Brazilian Potato Prices Jump 24.1% in September as Rains Stall the Harvest
The consumer price of potatoes in Brazil rose 24.07% during September 2026, according to the IPCA — the country's official broad consumer price index — making the potato one of the fastest-rising foods of the month, behind only tomatoes at 37.76%, Argenpapa reported on October 9.
The Brazilian Institute of Geography and Statistics (IBGE) attributes part of the increase to adverse weather in the main producing regions. Rains made it difficult for machinery to enter the fields and slowed the harvest pace, temporarily limiting the volume available in wholesale markets and pushing consumer prices up. Cold weather compounded the problem for other vegetables: low temperatures delayed tomato ripening, contributing to that product's even steeper increase.
Potatoes were not alone. Onion prices rose 10.14% in September, rice 4.56% and meat 0.63%. The food and beverages group as a whole increased 0.83% month-on-month, with food consumed at home up 0.96% — ending three consecutive months of decline in Brazilian household food prices. Specialists quoted in the coverage note that excessive rainfall hits fruits and vegetables hardest, interrupting field work, complicating transport and raising post-harvest losses.
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For the potato chain specifically, the September spike is a supply-shock story rather than a demand shift — and its duration depends on the coming weeks' weather. Brazil's main potato-producing states (São Paulo, Minas Gerais, Paraná) run finely balanced harvest calendars in the spring window; a two- to three-week delay concentrates arrivals and typically unwinds part of the price increase once field access normalises. In the São Paulo wholesale market, washed Asterix had actually fallen 12.9% to R$117.33 per 50-kg bag at the start of October, an early sign that wholesale pressure may already be easing even as the official consumer index catches the September peak.
Growers, meanwhile, face the classic wet-harvest penalty: tubers lifted from saturated soils carry higher rot risk in transit and storage, so part of the delayed crop may never reach retail quality. Retailers and consumers will feel the balance of those two forces — pent-up supply arriving, minus quality losses — through October.
Source: Argenpapa, 09.10.2026
