Highest temperature in Guangzhou on July 25?

Platform comparison

Market context

Guangzhou will experience peak summer heat on 25 July 2026, with the settlement hinging on the single highest temperature recorded at Baiyun International Airport throughout that calendar day. The Weather Underground historical database serves as the authoritative source, requiring traders to verify both the station identifier (ZGGG) and the Celsius/Fahrenheit toggle setting before locking positions. Settlement occurs at 12:00 UTC, giving a fixed window to capture the day's maximum reading.

Guangzhou's July temperatures have historically clustered between 32–37°C at the airport station, with occasional excursions toward 38–39°C during intense heat waves. The 0% crowd probability suggests either extreme confidence in a specific temperature band or insufficient liquidity across the full range. Comparable July days from 2015–2024 show that 35–36°C represents the modal outcome, whilst readings above 38°C occur roughly once per decade. Traders building algorithmic feeds should weight recent monsoon patterns and urban heat island effects at the airport location, which sits within Guangzhou's built-up zone.

The primary catalyst remains the East Asian summer monsoon phase in late July 2026. Tropical cyclone activity in the South China Sea during early-to-mid July could suppress temperatures through cloud cover and rainfall, whilst a high-pressure system anchored over central China would drive sustained heat. Programmatic monitoring of China Meteorological Administration forecasts and satellite-derived outgoing longwave radiation data offers early signal; however, the 18-month lead time means current seasonal models carry substantial uncertainty. Traders should establish conditional orders keyed to July 2026 forecast updates rather than attempting to price from present-day climatology alone.

Methodology

This page reviews Highest temperature in Guangzhou on July 25? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Bot UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Bot UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Bot UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.