Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
41% | 59% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
41% | 59% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 31°C | 41% |
| 32°C | 34% |
| 30°C | 13% |
| 33°C | 8% |
| 29°C | 6% |
| 28°C or below | 1% |
| 34°C | 1% |
| 35°C | 0% |
| 36°C | 0% |
| 37°C | 0% |
| 38°C or higher | 0% |
Market context
Munich Airport Station will record its highest temperature on 16 August 2026, with settlement determined by the Daily Observations table on Weather Underground rather than summary figures. The market currently prices a 1% probability that this peak will exceed the upper threshold of the resolution range, reflecting crowd expectation of a relatively cool day for mid-August in Bavaria.
Historical August temperatures at Munich Airport show a median daily high around 24–26 °C, with extremes reaching 32–34 °C during heat waves. The 1% crowd probability suggests traders expect conditions well below the station's recorded August record of 37.5 °C (set in 2015). Comparable European weather markets on crypto platforms have shown that summer temperature extremes tend to cluster in narrow bands; when crowd odds fall below 2%, the underlying event typically requires either an exceptional heat dome or a data-source anomaly. Munich's position in the Alpine foothills generally moderates peak temperatures relative to southern German plains.
Traders should monitor European weather forecasts from mid-July onwards, particularly models tracking Atlantic pressure systems and any blocking high-pressure patterns that could drive continental heat northward. The German Meteorological Service (Deutscher Wetterdienst) publishes extended outlooks 10–14 days ahead; significant shifts in those forecasts often precede repricing in crypto weather markets. Settlement closes at 12:00 UTC on 16 August, so final observations from the airport station must be recorded by that window. Any technical delays in Weather Underground's data feed could affect resolution timing, though such incidents remain rare.
Methodology
This page reads Highest temperature in Munich on August 16? on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
UK Frequently Asked Questions
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- 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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