The average temperature last month was the third highest on record since the weather observation network was expanded nationwide in 1973.
According to the April climate characteristics that the Korea Meteorological Administration released on the 4th, last month's national average temperature was 13.8 degrees. This made it the third-hottest April on record after 2024 (14.9 degrees) and 1998 (14.7 degrees).
In particular, the national average temperature in the middle of the month (11th–20th) was 15.4 degrees, the second highest on record after 2024 (15.8 degrees). On the 19th, Seoul rose to 29.4 degrees, breaking the record for the highest daytime temperature in mid-April.
The Korea Meteorological Administration said the abnormal warmth occurred "because anticyclonic circulation in the upper levels near Korea developed strongly." When high pressure develops, temperatures tend to rise. In the latter part of the month (21st–30th), as the anticyclonic circulation retreated eastward, the average temperature fell to 14.5 degrees. That is around the normal level (13.9 degrees).
April's national precipitation was 79.7 mm. That is similar to the normal level (89.7 mm). The number of days with precipitation was also 7.9, similar to the normal (8.4 days). However, precipitation characteristics differed by period. April precipitation was concentrated mainly in the early part of the month (1st–10th). The number of rainy days in early April was 5.1, meaning rain fell about every other day. In particular, with heavy rain on the 4th and 9th, 87.6% of the month's total precipitation fell in the early part of the month. From mid-month, clear weather continued. Precipitation in the latter part of the month was 1.4 mm, the second lowest on record after 2020 (0.4 mm).
Korea Meteorological Administration Administrator Lee Mi-seon said, "April saw frequent precipitation in the early part of the month, abnormal warmth in the middle, and a dry tendency in the latter part, with large weather swings within a single month," adding, "We will strengthen monitoring and preemptive responses to extreme climate phenomena."