Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) Pick polygram.ink (preferred broker) |
45% | 55% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
45% | 55% | 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 | 45% |
| 21°C | 26% |
| 23°C | 17% |
| 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 weather on 21 August 2026 will determine which temperature band captures the day's peak reading at the airport station. The settlement hinges on Weather Underground's Daily Observations table rather than summary figures, a distinction that occasionally matters when automated systems record differently across measurement intervals. Current crowd positioning shows no meaningful conviction toward any specific temperature range, reflecting the typical uncertainty inherent in forecasting conditions nearly two years ahead.
August in Munich historically produces highs between 24–27°C, though extremes have reached 32°C during heat waves. The 2022 European summer saw Munich peak at 35.2°C in mid-August, whilst cooler years have topped out around 21°C. These historical bounds frame the plausible range; traders should note that late-summer Munich rarely experiences single-digit highs or temperatures exceeding 36°C. Comparable August days from the past decade cluster most frequently in the 25–28°C band, providing a baseline against which any forecast anomalies should be weighed.
Catalysts affecting the eventual outcome include Atlantic weather patterns developing through summer 2026, which typically drive either warm continental air masses or cooler Atlantic systems into Bavaria by late August. The North Atlantic Oscillation and any persistent high-pressure systems over central Europe will be material. Traders should monitor European meteorological forecasts beginning in early August 2026, when deterministic models gain reliability for the specific date. Airport station maintenance or sensor recalibration could theoretically affect readings, though such events are rare and usually documented by Weather Underground.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Today, which mirrors the Polymarket order book directly.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
UK Frequently Asked Questions
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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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