When Does Winter Start In Canada 2024. While winter may officially kick off on december 21, 2023, old man winter plans to make an early appearance, with meteorological winter starting on december 1, so make sure to check your region's december forecast for the early chilly details. The winter solstice falls on saturday, dec.

This winter la niña is expected to develop and hang on through the season. Winter starts at the moment when the sun is farthest south: