Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
99% | 1% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 26°C | 99% |
| 25°C | 1% |
| 21°C or below | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C or higher | 0% |
Market context
Hong Kong’s minimum temperature on 6 August is being shaped by a familiar late-summer pattern: hot, humid air and intermittent showers. The Hong Kong Observatory’s August normals put 6 August’s mean minimum at 26.8°C, while recent forecast material points to overnight lows around 26°C and daytime highs near 32°C, which is consistent with a low that stays well above the 25.0°C bracket threshold unless a stronger-than-expected rain band or cooler maritime flow arrives.[3][8]
That is why the current **0% YES** pricing is easy to read as a market expecting the realised low to land outside the listed lower bands. Comparable August readings and climatology for Hong Kong usually keep minima in the mid- to high-20s Celsius, and even when showers are present the published forecast profiles still cluster around 26–27°C rather than anything close to a cool-night outlier.[3][15] The key reference point for traders is therefore not whether it rains, but whether convection, cloud cover, or a late change in wind direction can shave the overnight minimum by at least a degree relative to the forecast consensus.[8][11]
The main catalysts are the Hong Kong Observatory’s short-term bulletins, hourly readings, and any thunderstorm or rain warnings before the overnight minimum is locked in. At 9 a.m., the Observatory had already reported 29°C at headquarters, 86% humidity, and a thunderstorm warning with showers expected to affect Hong Kong later in the morning, which matters because rainfall timing can alter the evening cooling profile.[5] Traders should also watch the updated local forecast and any changes to the rain/shower outlook, since the settlement will ultimately depend on the Observatory’s final “Absolute Daily Min” entry rather than headline daytime conditions.[6][8]
Methodology
Sports-specific comparison page for Lowest temperature in Hong Kong on August 6?. 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 or Manifold.
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.
FAQ
- 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.
- How fast do sports winnings settle?
- Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.
- Can I import form data and lineups?
- This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.
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