South Korea's cherry blossoms bloom weeks early as spring arrives sooner

Spring flowers are arriving earlier than usual this year across South Korea. Warmer temperatures have shifted blooming times for several species, including cherry blossoms, azaleas and forsythia. The changes come as climate patterns continue to alter seasonal schedules.

The first signs of an early spring appeared in January. Plum blossoms opened on the 17th at the Seogwipo observatory—27 days ahead of last year and 30 days earlier than average. By February 5, Adonis amurensis bloomed in Hongneung Arboretum, 13 days sooner than expected.

March temperatures reinforced the trend. The month averaged 6.9°C, 0.8 degrees above normal. Ten of the last year's twelve months also recorded above-average warmth. These conditions pushed forsythia blooms to March 14–30, about 3.9 days early, while azaleas are now expected from March 18–28, roughly 4.5 days ahead of schedule.

Cherry blossoms have followed the pattern. Last year they peaked on April 4, four days early. In 2024, they reached full bloom on March 31—eight days sooner than usual. The Yeouido Cherry Blossom Festival will run from April 8–12 this year, aligning with the shifted schedule.

Research links the changes to rising spring temperatures. A 1°C increase typically moves blooming dates forward by 4.1 days on average.

The earlier blooms reflect broader shifts in seasonal timing. With festivals like Yeouido's adjusting to the new calendar, planners and visitors must account for accelerated flowering periods. Scientists continue to track how sustained warming may further alter these natural cycles.