First Day Of Summer 2025 Uk Date. In 2025 the summer solstice will occur on thursday 20 june at 21.51 bst (20.51 gmt). It's time for the start of summer โ with a full moon to boot.
The summer solstice occurs in june in the northern. Summer 2025 starts on thursday, june 20th in the northern hemisphere, with the first day of summer being the longest daylight day of the year with the earth’s.