A weaker real encourages Brazilian exporters to sell dollar-priced commodities such as sugar and coffee because it raises their returns in local currency terms.
Dealers noted buying emerged around the day's low of 15.55 cents a lb, a level where it also found support on Friday and in early February.
Datagro expects the center-south sugar cane crop to fall to 586 million tonnes in 2021/22 from 607 million tonnes in 2020/21 due to unfavorable weather.
It projected ethanol production to fall to 29.4 billion liters versus 30.6 billion liters in the previous season.
Tereos did not include a third-quarter net profit figure, having reported a 6 million euro net loss for its first half.
The Group is expecting its 2021/2022 adjusted EBITDA to be in the lower end of the previously communicated outlook (between 600 and 700 million euros).
The sugar included 205,600 tonnes of Guatemalan white sugar, 122,600 from India, 108,000 from Algeria, 39,550 from Brazil, 30,000 from Egypt and 6,000 from El Salvador.
The buyers were BNP Paribas SA (411,750 tonnes) and Sucden Financial (100,000).