Highest temperature in Shenzhen on August 14?

Platform comparison

Market context

On 14 August 2026, the highest temperature recorded at Shenzhen Bao'an International Airport Station will fall within one of several defined ranges, measured in degrees Celsius. The market currently prices all outcomes at 0% YES across the board, reflecting either a technical settlement issue or extreme uncertainty about which temperature bracket will ultimately contain that day's peak reading. Resolution hinges on Weather Underground's Daily Observations table rather than the Day High & Low summary, a distinction that matters when automated systems report slightly different figures.

Shenzhen's August temperatures are remarkably consistent year-on-year. Historical data from the past decade shows daily highs clustering between 31–34°C during mid-August, with occasional spikes to 35°C or above during heat waves. The city's subtropical monsoon climate produces little variance in this window; traders assessing probability distributions should weight recent August patterns heavily. Extreme outliers—temperatures below 28°C or exceeding 37°C—occur rarely enough that they command outsized odds if the market eventually prices them.

The settlement mechanism depends entirely on Wunderground's automated station readings, which update throughout the day. Traders should monitor tropical storm activity across the South China Sea in early August 2026, as any system tracking toward Guangdong Province could suppress temperatures significantly. Additionally, the specific timing of the airport station's daily maximum reading—typically recorded between 14:00 and 16:00 local time—means afternoon cloud cover or unexpected wind patterns could shift outcomes. The 12:00 UTC settlement window on 14 August gives traders roughly twelve hours after the actual high is recorded to adjust positions before conditional tokens resolve on-chain.

Methodology

We track Highest temperature in Shenzhen on August 14? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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.

UK Frequently Asked Questions

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 PolyGram. 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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.