Weather · Kiambu County
Weather Forecast for Kiambu, Kenya
Kiambu grows on the city's doorstep — Ruiru, Kikuyu, Karuri, Limuru and the Thika highlands — where intensive vegetables run in fast cycles and the market punishes a week lost to weather. The rains here are generous and the bursts are hard; the dashboard tracks when the bursts land and what the dry gaps between them ask of the irrigation system.
Use the location bar below to search your exact farm — the dashboard loads for the point you pick, and the panels update to it. Current Weather is now; the Rainfall Forecast is the next 24 hours and the week; the Irrigation Weather Outlook is the LOW / MODERATE / HIGH attention call; and the Farm Activity Outlook covers field work, spraying, planting, transplanting, harvesting and irrigation. Select your crop in What Are You Growing? to read the same weather through its lens — the forecast never changes, only the interpretation.
Common farm areas:
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Current Weather
What This Means for Your Farm
Rainfall Forecast
7-Day Farm Forecast
Irrigation Weather Outlook
Water Loss Outlook
Farm Activity Outlook
What Are You Growing?
Select your crop to see how the current weather interacts with it. The forecast never changes — only the interpretation does.
Weather Alerts
Location
Weather and farming in Kiambu
Kiambu's farming weather is highland weather with a commercial tempo. The county's elevation runs from about 1,300 m around the lower settlements to well over 2,000 m on the Thika-highland side, and the rainfall follows: the higher, western farms generally take more rain than the lower eastern side, and the difference between a farm in Karuri and one in the Limuru upper reaches can be the difference between a rain-fed month and an irrigated one. The two rainy seasons are the calendar, but the working rhythm is set by what happens between them — the short dry gaps where a drip line on a timer is the difference between holding a crop and losing a cycle.
Two conditions show up on the dashboard and matter more here than in most counties. Afternoon convective storms in the wet months: they move quickly, so the hourly chart is the panel to watch on those days, and a 4 pm storm can make a morning spray decision obsolete by lunch. And humidity and canopy wetness: with vegetables grown close together in fast rotations, a week of rain plus high humidity is the classic setup for the leaf and fruit diseases that end a crop early — the dashboard's rainfall and humidity data is the early-warning layer for that.
Served areas from this point include Ruiru, Kikuyu, Karuri, Limuru and the Juja-to-Thika corridor. Farms on the higher side should search their specific location — the elevation difference changes the rain totals meaningfully.
Crops this outlook reads for
From the What Are You Growing? selector on this page, the crops most worked here read the same weather with their own framings: Kale, Tomatoes, Onions. The full list — sixteen crops — is available in the selector, and the crop pages carry the deeper agronomy.
FAQ
Weather questions from Kiambu farms
My farm is on the Thika highland side — will the Kiambu reading be close enough?
Use the search bar and pick your specific location. The default point represents central Kiambu, and the highland farms around Limuru and the upper Thika corridor sit higher and wetter — the rain totals on the dashboard can be materially different. A two-second search gets you the right coordinates.
What does the dry-spell alert mean for a fast vegetable cycle?
It means the model shows at least four consecutive days with little rain and low rain chances starting from today. In a 6–8 week kale or cabbage cycle, that is long enough to matter: the stress shows in the crop before it shows in a soil test, which is why the alert pairs with a reminder to check soil moisture rather than wait for visible wilting. In Kiambu's between-rains gaps, this is the most useful alert on the page.
The rain is falling in bursts — does the daily total tell me what my beds got?
Partly. The daily total is the model's estimate for the point, and burst rain is where models are weakest — a burst can dump half the total in ten minutes. For the irrigation call, the total plus the probability together are the guide, and the field check settles it: burst-wetted dry soil can look wet at the surface and be dry at 15 cm, which is exactly the case the outlook's 'check before your normal cycle' language is aimed at.
How should I read the irrigation outlook when the week is mixed — some rain, some not?
Mixed weeks are where the MODERATE level earns its keep. The outlook is HIGH when the next 24 hours look wet (the field may take on water itself), LOW when it is clearly dry, and MODERATE in between — which is the honest state for a mixed week. The practical reading: MODERATE means check the soil before committing to a full cycle, because a rain event you didn't bank on can turn a needed cycle into a waterlogged one.
Does the forecast help time harvest for the market?
It helps in the same way any 7-day view helps: for the shape of the week, not the script. If the dry window falls on your harvest-ready days, that is the week to market the crop; if rain sits over your picking days, harvest what will keep and hold the rest. The 7-day panel shows the rain days at a glance, which is the decision-relevant half of it for market timing.
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