Summer Solstice Date 2025. The northern hemisphere experiences a summer solstice when the sun is directly overhead at its farthest north point in the sky. In 2025 the summer solstice will occur on saturday 21 june at 03.42 bst (02.42 gmt).

It marks the start of summer in. The summer solstice date varies due to earth’s elliptical orbit, axial tilt, and the discrepancy between the calendar year and the time for a complete orbit.