Argentine wheat is planted in June and July and harvested in December and January. Some 60.9pc of this season's wheat crop has been sown so far, the exchange said in its weekly crop report.
Argentina's agricultural secretariat last week raised its 2019-20 wheat sowing forecast to 6.5 million hectares from its previous 6.46 million hectare estimate, also citing good crop weather.
Heavy rain in eastern Argentina this month has caused some delays in wheat sowing. But crop weather experts say the storms should end up helping farmers grow more of the grain this season as water reserves become replenished.
The Rosario grains exchange has said that Argentina could harvest a record 22 million tonnes of the cereal this season, up from 19.5 million tonnes in the 2018-19 crop year.