Official Day Of Spring 2025. Spring 2025 starts on thursday, march 20th in the northern hemisphere, with daylight time lengthening and the leaves begining show on the trees with the changing tilt of the earth's axis. The first day of spring in 2025 marks the official arrival of warmer weather, longer days, and the vibrant renewal of nature.

The transition from winter to spring always takes place in march. Summer begins with the summer solstice, friday, june 20, 2025, 10:42 p.m.