When Does Summer Start 2026. This year the summer will start on thursday june 20, 2024 (day of the summer solstice) and will end on sunday september 22, 2024 with the autumnal equinox. View below the dates for (among others) daylight saving (start) 2025 and daylight saving (start) 2026.
When in 2026 is summer? Begins on friday, december 1, and will end on wednesday, february 29, 2024.