However the weather is set to improve throughout the day and sailors can expect a south westerly breeze in between 14-16 knots with gusts between 19-22 knots.
Today sees the start of the Men's and Women's RS:X Competition. Julien Bontemps (FRA), Dorian Van Rijsselberge (NED) and Nick Dempsey (GBR) are expected to be the frontrunners in the Men's whilst Lee Korzits (ISR), Zofia Klepacka (POL) and Marina Alabau (ESP) will all challenge for the Women's medals. They begin their gold pursuit on Weymouth Bay West at 12:00 local time.
The leaderboard in the Star and Finn will take great shape today as they sail their fifth and sixth races before a reserve day tomorrow. Iain Percy and Andrew Simpson (GBR) moved into the Star lead yesterday whilst Jonas Hogh Christensen (DEN) extended his Finn lead. They commence at 12:00 local time on Weymouth Bay South.
The 49ers will be the first fleet to take to Portland Harbour and after a fantastic race day yesterday Allan Norregaard and Peter Lang (DEN) will hope to end their second day of racing still in the lead.
Annalise Murphy (IRL) sailed magnificently in the Radial to notch up double bullets, the Irish girl will join the rest of the fleet on the Nothe Course at 12:00 for their third race before their second on Portland Harbour at 14:10.
Tom Slingsby (AUS) stormed to the Laser radial with a second in Race 1 and a win in Race 2. He will want to extend his eight point lead today.
Women's Match Racing commences at 13:30 on the Nothe Course with Ekaterina Skudina (RUS) and Olivia Price (AUS) the only undefeated crews after four races.
Follow all the action on the ISAF Olympic Live Blog which will bring competition updates and instant reactions to the action on the race course. Fans can check in and ask our media team questions to get the very latest information. The blog will start one hour before racing each and every day of the competition.