2017 was characterized by a cold, dry winter followed by an exceptionally hot and dry spring and summer. June was the hottest month since 1980, with temperatures reaching 104-111°F in the Douro Valley during a heat wave lasting from June 7 – 24. Due to these extreme weather conditions, all phases of the vine’s growth were 15 – 20 days early compared to 2016. The vines weathered the shortage of water and the high temperatures well. Harvest started much earlier than usual due to the weather: from August 17 for the white wines and August 21 for the reds and the Ports, lasting until September 28, with high temperatures and a total absence of rain.
