Current forecast guidance from agencies like the Korea Meteorological Administration points to a highest temperature in Seoul on June 11 most likely in the low-to-mid 20s Celsius, aligning with early-summer climatology where average daily highs climb from roughly 24–25°C early in the month toward 26°C by mid-June. Differentiating the closely matched 23°C and 24°C outcomes hinges on small uncertainties in cloud cover, daytime mixing, and any weak frontal passages that could suppress peak readings by a degree or two; ensemble spreads in numerical weather prediction models typically reflect this narrow range given the transitional atmospheric pattern before full East Asian monsoon onset. No heatwave alerts or anomalous warming signals have emerged recently to shift the distribution higher.