When Does Winter End 2026. Summer begins with the summer solstice, sunday, june 21, 2026, 4:24 a.m. Winter solstice 2026 (beginning of astronomical winter) on the day of the winter (december) solstice, the sun passes through the southernmost point of the ecliptic, that is, as.
How long does autumn last? The first day of winter (winter solstice or december solstice) is when the sun is in its most.