Meiyu Front

The Meiyu front, also called the plum rain front, is a persistent stationary weather front that produces the East Asian rainy season across China, Taiwan, Korea and Japan in late spring and early summer, forming where moist Pacific air meets cooler continental air. The rainy season it drives typically lasts nearly two months, running from early June to mid-July in Japan and from June to mid-July in Korea, and ends once the subtropical ridge strengthens enough to push the front north of the region. Its high humidity promotes mold and rot on food and fabric, and its heavy rainfall can cause serious flooding and mudslides before warming weather patterns finally shift the front northward.