October's unexpected summer heat in the southern region of South Korea, reaching around 30 degrees, is raising concerns among winter vegetable farmers. This late-season heat, which is setting record highs for October, could lead to overgrowth, increased production, lower crop values, and higher harvest prices. The warmth could also spread bacteria and increase the risk of diseases such as rot. The Korea Meteorological Administration explains the heat as the sun warming the air on mostly sunny days with warm winds from the high pressure edge. Farmers who have started sowing winter vegetables are particularly affected.