When do the long rains and short rains happen in Kenya?

In most of Kenya the long rains fall roughly March to May and the short rains October to December, though exact timing varies by region and shifts year to year. Western Kenya has a longer, more continuous wet season, while arid and semi-arid areas depend heavily on the short rains. Always confirm the local onset before planting.

What is the best time to plant maize in Kenya?

In the high-rainfall zones of the Rift Valley and western Kenya, plant maize with the onset of the long rains from March, and dry-plant just before the rains arrive so seed germinates with the first reliable showers. In bimodal areas you can also plant a short-rains crop from October. Match the variety maturity period to your season length.

Should I plant before or after the rains start in Kenya?

Dry-planting just before the rains is often best because seed is in place to use the very first moisture, giving the crop a full season. The risk is a false start where early showers germinate seed and then dry up. Where onset is unreliable, wait for the rains to establish before planting, especially in semi-arid zones.

Which crops are best for the short rains in Kenya?

The short rains suit faster-maturing and drought-tolerant crops: green grams, cowpeas, beans, sorghum, millet, early-maturing maize, and many vegetables. In semi-arid counties the short rains are often the more reliable season, so drought-tolerant crops are the safer choice than long-season maize.

Can I farm in Kenya during the dry season?

Yes, with irrigation. Many horticulture farmers grow vegetables, tomatoes, and onions in the dry months to hit high off-season prices when open-field supply is low. Without irrigation, dry-season cropping is risky, so this window is best for farmers with drip, boreholes, or reliable water.

Why is planting timing so important in Kenya?

Rainfall is the main driver of yield for most Kenyan farmers, so planting at the right moment ensures the crop gets moisture through its critical growth and flowering stages. Planting too early risks a false start; too late means the crop runs out of rain before it matures. Good timing often matters more than the amount of fertiliser you apply.

Kenya Planting Calendar: What to Plant When, by Region & Season

A reliable planting calendar is one of the most valuable tools a Kenyan farmer can have. Because most farming here depends on rainfall, planting at the right moment determines whether your crop gets moisture through its critical stages — or runs dry before harvest. This Kenya planting calendar explains the long rains and short rains, breaks timing down by region, and gives a season table showing what to plant when.

Kenya's two rainfall seasons

Most of Kenya has a bimodal rainfall pattern — two wet seasons a year:

Long rains: roughly March to May, the main growing season for many staple crops.
Short rains: roughly October to December, a second cropping window, and often the more reliable season in drier areas.

Western Kenya is an exception, with a longer, more continuous wet season from around March through to September or October, allowing continuous cropping. Timing shifts from year to year, so treat these as guides and always confirm the local onset before you commit seed.

Why timing matters more than you think

For rain-fed farmers, planting date is often the single biggest yield factor — bigger than fertiliser rate or variety. The goal is to have your crop's most water-sensitive stages (germination, flowering, grain fill) line up with reliable rainfall.

Plant too early and you risk a false start, where early showers germinate seed that then dies in a dry spell.
Plant too late and the crop runs out of rain before it matures, cutting yield sharply.

Many experienced farmers dry-plant just before the expected onset, so seed is in place to use the very first reliable rains and get a full growing season.

Planting by region

Kenya's diverse zones mean no single calendar fits everyone. Here is a regional guide.

High-potential highlands (Central, parts of Rift Valley)

Cool, reliable rainfall. Long rains from March support maize, potatoes, beans, and highland vegetables like cabbage and kale. A short-rains crop of vegetables and beans follows from October.

North Rift grain basket (Trans Nzoia, Uasin Gishu, Nakuru)

The maize belt. Long-season maize is planted with the long rains from around March–April as a single main crop, harvested from October. Wheat and barley also feature here.

Western Kenya (Kakamega, Bungoma, Busia)

Longer, more continuous rains allow two maize crops and continuous cropping of beans, groundnuts, and vegetables. Main planting from March, with a second crop possible around August–September.

Eastern and lower midlands (Machakos, Makueni, Kitui)

Semi-arid. The short rains (October–December) are often the more reliable season. Focus on drought-tolerant crops — green grams, cowpeas, sorghum, millet, and early-maturing maize.

Coast (Kilifi, Kwale, Taita)

Long rains from around April are the main season for maize, cowpeas, cassava, and coconuts, with a short-rains crop of vegetables and pulses.

Arid and semi-arid lands (ASALs)

Rainfall is scarce and erratic. Farming centres on the short rains and on very drought-tolerant crops, pasture, and livestock, with irrigation where water is available.

Month-by-month planting calendar

This season table summarises typical timing across much of bimodal Kenya. Adjust to your local rainfall onset.

Month	Long-rains zones	Short-rains / semi-arid zones
January	Land preparation, source inputs	Harvest short-rains crop; land prep
February	Dry-plant maize; prepare seedbeds	Prepare land; source drought-tolerant seed
March	Plant maize, beans, potatoes as rains start	Plant early where rains begin
April	Continue planting; top-dress; weed	Weed; manage moisture
May	Late planting of short-season crops	Harvest early crops
June	Weeding, pest scouting, top-dressing	Land prep; irrigated vegetables
July	Crop management; irrigated horticulture	Dry-season vegetables (with water)
August	Western: second maize crop	Prepare for short rains
September	Harvest long-rains crop; land prep	Prepare land; source seed
October	Plant short-rains vegetables & beans	Plant green grams, sorghum, millet, maize
November	Weed, top-dress short-rains crop	Weed and manage the main season crop
December	Continue management; plan next season	Crop management; scout for pests

What to plant when: crop timing

Maize — long rains (March) in high-potential zones; early-maturing varieties for short rains and semi-arid areas.
Beans — both seasons; fast-maturing, fits between longer crops.
Potatoes — highland long and short rains.
Green grams & cowpeas — short rains in semi-arid counties; drought-tolerant and quick.
Sorghum & millet — short rains and ASALs; reliable where maize struggles.
Vegetables (kale, cabbage, tomatoes) — both rainy seasons, and dry season with irrigation for premium off-season prices.
Wheat & barley — long rains in the North Rift.

Matching variety to season length

Choosing a variety whose maturity period fits your season is as important as the planting date. A long-season maize planted late will not finish before the rains stop. In shorter or less reliable seasons, choose early-maturing and drought-tolerant varieties so the crop completes its cycle on available moisture.

Planning inputs and markets around the calendar

The planting calendar is also a buying and selling calendar:

Buy inputs early — seed, fertiliser, and tractor hire are cheaper and available before the season peaks.
Prepare land in the dry months so you can plant the moment rains arrive.
Anticipate price cycles — prices fall at harvest gluts and rise in off-season. Growing off-season vegetables with irrigation targets those higher prices.

Check current and seasonal price trends on Agrisoko market intelligence so you can time both planting and selling to your advantage.

Common timing mistakes

Waiting too long after the rains establish, shortening the season.
Planting long-season varieties late, so they run out of rain.
Ignoring local onset and following a fixed date every year.
Buying inputs at peak season when prices and shortages bite.
Growing water-hungry crops in semi-arid zones instead of drought-tolerant ones.

Get started with Agrisoko

A good planting calendar turns unpredictable weather into a plan. Confirm your local rainfall onset, match variety to season length, prepare land early, and line up inputs and markets around the season.

Explore crop-specific guides on Agrisoko Learn, track price cycles on market intelligence, and when your harvest is in, sell it on Agrisoko to reach buyers across the country.