The summer solstice takes place in the UK on Sunday 21 June 2026 at 9.24am BST.
It marks the moment when the Northern Hemisphere is tilted most directly towards the Sun, giving us the longest day and shortest night of the year.
The solstice does not mark the end of summer. In fact, some of the warmest weather can arrive later because the land, atmosphere and oceans take time to respond to the Sun’s energy.
It does, however, mark a turning point in the astronomical year.
Why the days begin to get shorter
After the solstice, the length of daylight begins to decrease.
At first, the difference is very small and may be difficult to notice. As the weeks pass, sunsets gradually become earlier and darkness begins to return.
For astronomers, this is welcome news.
The very short nights around midsummer make faint stars, galaxies and nebulae difficult to observe. Longer nights provide more time for our eyes to adapt to darkness and for fainter objects to become visible.
Notice the changing sky
You do not need any equipment to follow the seasonal change.
Try watching:
- where the Sun sets along the horizon
- how the sunset time changes each week
- when the first bright stars become visible
- how quickly darkness arrives after sunset
The movement is gradual, but the sky is changing every day.