Highest temperature in Seoul on June 28?

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Market context

Seoul is currently experiencing a severe heatwave, with daily highs pushing well above typical June averages as a massive high-pressure system dominates the North Pacific. Recent records show temperatures in nearby cities like Daegu and Busan shattering historical June benchmarks, with Daegu hitting 30.7°C and Seoul reaching 35.6°C, the highest since 1958[1][7]. This intense surge of hot, humid air from the southwest has driven 59 out of 97 weather stations across South Korea to record their highest daily average temperatures for June, indicating a climate pattern far more extreme than the norm[1].

Historical data suggests that while June highs in Seoul typically climb from 77°F to 81°F, rarely exceeding 87°F, the current conditions are breaking these long-standing ceilings[2]. The 0% crowd-implied probability for higher temperature ranges appears misplaced given that recent peaks have already surpassed the 35°C threshold, a level not seen in decades, and the all-time national record stands at 41.0°C in Hongcheon[3][7]. Traders should watch for official announcements from the Korea Meteorological Administration regarding the persistence of the high-pressure system, as the current trajectory points toward sustained extreme heat rather than a cooling trend[1].

Key catalysts include the scheduled release of updated hourly data from Wunderground for the Incheon International Airport Station, which will confirm if the peak temperature recorded matches the broader regional surge[3]. With the settlement window ending on 28 June 2026, any delay in data transmission or sudden shifts in wind patterns could alter the final resolution, but the prevailing meteorological evidence strongly supports a continuation of record-breaking temperatures[1]. The absence of significant cloud cover and the gradual decrease in solar energy during June are unlikely to counteract the overwhelming heat from the southwest air surge[2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Football-specific comparison page for Highest temperature in Seoul on June 28?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi (US-focused) or Manifold (play-money).

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