This vineyard is located in the Niagara Lakeshore sub-appellation, one of the four sub-appellations in Niagara-on-the-Lake. (NOTL is one of four distinct wine growing regions in Ontario, and its sub-appellations are areas that have a distinct climate and soil composition different from other areas in the region).
Lake Ontario dominates our weather patterns here, so much so that there can be some form of heavy precipitation here and absolutely nothing 3kms away. Lake Ontario is the smallest of the Great Lakes but is the third deepest. This means that it retains warmth in the winter and cool in the summer acting as the furnace/AC that moderates our temperatures (In the winter it can be 3 degrees warmer here than in Toronto).
The Niagara Escarpment traps the cool/warm air and redirects back across the region continuously cycling that air. The Escarpment used to actually be the shoreline of Lake Iroquois during the last ice age, and the Niagara Lakeshore was over 200 feet under ice and water at the Lake bottom. The Ice Age receded around 10,000 years ago and with it went Lake Iroquois, gradually scraping out the lakebed until it reached its current shoreline. This event is why the wineries over in Beamsville, Vineland and Jordan on the Escarpment have such a different taste profile than the wines in NOTL. Their soil is a mix of Limestone and clay whereas we on the ancient lake bottom have a sand and clay mix soil. Ours is good for drainage and for producing typically fruit forward and aromatic wines. (The rock on the Bench gives their wines a minerality and crispness that is now typically associated with their terroir.)