From a 15 race series the St. Mary's Carlow school boy took six first places in a fleet of over 300 boats.
The rising star of Irish junior sailing, who is already a world silver medallist in the class, beat Brtiains' Edward Jones by a margin of nine points.
In July, Lynch took control of the Irish Championships in July to count nothing but podium finishes on his way to the national title against a fleet of 66 in Carlingford.
Earlier this year Lynch also cleared up at the ISA Youth Nationals winning seven out of eleven races in Schull.
Topper Results here.