Summer Solstice 2025 Date Uk. The northern hemisphere will mark the summer solstice on 21 june, the ‘longest day of the year’, when there will be around 16.5 hours of daylight. Summer solstice marks the longest day and shortest night of the year in the northern hemisphere.
The summer solstice brings the beginning of cancer season in the northern hemisphere. The four seasons of the year in the united kingdom —spring, summer, autumn, and winter—are what determine the weather, the ecosystem, and the hours of daylight throughout the year.