Summer Solstice 2025 Europe. What exactly is the summer solstice? The summer solstice is the first day of astronomical summer, although the more logical metrological summer begins december 1st / june 1st (depending on hemisphere).
In 2025, the solstice moment will fall at 2:42 utc on june 21 (9:42 p.m. This is the first day of astronomical summer and occurs as.