Highest temperature in Hong Kong on August 9?

Platform comparison

Market context

Hong Kong’s temperature reading for 9 August will be set by the Hong Kong Observatory’s final daily extract, with the market resolving on the **Absolute Daily Max** once that data is published. The current 0% YES crowd price suggests traders are treating an outcome in the relevant range as effectively inaccessible, but the actual settlement will depend on the Observatory’s final one-decimal Celsius figure, not on private forecasts or headlines.[2][5][8]

History suggests August heat in Hong Kong can sit close to the low-30s, but the city is also capable of brief spikes well above that when subsiding air and weak winds dominate. The Observatory’s August normals put the 9 August daily maximum around the low-30s, while recent reporting has shown the city can still reach the mid- to upper-30s during strong heat episodes, including days when the Observatory itself posted 34.7°C and other parts of Hong Kong exceeded 37°C.[4][13][15]

For traders, the main catalyst is the Observatory’s day-of weather pattern: cloud cover, wind, and any tropical-system influence will matter more than longer-range seasonal expectations. The key watchpoints are the morning and midday Observatory updates and whether the heat warning stays in place; recent coverage from local outlets has already pointed to very hot conditions and a high around 34°C, which would keep the market anchored well below the extremes implied by recent heatwave reports.[5][18][3]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Hong Kong on August 9? 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 Trump Prediction 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

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.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

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.