The school summer holiday, which is a significant indicator of summer's end for many families in the UK, usually starts in late July and ends in early September, varying slightly depending on the school and region.
However, the defines summer as June, July, and August — so summer ends on August 31 .
The astronomical seasons are defined by the Earth's tilt and its position in orbit around the Sun. In 2026, summer ends at the , which occurs at approximately 04:05 BST on Tuesday, 22 September . At this precise moment, the Sun crosses the celestial equator, and day and night are roughly equal in length everywhere on Earth. Practical Markers of Summer's End in the UK
The school summer holiday, which is a significant indicator of summer's end for many families in the UK, usually starts in late July and ends in early September, varying slightly depending on the school and region.
However, the defines summer as June, July, and August — so summer ends on August 31 .
The astronomical seasons are defined by the Earth's tilt and its position in orbit around the Sun. In 2026, summer ends at the , which occurs at approximately 04:05 BST on Tuesday, 22 September . At this precise moment, the Sun crosses the celestial equator, and day and night are roughly equal in length everywhere on Earth. Practical Markers of Summer's End in the UK
