Summer 2025 Start And End Date

Summer 2025 Start And End Date. The following dates are sorted chronologically, beginning in january of 2025. Summer starts at the moment when the sun is farthest north:

From an astronomical point of view, summer in the northern hemisphere officially begins on thursday, june 20 and ends. This year the summer will start on thursday june 20, 2025 (day of the summer solstice) and will end on sunday september 22, 2025 with the autumnal equinox.