 3 days6–18 mm13 mm
Next 7 days19–61 mm43 mm
Next 14 days63–178 mm119 mm

Next 7 days by sub-county

Sub-countyAverage rain
Ugenya59 mm
Ugunja54 mm
Gem52 mm
Alego Usonga48 mm
Rarieda42 mm
Bondo34 mm

Rainfall forecast

Daily rainfall forecast for your ward

Siaya weather: questions and answers

Will it rain in Siaya this week?

Yes. Kenya Met’s forecast issued 5 October 2026 gives Siaya about 43 mm of rain on average over the next 7 days, up to 61 mm in the wettest parts. About 13 mm of it is expected in the first 3 days.

How much rain will Siaya get in the next two weeks?

About 119 mm on average across Siaya over the 14 days from 5 October 2026 (63 mm in the driest parts to 178 mm in the wettest).

Which parts of Siaya will get the most rain this week?

Over the next 7 days the most rain is expected in Ugenya (59 mm), Ugunja (54 mm) and Gem (52 mm), and the least in Bondo (34 mm).

Is Siaya expecting more rain than usual this season?

Yes. Kenya Met’s seasonal forecast for 5 Oct to 15 Nov 2026 gives Siaya about 153% of its usual rain for those weeks.

How can I see the forecast for my ward in Siaya?

Choose Siaya, then your sub-county and ward, in the forecast on this page. It shows Kenya Met’s daily rain for the weeks ahead and how each period compares with the usual rain for those dates.

Where does this forecast come from?

From Kenya Met (the Kenya Meteorological Service Authority), through its Kenya Farm-to-Forecast pilot. The forecast is updated every morning; this page shows the one issued 5 October 2026.

More for Siaya

El Niño in Siaya: flood and landslide risk, the wards most at risk and what to plant this season.

Weather forecast for other counties