On the 4th, the second day of the Chuseok holiday, Jeju Island is expected to see strong winds and high waves through the early morning. With damage reported the previous day in Jeju, including street trees and manhole covers being blown over by strong winds, extra caution is advised to prevent safety accidents.
According to the Korea meteorological Administration, very strong winds with instantaneous speeds of 70 km/h or more are expected to blow in parts of the South Jeolla coast and Jeju Island, where a high wind advisory is in effect.
In the outer central West Sea, the southern West Sea, the South Sea, and the waters off Jeju Island, where a high seas advisory is in effect, winds will blow strongly at 30–60 km/h, with waves running 1.0–3.5 meters high. The inner central West Sea far offshore is also forecast to see winds of 25–45 km/h and wave heights of 1.0–2.5 meters.
On this day, as with the previous day, there is a chance of rain in places nationwide, but most areas are expected to be in a lull. However, in some areas including Seoul, Incheon, northern Gyeonggi, and the mid-to-northern inland Gangwon region, raindrops of less than 0.1 mm could fall through the morning.
Morning lows are forecast at 18–22 degrees, with daytime highs at 23–29 degrees. Temperatures by major area are as follows.
Morning lows: ▲Seoul 19 degrees ▲Incheon 20 degrees ▲Suwon 19 degrees ▲Chuncheon 18 degrees ▲Gangneung 19 degrees ▲Cheongju 20 degrees ▲Daejeon 20 degrees ▲Jeonju 20 degrees ▲Gwangju 20 degrees ▲Daegu 20 degrees ▲Busan 22 degrees ▲Jeju 24 degrees.
Daytime highs are forecast as follows: ▲Seoul·Incheon·Suwon·Chuncheon 26 degrees ▲Gangneung 24 degrees ▲Cheongju·Jeonju·Gwangju 27 degrees ▲Daejeon 26 degrees ▲Daegu·Busan·Jeju 28 degrees.
Fine dust levels are expected to remain at a "good" level across all regions nationwide.