The Brazilian pair, who delighted their home crowd when they were crowned Olympic champions at Rio 2016, started this season with World Cup victory in Miami.

An eight point lead gave the duo breathing space heading into today’s double point medal race, where they finished second to clinch victory.

"We have nailed the year now with Miami and now Hyères,” said Grael.

"But we have to keep our feet on the ground as we know there will be big competition ahead."

Germany's Victoria Jurczok and Anika Lorenz were 16 points behind the winners in second, while Britain’s Charlotte Dobson and Saskia Tidey earned their first World Cup podium by ending a further 13 behind in third.

The men’s 49er gold medal had already been sealed by Spain's Diego Botin and Iago Lopez yesterday, with the pair enjoying an unassailable overnight lead.

Dylan Fletcher-Scott and Stu Bithell claimed the silver medal by ending third in the medal race, with Sweden's Carl Sylvan and Marcus Anjemark settling for bronze as they ended six points adrift of the British crew.

France’s Louis Giard wrapped up the men’s RS:X victory by finishing with 63 points, with Poland’s Piotr Myszka and the Netherlands’ Kiran Badloe rounding off the podium on 78 and 80 respectively.

The women’s title was earned by Poland's Zofia Noceti-Klepacka, with the windsurfing finishing some way clear of her rivals on a total of 49.

She would win the event by 23 from second placed Yunxiu Lu of China, while there was a further 11 point gap to bronze medallist Noga Geller of Israel.

Spain’s Fernando Echavarri and Tara Pacheco ensured themselves of the Nacra 17 title by winning the medal race.

Their efforts were enough to hold off the challenge of the French pairing of Moana Vaireaux and Manon Audinet, who took the silver medal.

Lin Ea Cenholt and Christian Peter Lubeck of Denmark settled for bronze.

The kiteboarding crown was claimed by France’s Nico Parlier, who won all but one race of this week’s series.

His compatriot Axel Mazella claimed the silver, with Monaco's Maxime Nocher rounding off the top three.

Damien Seguin, who missed the sole 2.4 Norlin OD race contested yesterday due to a mechanical issue, returned to wrap up victory in the Paralympic event.

The Frenchman won all three races today to move to a total of 10 points, with Italy’s Antonio Squizzato ending 17 behind in second.

Xavier Dagault of France rounded off the podium on 30.

Australia's Mat Belcher and Will Ryan won both races today in the men’s 470 class to ensure they will take gold regardless of the result of tomorrow’s medal race.

The Netherlands’ Afrodite Zegers and Annaloes van Veen look poised to win the women’s event having opened up a 19 point lead over Switzerland’s Linda Fahrni and Maja Siegenthaler.

Turkey’s Alican Kayner heads the men’s finn fleet going medal race, with the Netherlands’ Nicholas Heiner 10 behind.

Italy's Francesco Marrai is six points clear of Cyprus’ Pavlos Kontides in the men’s laser, while Belgium’s Evi van Acker heads the laser radial by 12 points from Tuula Tenkanen of Finland.