The four seasons of South KoreaSpring in South Korea (from March to May) is usually cool, with temperatures slowly getting warmer. This time of year also brings unexpected cold snaps, with temperatures shifting from one extreme to the other. Spring is also the season when yellow dust storms (Hwangsa in Korean) originating from the Gobi Desert and China blow into the Korean peninsula. Extreme cases of yellow dust can cause respiratory problems and have even led to the temporary closing of schools in the past.
Summer (from June to August) is warm, humid, and rainy. About 60 percent of precipitation falls in summer, mainly during the rainy season of the East Asian monsoon (Changma in Korean) which lasts from late June to late July. Heatwaves with maximum temperatures exceeding 33 degrees Celsius usually occur after the rainy season in the second half of the summer. After the hot summer period, the autumn season from September to November offers clear and mild weather with beautiful foliage.
The Siberian high-pressure system influences the Korean winter (from December to March), the coldest and driest season with an average temperature of about 1.2 degrees Celsius. January is usually the snowiest month, followed by December and February. From 1973 to 2020, the average number of snow days in January amounted to about seven.