Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
46% | 54% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
46% | 54% | 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 |
|---|---|
| 33°C | 46% |
| 32°C | 28% |
| 34°C | 23% |
| 35°C | 4% |
| 31°C | 3% |
| 30°C | 1% |
| 27°C or below | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 36°C | 0% |
| 37°C or higher | 0% |
Market context
Hong Kong’s peak temperature on 6 August is likely to land in the low-to-mid 30s Celsius, with the Observatory’s August normal for mean maximum at 31.6°C and recent summers running hot enough to produce frequent 34°C-plus readings. The Hong Kong Observatory said 2025 was a stormy year overall, but it also logged a highest absolute maximum temperature for June of 35.6°C, underlining that extreme daytime heat remains plausible even in a mixed weather pattern.[2][18]
For this market, the key historical frame is that Hong Kong August heat often tops out around 32°C on average, but the ceiling is materially higher when clear spells align with a hot airmass; educational weather references put the August high-end around 36°C, and 2024 was described by the Observatory as “an exceptionally hot August” with a mean daily maximum of 32.3°C.[4][8] With the crowd currently pricing 0% for the YES side, the market is effectively assuming no published HKO daily extract will later show a top reading in the relevant higher range, which looks aggressive given Hong Kong’s summer variability.[2][4]
Traders should watch the Hong Kong Observatory’s daily extract publication for 6 August, because settlement depends on the final “Absolute Daily Max (deg. C)” once the data is published. Short-term forecast services are already pointing to another warm day near 31–32°C, but forecast numbers can move quickly with cloud, rain and thunderstorm timing; AccuWeather’s outlook for 6 August shows an 88°F high, roughly 31.1°C, while other forecast pages also keep the day in the low 30s.[1][6][7] A late-afternoon shower or a clearer-than-expected spell would be the main dependency for the final reading.
Methodology
Sports-specific comparison page for Highest 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
- 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.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- 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.
- What's the difference between match odds and outright odds?
- Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.
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