KAIMOSI

Kaimosi is a black tea estate situated in the Kaimosi region of Kenya, at an elevation of 1,665 metres. The estate is operated by Williamson Tea Kenya PLC and is recorded as a supplier to Morrisons, the British supermarket chain.

Terroir & Climate

At 1,665 metres above sea level and positioned near the equator, Kaimosi occupies a mid-to-high elevation zone where Kenyan tea estates typically benefit from moderate temperatures and reliable rainfall distributed across much of the year. Estates at this altitude generally experience cooler nights than lowland growing areas, a factor that tends to slow leaf maturation and can contribute to the development of more complex flavour compounds in the harvested flush.

The Kaimosi region lies within Kenya's western tea-growing belt, where volcanic soils and consistent cloud cover are common. These conditions typically favour year-round production, though estates in this latitude range often see peak quality during the periods following the long and short rains. The interplay of altitude, equatorial light, and soil drainage generally shapes the character of leaf grown in this environment.

Tea Produced

Kaimosi produces black tea. Kenyan black teas from estates in this elevation band typically yield a brisk, full-bodied cup with bright coppery colour and a clean, malty character. The mid-altitude growing conditions tend to favour teas with good strength and astringency, qualities that make them well-suited to blending as well as single-origin retail packs. Estates in western Kenya often produce leaf with a slightly softer profile than the more assertive teas from higher-elevation zones, though much depends on processing and seasonal variation.

Supply Chain & Market Position

Kaimosi is recorded as a supplier to Morrisons, one of the United Kingdom's major supermarket chains. This relationship places the estate within a vertically integrated supply chain that connects Kenyan origin directly to a high-volume retail customer. Supplying a mainstream British grocer typically requires consistent quality, traceability, and scale, indicating that Kaimosi's output meets the standards expected by a buyer serving millions of consumers. The link to Morrisons also suggests the estate's production is oriented toward the retail packet tea market rather than commodity auction sales.

• Recorded supplier to  Morrisons

Operator

The estate is operated by Williamson Tea Kenya PLC, a significant player in Kenya's tea sector. Williamson Tea Kenya operates two other estates recorded in our directory, indicating a portfolio presence across multiple growing regions in the country. This multi-estate structure typically enables economies of scale in processing, quality control, and market access.

Location & Neighbouring Estates

KAIMOSI lies at 0.1256, 34.8445 in Kaimosi, Kenya. Its 1665 m elevation is the 168th highest of 186 estates we map in Kenya. The nearest estates in the TeaTrade directory, measured point-to-point from these coordinates, are:

• Mudete Tea Factory — 8.5 km away · Gisambai - Mudete Rd
• Chepkumia Tea Factory — 13 km away · Nandi
• Chebut Kaptumo Tea Co Ltd. — 29 km away · Kisumu Road
• CHEBUT — 29 km away · Kapsabet
• KAPTUMO — 29 km away · Kapsabet

Estates at a Similar Altitude to KAIMOSI

Elevation shapes how slowly leaf matures, so we match KAIMOSI (1,665 m) with estates within 150 m of its height that are not its neighbours. Each is shown with its own 2025 climate. KAIMOSI recorded 1,764 mm in 2025, 7% less than the 1,907 mm average across these estates: at the same height, local weather and exposure matter as much as elevation.

Estate	Where	Elevation	Rain 2025	Mean high
Himalayan Shangri-La	Mechi Hwy, Nepal	1,661 m	2,238 mm	18.2 °C
Theta Ndarugu Tea Co Ltd.	Kenya, Kenya	1,670 m	769 mm	25.5 °C
GIANCHORE	Moi Avenue, Kenya	1,670 m	769 mm	25.5 °C
Arivikad	Kerala, India	1,646 m	2,773 mm	21.3 °C
Rancabali Tea Estate	Bandung Regency, Indonesia	1,686 m	2,986 mm	21.5 °C

KAIMOSI Compared with Kenya

In Kenya, KAIMOSI is wetter than 72% of the others by 2025 rainfall; lower than 90% of the others by elevation; warmer than 76% of the others by daytime temperature. The table sets KAIMOSI against the 185 other estates we map in Kenya, so you can see whether it is typical for its country or an outlier.

Measure	KAIMOSI	Country median	Country range
Elevation	1,665 m	1,990 m	821 to 2,790 m
Annual rainfall (2025)	1,764 mm	1,518 mm	754 to 2,070 mm
Mean daily high	24.5 °C	22.4 °C	16.8 to 30.2 °C
Mean overnight low	14.8 °C	12.0 °C	8.5 to 19.8 °C

Observed Climate at KAIMOSI (2025)

ERA5 reanalysis data modelled for KAIMOSI’s coordinates recorded 1,764 mm of precipitation across calendar year 2025. The wettest month was April (269 mm) and the driest was February (9 mm). Daytime highs averaged 24.5 °C and overnight lows 14.8 °C over the year; February was the warmest month and July the coolest.

Metric	2025 value
Annual precipitation	1,764 mm
Wettest month	April (269 mm)
Driest month	February (9 mm)
Mean daily high	24.5 °C
Mean overnight low	14.8 °C

Frequently Asked Questions

Where is KAIMOSI located?

KAIMOSI is in Kaimosi, Kenya, at coordinates 0.1256, 34.8445, at an elevation of about 1665 metres.

Who operates KAIMOSI?

KAIMOSI is operated by Williamson Tea Kenya PLC, according to public supply-chain records.

What type of tea does KAIMOSI produce?

KAIMOSI is recorded as producing black tea.

Which buyers does KAIMOSI supply?

Public supplier disclosures record KAIMOSI as supplying Morrisons.

How much rain does KAIMOSI receive?

ERA5 reanalysis data for the estate's coordinates recorded 1,764 mm of precipitation in 2025, peaking in April (269 mm).

How does KAIMOSI compare with estates at a similar elevation?

KAIMOSI recorded 1,764 mm in 2025, 7% less rain than the 1,907 mm average of estates at a similar elevation.

Data sources: public supply-chain disclosures (Ethical Tea Partnership member lists, Rainforest Alliance certificate holders and retailer supplier disclosures); climate figures are ERA5 reanalysis modelled for the estate’s coordinates via Open-Meteo (calendar year 2025); coordinates and elevations from geocoded records. Spotted an error? Email [email protected].