Will the highest temperature in Seoul be 18°C on April 27?

Analysis

Everyone wants to believe the southerly winds are going to push Seoul into 19°C or 20°C territory tomorrow. Don't buy it. The real story is the cloud cover and afternoon rain rolling in — those are the variables that matter, and they point squarely at 18°C as the cap. We've seen this exact setup before. April 22 produced 18.5°C under similar conditions, and that's not a coincidence — it's a pattern. Clouds don't just block sunshine, they actively suppress the kind of afternoon heat spike that would push the mercury past 18°C. The KMA's initial 21°C call was made before those factors fully crystallised. Now, two of the four models I looked at leaned toward 19°C, arguing the rain might hold off long enough to let temperatures creep up. That's a fair point — weather has a way of surprising you. But betting on the rain being late is betting on optimism over evidence. The market has this split almost evenly between 18°C and 19°C, which tells you this is genuinely close. But close calls go to the side with the stronger physical mechanism — and cloud cover plus precipitation beats "maybe the rain is late." I'd back 18°C here: the atmospheric setup is too suppressive to let the warmth win the day.