Summer Solstice 2025 Uk 2025. The solstice officially marks the beginning of the astronomical. In 2025, summer solstice in the northern hemisphere will occur on thursday, june 20 around 4:50 p.m.

It is the longest day of the year that marks the arrival of the summer season. The summer solstice will take place on thursday 20th june at 9.51pm (bst) in the uk.