Highest temperature in Shenzhen on August 18?

Platform comparison

Market context

Shenzhen will experience peak summer heat on 18 August 2026, with the highest temperature recorded at Bao'an International Airport Station determining the settlement range. The market currently shows zero probability assigned to any outcome, suggesting either incomplete pricing or uncertainty about which temperature bracket will materialise during the South China summer monsoon season.

Historical August temperatures at Shenzhen Bao'an typically peak between 32–35°C, with extreme readings occasionally exceeding 36°C during particularly intense heat waves. Weather Underground's Daily Observations table—the specified resolution source—often records marginally higher readings than the Day High & Low summary section due to measurement timing and station calibration differences. August 2025 saw maximum temperatures in the 33–34°C range across most days, providing a baseline for comparable conditions. The 0% crowd probability suggests traders may be awaiting clarity on the specific temperature brackets offered or awaiting updated seasonal forecasts.

Traders should monitor China Meteorological Administration forecasts released in early August 2026, which typically provide 10-day outlooks for Guangdong Province. Tropical cyclone activity in the Western Pacific during mid-August could materially affect Shenzhen's temperature trajectory, either suppressing highs through cloud cover or intensifying heat through atmospheric dynamics. The settlement window closes at 12:00 UTC on 18 August, creating a fixed deadline for resolution based on Weather Underground's recorded data from Bao'an station. Real-time temperature monitoring from 15 August onwards will provide traders with increasingly precise information for positioning.

Methodology

This page tracks Highest temperature in Shenzhen on August 18? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

UK Frequently Asked Questions

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

Are UK election prediction markets available from the UK?

Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.