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

Spring has arrived early in South Korea this year, bringing flowers into bloom well ahead of schedule. Warmer temperatures have shifted the usual blooming times, with some species appearing weeks sooner than normal. Scientists link these changes to rising spring temperatures caused by climate change.

Plum blossoms opened unusually early at the Seogwipo observatory on January 17, 2025. This was 27 days earlier than last year and 30 days ahead of the long-term average. Another early bloomer, Adonis amurensis, appeared on February 5, 13 days sooner than its typical date of February 18.

Cherry blossoms followed the trend, flowering on April 4, 2024—eight days earlier than usual. The Yeouido Cherry Blossom Festival will now run from April 8 to April 12 to match the adjusted schedule. Official bloom dates in Seoul are confirmed when at least three flowers open on a designated branch at the Seoul Weather Station in Jongno.

Other species are also blooming ahead of time. Forsythia are expected between March 14 and March 30, about 3.9 days earlier than normal. Azaleas should appear between March 18 and March 28, roughly 4.5 days sooner. Warmer springs are driving these shifts, with March 2024 averaging 6.9°C (0.8°C above normal) and March 2023 reaching 7.6°C (1.5°C above normal). Research shows that every 1°C rise in spring temperature moves blooming dates forward by an average of 4.1 days.

While data on long-term cherry blossom trends in South Korea remains limited, the recent pattern points to a clear shift in seasonal timing.

The early arrival of spring flowers reflects broader changes in South Korea's climate. With blooming dates shifting forward by days or even weeks, festivals and agricultural planning may need to adapt. Scientists continue to monitor how rising temperatures will affect future seasons.