Shortest Day Of 2025. When is the shortest day of the year? In 2025 the summer solstice will occur on saturday 21 june at 03.42 bst (02.42 gmt).
Even though the shortest day of the year is almost two weeks away, many wisconsinites may already be looking ahead to when the days get longer. Winter solstice of 2024 and 2025 falls on december 21st, when the daytime will be the shortest in a year.