Overview
Spring is the transitional season that follows winter and precedes summer in temperate climates. Its arrival is commonly described in two ways: astronomically, by the position of the Earth in orbit and the balance of daylight around the vernal equinox, and meteorologically, by a sequence of monthly temperature averages. The primary physical reason for seasonal change is that the Earth tilts on its axis relative to its orbital plane as it moves around the Sun, so northern and southern hemispheres receive different amounts of sunlight at different times of year.
Typical characteristics and natural effects
With spring come longer daylight hours and generally milder weather. Increased solar heating and changing atmospheric patterns often produce more frequent rain, which supports new growth. Trees and other plants break dormancy, buds open and many species bloom. The rise in floral activity releases pollen into the air; for sensitive people, exposure to plant pollens can trigger allergic reactions because those particles act as allergens. Warmer conditions also stimulate insect activity and can prompt birds and mammals to begin courtship, nesting and migration, making spring an important period for reproduction across ecosystems.
Human health, agriculture and daily life
Many people notice mood improvements as daylight increases; those who experience seasonal affective disorder often find symptoms ease in spring. The season is crucial for farming: soils warm, seeds are sown and certain crops are planted to take advantage of the growing season. Spring includes a variety of human routines such as gardening, seasonal maintenance and the tradition of "spring cleaning." Schools and universities commonly schedule a vacation or break during early spring; academic calendars in some places refer to a "spring term" at universities and schools.
Cultural and religious significance
Across cultures, spring is associated with renewal, fertility and rebirth. Many holidays that celebrate these themes fall in spring, including observances such as Passover and Easter, alongside a wide variety of folk festivals and public celebrations that honor planting, light and life. Traditions range from flower festivals to parades, and symbolic motifs—eggs, young animals and fresh greenery—are common.
Seasonal definitions and regional variation
Definitions of spring vary by climate and culture. In temperate regions, astronomical spring begins at the vernal equinox and ends at the summer solstice, but meteorologists often define spring as three fixed months that roughly capture the warming trend. In the southern hemisphere, the sequence of seasons is reversed. Local weather patterns can make the character of spring quite different around the world, from prolonged rainy periods to rapid, showy flowerings. These regional differences affect timing for planting, festivals and wildlife activity.
Practical notes and notable distinctions
When discussing spring it helps to distinguish between astronomical and meteorological definitions, to recognize ecological responses such as phenology (the timing of natural events), and to account for human concerns like pollen-driven allergies and changing agricultural calendars. For more general information, introductory resources and seasonal guides, see further links and materials provided by regional services and cultural organizations (season overview, weather guidance, planting calendars). Spring remains a central organizing concept in nature and society because it marks a predictable interval when many living systems resume active growth and many human rhythms renew.