Summer Solstice 2025 Europe Time. The map above shows what time the sunsets across europe on the longest day of the year aka the summer solstice (21st of june) based on local time. This refers to the northern hemisphere of the earth.

The summer solstice signals the beginning of astronomical summer and the winter solstice signals the beginning of winter. The exact moment of the solstice is at 3.42 am bst, which is the point at which the northern hemisphere is tilted farthest towards the sun.