Highest temperature in Shenzhen on August 21?

Platform comparison

Market context

Shenzhen's August weather is characterised by peak summer heat and high humidity, with daily maxima typically ranging between 32–35°C during mid-August. The city sits in a subtropical climate zone where afternoon temperatures are driven by intense solar radiation and maritime influences from the South China Sea. The settlement window closes at midday UTC on 21 August 2026, meaning the resolution will capture the highest temperature recorded at Bao'an International Airport Station during that calendar day, with Weather Underground's Daily Observations table serving as the definitive source rather than summary figures.

Historical records from the past decade show Shenzhen rarely exceeds 36°C in late August, as the monsoon season typically moderates peak temperatures compared to July peaks. The 0% crowd probability suggests traders are pricing in an expectation that temperatures will fall within the lower range options available in this market structure. However, anomalous heat events do occur; the city experienced sustained temperatures above 37°C during isolated periods in August 2013 and 2015, though these remain statistical outliers rather than the norm for this specific date window.

Traders should monitor tropical weather systems and typhoon activity in the western Pacific during early-to-mid August 2026, as these can either suppress temperatures through cloud cover and precipitation or, conversely, create stagnant high-pressure systems that elevate maxima. Real-time meteorological forecasts from the China Meteorological Administration typically become reliable 10–14 days ahead of the target date. The resolution methodology's reliance on airport station data rather than urban readings may produce slightly different figures from widely-reported city temperatures, a technical distinction worth noting for settlement purposes.

Methodology

Football-specific comparison page for Highest temperature in Shenzhen on August 21?. 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).

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

UK Frequently Asked Questions

Are prediction markets better than sports betting?

Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

What are live sports odds on Polymarket?

Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.

Which sports markets are available?

Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.

Can I trade Premier League prediction markets from the UK?

Yes. Polymarket has Premier League outcome markets (title winner, relegation, top scorer). For UK traders wanting GBP settlement and UKGC protection, Betfair Exchange and Smarkets offer Premier League futures and match markets. Betfair is the deepest liquidity venue for UK football exchange markets.