What Is Spring Months

This definition provides a fixed and consistent timeframe for data collection, allowing meteorologists to calculate seasonal averages (e.g., "The average spring temperature") without the variability of the astronomical calendar.

(e.g., Australia, Brazil, South Africa)

are the official spring months. September 1 marks the start of the meteorological spring. 💡 Key Takeaway what is spring months

Unlike the meteorological definition, astronomical spring dates vary slightly from year to year. This variation occurs because the Earth’s orbit around the sun is not a perfect circle but an ellipse, and the tropical year (the time it takes for the Earth to return to the same position relative to the seasons) is approximately 365.24 days. Consequently, leap years and orbital wobble shift the equinox dates slightly. This definition provides a fixed and consistent timeframe