The last day of winter (by the common “official” astronomical definition) is the day before the spring equinox, which in 2026 is Friday, March 20, 2026 in the Northern Hemisphere.

Quick Scoop

1. Short answer

  • Using astronomical seasons (solstice to equinox), the last day of winter is March 20 in 2026 in the Northern Hemisphere.
  • Using meteorological seasons (full calendar months), the last day of winter is February 28 in 2026.

2. Two main ways people define it

  • Astronomical winter
    • Starts at the December winter solstice.
    • Ends at the March equinox, when spring officially begins, so winter’s last full day is the day before that equinox.
* For 2025–26 in the Northern Hemisphere, that end date is **March 20, 2026**.
  • Meteorological winter
    • Defined by weather statistics: December, January, February.
* For 2025–26, that means winter runs **December 1, 2025 – February 28, 2026** , making **February 28, 2026** its last day.

3. So which one matters?

If you’re asking “when is the last day of winter” for:

  • Calendars, equinox/solstice charts, and ‘official’ season start dates → use the astronomical one: March 20, 2026.
  • Climate statistics, weather reports, or seasonal averages → meteorological: February 28, 2026.

A simple way to remember it:

If you’re thinking about the sky and the Sun , winter ends around March 20. If you’re thinking about weather averages , winter ends on the last day of February.

Information gathered from public forums or data available on the internet and portrayed here.