Gwendolyn G North

Longest Day Of The Year 2025 Australia 2025. This year the summer solstice is the 21st of december 2025. Valid on december 17, 2025.

Australia’s summer solstice falls on 21 december at the same time the northern hemisphere has its winter solstice. As weatherzone explains, the orientation of earth relative to the sun makes the date of the summer solstice the longest day of the year in australia.