Scorching heat exceeding 30°C (86°F) has continued since the weekend.
Today, June 15, the daytime temperature in Seoul climbed to 32.6°C (91°F), marking the hottest day of the year so far.
However, the temperature is forecast to rise to 34°C (93°F) tomorrow, which is expected to break the record for the highest temperature of the year once again.
The scorching heat, primarily concentrated in western regions today, was caused by strong sunlight combined with warm southeasterly winds.
This pattern is expected to continue tomorrow. While areas east of the Taebaek Mountains will remain relatively cool at around 25°C (77°F), temperatures in western regions, including Seoul, will climb to around 33°C (91°F).
Nevertheless, because humidity is still low, the perceived temperature will be lower than the actual temperature.
Due to atmospheric instability, there is also a forecast for showers in the northern part of Gangwon Province and the Honam region tomorrow.
Meanwhile, ozone advisories were issued for the Seoul metropolitan area and the Chungnam region today.
Ozone levels are expected to be high in western regions again tomorrow afternoon. In particular, levels in northern Gyeonggi Province are expected to reach the "very unhealthy" range, so those with respiratory sensitivities should refrain from going outdoors.
Looking at the satellite imagery, clear skies are visible between the clouds today.
Clear skies are also expected between clouds tomorrow, and ultraviolet radiation will be very strong.
Let's take a look at the morning temperatures.
The morning temperature in Seoul will be 21°C (70°F), slightly higher than today.
Daytime temperatures will rise above 30°C (86°F), mainly in western regions.
There is a forecast for showers in inland areas the day after tomorrow, and the heat exceeding 30°C (86°F) is expected to continue for the time being.
(Weather Caster Nam Yu-jin)
※ Please note: This article was translated by AI and may contain errors.
Temperatures to Reach 34°C Tomorrow, Expected to Break This Year's Record Again
Jun 15, 2026
