South Korea Forecasts Early Summer Heat and Dense Morning Fog

South Korea will experience early summer heat and dense morning fog on May 29, coinciding with the start of local-election pre-voting ^[1].

These weather patterns arrive during a critical civic window, potentially impacting travel and visibility for voters heading to polls across the country. The combination of sharp temperature swings and high UV levels requires public health precautions during the transition to summer conditions.

Dense fog has affected the western coast, with visibility dropping to less than 200 meters ^[1]. A YTN weather caster said that while the skies remain clear, the region is seeing a sharp rise in daytime temperatures while nights remain cool.

In Seoul, the morning temperature was recorded at 16.6°C ^[2]. However, the city is expected to reach a daytime high of 28°C ^[1]. Other major cities will see similar trends, with Daegu forecasted to reach 29°C ^[1]. This creates a large diurnal temperature swing that officials have urged the public to monitor.

Beyond the temperature shifts, the forecast warns of very strong UV radiation levels during the day ^[1]. Additionally, ozone concentrations are expected to be high in the southern regions, and Chungcheong ^[1].

While much of the country remains clear, isolated showers are possible in the inland areas of western Gyeongnam ^[1]. These atmospheric conditions are typical for the early summer season, characterized by unstable air masses and fluctuating moisture levels.

Local authorities have not issued specific travel warnings, but the visibility issues on the western coast remain a primary concern for morning commuters ^[1].