Summer Solstice 2025. This happens around june 21 each year. Summer begins with the solstice on thursday, june 20, 2024, marking the astronomical first day of summer in the northern hemisphere.
* the dates of summer given on this page are for the northern hemisphere. Summer solstice 2025 (beginning of astronomical summer) on the day of the summer (june) solstice, the solar disk, moving along the ecliptic, will fall into its northernmost point and will be located at the maximum distance north of the celestial equator.