Madagascar Cyclone Exposure, El Niño & Vanilla Supply Risk: A Procurement Assessment (2026–2027)
How cyclones on Madagascar's northeast coast have moved vanilla supply and prices, what El Niño does and does not tell buyers, and how a second origin with a different harvest calendar spreads the risk.
Introduction
Most of the world's natural vanilla is grown on one stretch of coastline. That makes vanilla unusually exposed to a single weather event: one storm in the right place can change the price of a whole season.
This assessment uses documented events — reported by Reuters, Bloomberg and humanitarian agencies on ReliefWeb — and published climate research. It does not forecast the next cyclone season; nobody can do that reliably months in advance.
Why the SAVA Region Concentrates Risk
The SAVA region in northeast Madagascar — named after its towns Sambava, Antalaha, Vohémar and Andapa — is the heart of world vanilla production. Bloomberg described the region in 2024 as producing around 80% of the world's vanilla beans.
It also faces the open Indian Ocean during the November–April cyclone season. Vanilla vines are slow to replace: a newly planted vine typically takes around three years before it flowers, so serious damage can affect supply for more than one season.
Case Study: Cyclone Enawo, March 2017
Intense Tropical Cyclone Enawo struck northeast Madagascar in March 2017 and killed 78 people, according to Reuters. Bloomberg reported it as the worst storm to hit the country in 13 years.
Bloomberg cited David van der Walde of Aust & Hachmann estimating that up to 30% of the crop may have been damaged. Local damage was far worse: the mayor of Antalaha told Reuters around 95% of his area's crop had been destroyed, and the UN flash appeal estimated crop losses of 65% in the Antalaha and Sambava districts.
- Market effect — Prices were already rising before the storm; Enawo added to the squeeze that carried cured vanilla towards the $600/kg peak of 2017–2019 shown in our benchmark.
- Lesson — National crop-loss estimates hide very uneven local damage. A buyer tied to one district or one exporter can lose far more than the headline figure.
Case Study: Cyclone Gamane, March 2024
Tropical Cyclone Gamane made landfall on 27 March 2024 in the Vohémar district of SAVA, with gusts estimated up to 210 km/h according to the Red Cross (IFRC) final report. UNICEF reported 18 deaths, and flooding hit Vohémar, Sambava and Antalaha.
Unlike 2017, Gamane arrived in a market already well supplied after Madagascar's export price floor was lifted. Prices continued their correction through 2024 — showing that the same type of event can have very different price effects depending on stock levels.
- Lesson — Cyclone risk is a supply and logistics risk first (roads, ports, curing delays). Whether it becomes a price shock depends on the stock already in the market.
What El Niño Does — and Does Not — Tell Buyers
El Niño has been linked to higher prices in other tropical commodities such as cocoa, mainly through drought in West Africa. For Madagascar vanilla the link is less direct. Published research (Ash & Matyas, 2010) found that during warm ENSO (El Niño) phases, cyclones crossing the southwest Indian Ocean tended to follow more southward tracks, while neutral or cool phases favoured more westward tracks towards Madagascar.
That is a statistical tendency over many seasons, not a rule for any single year. A 2026 EGU study of 45 seasons found the Indian Ocean Dipole showed little to no relationship with cyclone metrics, while the Madden–Julian Oscillation mattered more. In short: climate signals can inform how much buffer stock you hold, but they cannot tell you whether SAVA will be hit.
Hedging with a Second Harvest Calendar
Uganda sits on the equator and has two vanilla harvests a year. The Ugandan government sets harvest start dates from 15 June and 15 December, and the exporters' association VANEX describes seasons in June–August and December–February.
Because Uganda is far inland from the Madagascar cyclone belt and harvests on a different calendar, it can act as a partial hedge. UN Comtrade data shows the US imported 272 tonnes of Ugandan vanilla in 2024 — the clear second origin. Indonesia and Papua New Guinea add further, smaller volumes.
- Different profile — Ugandan and Indonesian beans differ from Madagascar Bourbon in moisture and flavour. Qualify a second origin in advance; switching after a storm is too late.
A Procurement Checklist for 2026–2027
None of these steps removes risk, but each one limits how much a single storm can disrupt your supply.
- Split origins — Keep at least two approved origins with signed-off specifications (moisture, vanillin, grade).
- Split exporters — Within Madagascar, avoid relying on one district or one exporter.
- Time cover — Watch the November–April cyclone season and consider extra cover before it, rather than after a landfall.
- Model landed cost — Compare origins on a delivered basis using our Landed Cost Calculator and Pricing Benchmark.