Weekly forecast: Rain in the south early and over the weekend; cooler midweek

Busan and Jeju: Heavy rain early in the week and over the weekend

Rain or storms are forecast for Busan and Jeju on October 19 (Monday) and 20 (Tuesday), with a 70–80% chance of rain. On October 21 (Wednesday), occasional rain is forecast as the chance falls to the 50–60% range. The chance drops to the 10% range on October 22 (Thursday) and 23 (Friday), when clear skies are forecast, although occasional rain is also in the forecast for Jeju on Friday. On October 24 (Saturday), Busan is forecast to be cloudy before rain, while rain in Jeju strengthens again, with an 80% chance. On October 25 (Sunday), rain is forecast for both Busan and Jeju with a 90% chance, and the strongest rain of the week is expected.

Seoul and Gangneung: Cooler midweek, rain on Sunday

Seoul and Gangneung are forecast to have clear or briefly cloudy skies on October 19 (Monday) and 20 (Tuesday), with rain chances in the 20–30% range. On October 21 (Wednesday), Seoul's rain chance rises to 50%, while Gangneung is forecast to have clear skies with a 10% chance. Clear weather with a 10% chance of rain is forecast for both areas on October 22 (Thursday); both have a 10% chance on Friday as well. On October 25 (Sunday), rain is forecast for both Seoul and Gangneung, with an 80% chance.

Morning lows at major locations lowest midweek

Morning low temperatures are forecast to be lowest midweek, then rise again over the weekend. Seoul's temperature falls from 11°C on October 19 (Monday) to 4°C on October 22 (Thursday), then rises to 14°C on October 25 (Sunday). Gangneung's temperature drops from 15°C on October 19 to 3°C on October 22, then returns to 15°C on October 25. Busan's temperature falls from 17°C on October 19 to 8°C on October 22, then rises to 18°C on October 25. Jeju's temperature drops from 19°C on October 19 to 14°C on October 22, then climbs to 21°C on October 25. Its daytime high also reaches 28°C, the highest level of the week.