What to wear sailing?

Clothing is dictated by the weather. In the heat of the summer, shorts, T-shirts, non-marking/non-slip shoes, a cap, and sunscreen is the norm. In the early and late part of the season when the weather can be a bit cooler, wet/dry suits and windbreakers will keep you warm. A raincoat can be worn as sailing is typically a wet sport. Sailing gloves are also very helpful. If you are sailing Albacores, come prepared to get wet which means you may want to bring a change of clothes.
The Club supplies a personal flotation devices (PFD), approved by Transport Canada, which must be worn at all times on the water when sailing in club dinghies and upon skippers request on large boats.

Hamilton Weather from Environment Canada
Lake Ontario Water Temperature
Cold Water Survival Chart