When Does Spring Start 2024 Uk. The clocks change on the last sunday of march every year in the uk, moving forward by one hour. The seasons are defined as spring (march, april, may), summer (june, july, august), autumn (september, october, november) and winter (december, january,.

The first day of spring in the uk astronomically occurs on the vernal equinox, 20 march 2025. By the meteorological calendar, spring will always start on 1 march;