What Day Is The First Day Of Summer 2025. In 2025, the summer solstice in the northern hemisphere will occur on june 20, 2025, at 10:42 pm edt (or 2:42 am utc on june 21). In the northern hemisphere, it always occurs around june 20 or 21.

In 2025, the summer solstice in the northern hemisphere will occur on june 20, 2025, at 10:42 pm edt (or 2:42 am utc on june 21). Find out the date when summer is in 2025 and count down the days until summer with a countdown timer.