When Will Spring Start 2025. Spring will arrive on thursday, march 20, 2025, and last until june 21, 2024. For those of us in the northern hemisphere, this is marked by the arrival of the spring equinox (otherwise known as the “first point of aries”).

Astronomical spring will arrive march 20, which is the spring — also known as the vernal — equinox. What is the spring equinox and what happens on this day?.