When Does Summer Start In Canada May 2026

Canada, as a northern country with diverse climatic zones, does not have a single universal calendar date for the "start" of summer. Depending on the context—whether for astronomy, weather forecasting, or cultural tradition—the beginning of summer falls on one of two distinct dates. This paper outlines both the astronomical and meteorological definitions of summer as they apply to Canada.

Defining the Onset of Summer in Canada: Astronomical vs. Meteorological Perspectives when does summer start in canada

General Audience / Educational Use

April 14, 2026