Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
56% | 44% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
56% | 44% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 22°C | 56% |
| 23°C | 20% |
| 21°C | 19% |
| 24°C or higher | 7% |
| 14°C or below | 0% |
| 15°C | 0% |
| 16°C | 0% |
| 17°C | 0% |
| 18°C | 0% |
| 19°C | 0% |
| 20°C | 0% |
Market context
Munich's peak temperature on 21 August 2026 will be measured at Munich Airport Station using Weather Underground's Daily Observations table, with resolution based on the highest recorded reading in Celsius rather than summary figures.
August temperatures in Munich typically range between 17–27°C, though heat waves can push readings into the low 30s. Historical data from the past decade shows that mid-to-late August rarely exceeds 30°C at the airport station, with most years settling in the 24–28°C band. The 0% crowd probability suggests traders expect a notably cool day relative to seasonal norms, or that the market reflects uncertainty about which specific temperature bracket will resolve. Comparable August days at Munich Airport have occasionally reached 29–31°C during European heat events, but sustained temperatures above 32°C remain uncommon for this period and location.
Traders should monitor European weather patterns from mid-August 2026, particularly high-pressure systems moving across central Europe that could drive temperatures upward. The specific resolution source—Weather Underground's Daily Observations table at Munich Airport—differs from casual weather summaries, meaning the exact measurement methodology matters. Any significant heat dome or Atlantic ridge positioning in late summer could shift outcomes materially. Current crowd sentiment at 0% YES suggests either confidence in below-average conditions or limited engagement with the market; incoming weather forecasts from early August onwards will be the primary catalyst for probability shifts.
Methodology
Sports-specific comparison page for Highest temperature in Munich on August 21?. 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.
UK Frequently Asked Questions
- 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.
- 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.
- 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%.
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