Winter Solstice 2025 Uk. When exactly does the 2025 winter solstice occur? It is the astronomical start of winter, although the meteorological winter begins a bit.

The solstice will occur at 9:21am gmt in the uk, and the sun will set at 3:53pm in london. Today, december 21, 2025, marks the winter solstice, also known as the longest night of the year or the shortest day of the year.