[Tomorrow's Weather] Rainfall Won't Break the Heat... Apparent Temperatures Around 33°C in Most Areas

On Tuesday, the 14th, rain is forecast across the country; however, it is not expected to completely break the heatwave. After the rain, humidity is expected to rise sharply, causing the apparent temperature in most regions to soar to around 33 degrees Celsius, while the Gyeongbuk and eastern coastal areas of Gangwon will continue to experience extreme heat with apparent temperatures around 35 degrees Celsius.

On the 13th, in the riverside park of Gijije in Jeonju, Jeollabuk-do, where a heatwave warning was issued, a citizen wearing a sunshade umbrella is walking. Photo by Yonhap News Agency

On the previous day, the 13th, a scorching heatwave gripped various parts of Gyeongbuk, with the daytime high in Sinam-dong, Dong-gu, Daegu reaching 37.7 degrees Celsius and midday temperatures in many areas exceeding 37 degrees Celsius. This heat is not expected to dissipate overnight, and most regions nationwide are likely to experience tropical nights.

On the 14th, due to rain nationwide, actual temperatures may drop somewhat. However, as humidity increases, the apparent temperature will remain around 33 degrees Celsius in most areas and around 35 degrees Celsius in Gyeongbuk and the eastern coast of Gangwon, so the hot weather will persist. Even if the temperature temporarily decreases due to precipitation, the influx of humid air after the rain stops will prevent the heat from subsiding.

The minimum temperatures on the morning of the 14th will range from 23 to 27 degrees Celsius, and the maximum daytime temperatures will range from 28 to 37 degrees Celsius. The expected low and high temperatures in major cities are: Seoul 26/32°C, Incheon 26/30°C, Daejeon 25/32°C, Gwangju and Ulsan 26/31°C, Daegu 26/36°C, Busan 25/29°C, and so on. In particular, daytime highs in areas such as Yeongdeok, Pohang, and Gyeongju in Gyeongbuk are forecast to reach up to 37 degrees Celsius.

Following the ongoing rain in Jeju, low pressure moving northeast from the Shandong Peninsula in China will cause rain clouds to expand gradually. Rain is expected to begin in the Seoul metropolitan area and Chungnam from the morning, in Gangwon, Chungbuk, and Honam in the afternoon, and in Yeongnam at night. This period of rain is mostly expected to subside by the afternoon of Wednesday, the 15th.

The expected rainfall through the 15th is: 30–100 mm in the Seoul metropolitan area and the five West Sea islands (with some areas in northern Gyeonggi exceeding 120 mm); 30–80 mm in the inland and mountainous areas of Gangwon, Chungcheong, and Jeonbuk (with some areas in northern inland Gangwon exceeding 100 mm); 20–60 mm in Gwangju, Jeonnam, and Jeju; and 5–40 mm in the eastern coast of Gangwon, Daegu and Gyeongbuk, Busan, Ulsan, Gyeongnam, Ulleungdo, and Dokdo.

Due to the influence of low pressure passing to the north, on the night of the 14th, northern Gyeonggi and inland northern Gangwon will see heavy rainfall of 30–50 mm per hour. Elsewhere in the Seoul metropolitan area, mountainous and inland areas of Gangwon, and northern Chungcheong, rainfall of 20–30 mm per hour is expected in some locations, while around dawn on the 15th, heavy downpours of about 20–30 mm per hour are forecast, centered on Jeonbuk.

Winds will also intensify along with the rain. On the 14th, most regions nationwide are expected to see strong gusts with instantaneous wind speeds of around 55 km/h (15 m/s). In particular, the Seoul metropolitan area, inland and mountainous areas of Gangwon, Chungnam, coastal regions of Jeolla, mountainous and eastern coastal areas of northern Gyeongbuk, coastal Gyeongnam, and Jeju are likely to experience even stronger gusts with instantaneous wind speeds exceeding 70 km/h (and 90 km/h in mountainous areas), possibly prompting strong wind advisories.

Strong waves are also expected at sea. Thunderstorms and gusty winds are forecast for the West and East Seas, and very high waves of 2 to 4 meters, accompanied by strong winds of 35–75 km/h (9–21 m/s), are expected in the far offshore areas of the West Sea, the west of the southern coast, the outer eastern parts of the southern coast, and Jeju waters (excluding the northern nearshore). In particular, the central far offshore of the West Sea is expected to see waves exceeding 5 meters on the 14th.

In addition, swells will continue to hit the coasts of Jeju, Jeonnam, and Gyeongnam. As high waves can quickly sweep over rocks and breakwaters, people are advised to refrain from accessing coastal areas to prevent accidents.

This content was produced with the assistance of AI translation services.