Overall, it will be clear and hot over the weekend, with many areas expected to have daytime highs exceeding 30 degrees Celsius. Additionally, there may be some rain in the northern regions of Gyeonggi and Gangwon, as well as Jeju.
During the weekend, Korea will be located on the edge of a high pressure system situated south of Japan. A hot and humid southwest wind will blow in along the edge of the high pressure, and with strong sunlight, daytime temperatures in the interior are expected to exceed 30 degrees Celsius.
On Saturday, the 7th, morning temperatures ranged from 13 to 23 degrees Celsius. At 8 a.m., the temperatures in major cities were 20.6 degrees in Seoul, 20.8 degrees in Incheon, 18 degrees in Daejeon, 17.9 degrees in Gwangju, 18.6 degrees in Daegu, 19.4 degrees in Ulsan, and 20.7 degrees in Busan.
The highest daytime temperatures are expected to range from 24 to 33 degrees Celsius. The highest daytime temperature in Gyeongbuk's Gimcheon and Gumi is predicted to reach 33 degrees, while it is expected to be 28 degrees in Seoul, 24 degrees in Incheon, 31 degrees in Daejeon and Daegu, 30 degrees in Gwangju, 29 degrees in Ulsan, and 26 degrees in Busan.
On the 8th, morning lows are expected to be between 17 and 21 degrees Celsius, and the highest daytime temperatures will be between 24 and 32 degrees.
As humidity rises, the perceived temperature in the inland areas on the 8th is expected to exceed a maximum of 31 degrees Celsius.
This weekend, the ultraviolet index during midday is expected to reach 'very high' levels in most areas, indicating strong ultraviolet radiation.
As the sunlight is strong, ozone levels will also increase, with concentrations in the metropolitan area, Gangwon, Chungbuk, Chungnam, and Yeongnam expected to reach 'bad' levels on the 7th, and in the metropolitan area, Gangwon Yeongseo, Chungbuk, Chungnam, Daegu, Ulsan, Gyeongbuk, and Gyeongnam on the 8th.
A pressure trough will pass north of Korea, causing approximately 5 mm of rain in northern Gyeonggi and central and northern Gangwon from morning to afternoon on the 7th.
Also, due to the influence of a low pressure system moving from southern China to the waters south of Jeju, rain of less than 5 mm is expected on Jeju from early morning until afternoon on the 8th.
On the 8th, afternoon showers of 5 to 20 mm are expected in the inland and mountainous areas of Gangwon. The atmosphere will become unstable, leading to thunderstorms and lightning accompanying the rain.