Highest temperature in Seoul (Incheon) on August 3?

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Market context

Seoul and the surrounding capital area have just shifted into a more intense heat pattern, with easterly winds expected to push temperatures higher west of the mountains and a heatwave warning already in force across Seoul. Forecasts for today cluster around the mid-to-high 30s Celsius for the capital, with one local forecast putting Seoul at about 37°C, while Incheon is forecast nearer 32°C; that gap matters because the market settles on the highest reading at Incheon Intl Airport Station, not Seoul proper.[1][3][8]

For a 0% crowd-implied probability to be wrong, the airport would need to beat the sort of daytime peak currently expected by a wide margin. In August, Seoul’s average high is around 84°F/29°C, but the region often moves well above that in heatwave periods, and today’s national forecast still points to widespread 32–39°C highs, so this is more a question of whether Incheon can catch an inland-style surge than whether it will be warm.[2][17][19]

Traders should watch the next few forecast updates from the Korea Meteorological Administration and any changes in wind direction, cloud cover, or afternoon showers, because those are the main near-term variables that can cap or amplify the high. The latest reporting also mentions clear skies for much of the country and isolated showers elsewhere, which would support stronger heating if they miss the airport area, while showers and gusts would make a lower terminal maximum more likely.[1][3][8]

Sources: 1 · 2 · 3 · 4 · 5

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