Brazil's coffee belt will avoid frost through July 21 as a couple of cold fronts pass to the south of the productive region this week, private forecaster Somar said on Monday.
Somar said in a daily coffee weather bulletin that the South American Jet Stream had shifted temporarily to allow the course of polar-chilled blasts passing over South America to come within range of Brazil until July 11.
"However, these polar air masses will only head for the south of the country, without reaching the productive coffee belt," Somar said.
The first cold front will pass out to sea early this week without causing rain or a drop in temperatures over the coffee belt, which will allow harvesting to gain momentum after being delayed in previous months by rain.
Most coffee areas have had above average rainfall in June. South Minas has had between 86 percent and 120 percent more than usual and the Alegre arabica area in southern Espirito Santo 72 percent extra. May was also wet.
Weather over Brazil's south enters what is traditionally its dry period from May to September. Brazil's winter began officially on June 21. The risk of frost over the coffee belt is highest during June and July.
A second cold front will reach southern Brazil toward the end of this week and bring rainy conditions on Friday and Saturday but not for the main coffee regions, Somar said.
"Again, the polar air mass will restrict itself to the extreme south of the country, reaching only Rio Grande do Sul and Santa Catarina (where there is no coffee)," Somar said.
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