
Inmet's November agroclimatological bulletin projects soil water storage below 20% of available capacity in the Northeast semi-arid and coastal belt for November 2026 to January 2027. The deficits are highest in parts of Maranhão, Piauí, Ceará, Rio Grande do Norte, Paraíba and the Submédio São Francisco.
The bulletin warns the shortfall could delay corn planting and affect soybean flowering in Matopiba.
A dry start to the season in Matopiba could cut Brazilian corn and soybean output from the northeast, adding modest support to soybean and corn prices. The effect is a seasonal forecast, so the price impact is likely limited unless rains fail again.
After 1,079 past bullish weather events, Soybeans moved a median +0.3% over 5 sessions (54% higher; middle half -1.4% to +2.0%), and +0.9% over 20.
After 1,465 past bullish weather events, Corn moved a median +0.2% over 5 sessions (54% higher; middle half -1.4% to +1.9%), and +0.9% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.