Astronomically, spring in the Northern Hemisphere starts with the vernal equinox, when day and night are nearly equal. This event falls on March 19, 20, or 21. Therefore, the astronomical spring months are . In the Southern Hemisphere, these same months bring autumn, while spring there runs from September, October, and November .
In summary, the most common answer for the Northern Hemisphere is . Yet the exact month spring starts depends on whether you are measuring by the Sun’s position, weather data, or nature’s own clock. Understanding these differences helps us appreciate how humans organize time in relation to the natural world. what month is spring season
Many cultures also define spring by local traditions or ecological signs. In parts of Asia, spring is linked to lunar calendars, meaning the months shift annually. In farming communities, spring may begin when the last frost passes or when specific flowers bloom—sometimes as early as February or as late as April. In the Southern Hemisphere, these same months bring