South Korea is experiencing a nationwide return of early-summer heat and strong-wind advisories across the Gangwon east coast and mountainous regions [1, 2].
The sudden shift in weather coincides with the summer solstice, the longest day of the year. This timing brings a sharp increase in temperatures and volatile wind conditions that could impact travel and outdoor safety in the eastern provinces.
YTN News weather caster Yudahyun said that while rain previously kept temperatures cool, the heat has returned quickly [1, 2]. In Seoul, the morning temperature started at 19°C [1]. The daytime high in the capital is predicted to reach 29°C [1], which is five degrees higher than the previous day [1].
This spike follows a cooler period where Seoul's daytime temperature reached 22.4°C [1]. The warming trend extends beyond the capital, with Gwangju expected to hit a daytime high of 30°C [1].
While the heat dominates the south and west, the Gangwon region remains under a strong-wind advisory [1, 2]. These alerts cover both the east coast and the high-altitude mountain areas, where wind speeds are expected to remain elevated.
Yudahyun said, "Today Seoul daytime temperature will rise to 29 degrees, which is 5 degrees higher than yesterday" [1].
“South Korea is experiencing a nationwide return of early-summer heat.”
The convergence of the summer solstice with these temperature spikes indicates a rapid transition into the peak summer season. The simultaneous occurrence of high heat in urban centers like Seoul and Gwangju and strong-wind alerts in Gangwon suggests a volatile atmospheric pressure gradient across the peninsula.



