Highest temperature in Shanghai on August 6?

Platform comparison

Market context

Shanghai’s airport temperature for 6 August is pricing as a **full underdog** at a **0% implied YES probability**, which leaves the market effectively saying the day will not land in the relevant temperature band. The consensus backdrop is still hot: AccuWeather has Shanghai’s August highs mostly in the upper 80s to low 90s Fahrenheit, while TravelChinaGuide pegs average August highs around 32°C, or about 90°F[1][3]. That matters because the airport station’s maximum is usually driven by the same late-summer subtropical pattern, so the favourite remains the hotter temperature buckets rather than a cool surprise.

Historically, Shanghai in August is a heat-and-humidity regime rather than a coin flip on extremes, and that makes the value question less about whether it gets warm and more about whether cloud, rain or a typhoon flank knocks the day’s peak down a notch. Forecast services for early August show sunny to very warm conditions, with one model calling 6 August around 35°C/26°C and another putting the day near 34°C with a 36°C feel-like reading and only low precipitation chances[2][10][13]. The contrarian angle is that airport readings can underperform city-centre expectations when sea breeze, convection or showers cap the maximum, so the market’s 0% YES looks aggressive if the listed band is not aligned with the broader forecast cluster.

The key catalyst is the actual daytime evolution at Shanghai Pudong Airport: cloud build-up, rain bands and any late-morning sea-breeze cooling can all suppress the high before the settlement window closes at 12:00 UTC, which is 20:00 local time. Traders should also watch for any tropical-system chatter in the East China Sea, because Shanghai’s August weather is seasonal-typhoon sensitive even when the short-range forecast starts hot[12]. With the crowd already near zero, the value question sits on the *over* side if the resolution band is centred on typical August heat, but the contrarian case is a lower ceiling if showers arrive early and hold.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

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On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

UK Frequently Asked Questions

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