Gangasiri

Gangasiri is a tea estate located in the Southern Province of Sri Lanka, at an altitude of just 62 metres above sea level. The estate produces black tea and is recorded as a supplier to Finlays, the international tea and horticulture company. The operator of Gangasiri is not currently on public record.

Terroir & Climate

At 62 metres, Gangasiri occupies one of the lowest altitudes at which tea is commercially cultivated in Sri Lanka. Estates at this elevation, particularly those situated near the southern coast at approximately 6°N latitude, typically experience warm, humid conditions year-round, with less pronounced diurnal temperature variation than high-grown counterparts. The proximity to sea level generally accelerates the growth cycle, often resulting in faster leaf development and higher yields per hectare.

Low-grown Sri Lankan estates in the Southern Province tend to benefit from the southwest monsoon between May and September, which brings substantial rainfall, whilst the inter-monsoonal periods can be marked by shorter dry spells. This warm, consistent climate ordinarily encourages vigorous vegetative growth, though it can also mean that flavour compounds in the leaf develop differently compared to the slower maturation typical of high-elevation gardens.

Tea Produced

Gangasiri produces black tea. Estates at this low elevation in southern Sri Lanka typically yield teas with a full body, robust character, and pronounced strength rather than the delicate complexity associated with high-grown leaf. The cup profile often tends toward malty, earthy, or brisk notes, with good colour and a straightforward, assertive flavour that performs well in blends. These low-grown teas are frequently valued by blenders for their consistency, body, and ability to carry milk.

Supply Chain & Market Position

Gangasiri is recorded as supplying Finlays, a vertically integrated business with extensive tea-sourcing operations across Sri Lanka and a global customer base that includes major retail and foodservice brands. Supply to Finlays suggests that Gangasiri's output enters established international blending and distribution channels, likely destined for volume markets where consistent, full-bodied low-grown Ceylon tea is in demand. This relationship positions the estate within the mainstream of Sri Lanka's commercial black-tea trade.

• Recorded supplier to  Finlays

Location & Neighbouring Estates

Gangasiri lies at 6.2757, 80.4062 in Southern Province, Sri Lanka. Its 62 m elevation is the joint 58th highest of 134 estates we map in Southern Province. The nearest estates in the TeaTrade directory, measured point-to-point from these coordinates, are:

• Ransavi — 1.1 km away
• Mahendra — 3.9 km away
• Liyonta — 4.9 km away
• Derangala — 5.3 km away
• Dellawa — 6.0 km away

Estates at a Similar Altitude to Gangasiri

Elevation shapes how slowly leaf matures, so we match Gangasiri (62 m) with estates within 150 m of its height that are not its neighbours. Each is shown with its own 2025 climate. Gangasiri recorded 3,443 mm in 2025, 64% more than the 2,099 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
Attareekhat Tea Estate	Darrang, India	62 m	2,556 mm	29.5 °C
Hunan Xiangfeng Tea Factory	Changsha County, China	63 m	1,236 mm	24.1 °C
Andaradeniya Estate, Nivithigala	Sabaragamuwa Province, Sri Lanka	61 m	3,214 mm	30.5 °C
Karotoa Bohumukhi somobay somiti Factory Ltd.	Panchagarh, Bangladesh	60 m	2,252 mm	29.0 °C
Hunan Jinjin Tea Factory Co., Ltd	Changsha, China	64 m	1,236 mm	24.1 °C

Gangasiri Compared with Southern Province

In Southern Province, Gangasiri is wetter than 89% of the others by 2025 rainfall; higher than 56% of the others by elevation; warmer than 68% of the others by daytime temperature. The table sets Gangasiri against the 133 other estates we map in Southern Province, so you can see whether it is typical for its region or an outlier.

Measure	Gangasiri	Region median	Region range
Elevation	62 m	46 m	6 to 806 m
Annual rainfall (2025)	3,443 mm	3,022 mm	2,210 to 3,589 mm
Mean daily high	30.0 °C	29.8 °C	25.9 to 30.5 °C
Mean overnight low	22.8 °C	22.6 °C	18.2 to 24.1 °C

Observed Climate at Gangasiri (2025)

ERA5 reanalysis data modelled for Gangasiri’s coordinates recorded 3,443 mm of precipitation across calendar year 2025. The wettest month was November (477 mm) and the driest was February (73 mm). Daytime highs averaged 30.0 °C and overnight lows 22.8 °C over the year; March was the warmest month and January the coolest.

Metric	2025 value
Annual precipitation	3,443 mm
Wettest month	November (477 mm)
Driest month	February (73 mm)
Mean daily high	30.0 °C
Mean overnight low	22.8 °C

Frequently Asked Questions

Where is Gangasiri located?

Gangasiri is in Southern Province, Sri Lanka, at coordinates 6.2757, 80.4062, at an elevation of about 62 metres.

What type of tea does Gangasiri produce?

Gangasiri is recorded as producing black tea.

Which buyers does Gangasiri supply?

Public supplier disclosures record Gangasiri as supplying Finlays.

How much rain does Gangasiri receive?

ERA5 reanalysis data for the estate's coordinates recorded 3,443 mm of precipitation in 2025, peaking in November (477 mm).

How does Gangasiri compare with estates at a similar elevation?

Gangasiri recorded 3,443 mm in 2025, 64% more rain than the 2,099 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].