Summer Solstice 2025 Uk Time. The summer solstice is the first day of astronomical summer, although the more logical metrological summer begins december 1st / june 1st (depending on hemisphere). Time to go out to.
The summer solstice represents the longest day, and the winter solstice the shortest. In 2025 the summer solstice will occur on saturday 21 june at 03.42 bst (02.42 gmt).
