Highest temperature in Munich on August 7?

Platform comparison

Market context

Polymarket is pricing this Munich airport temperature contract at **0% YES** today, which implies the market sees almost no chance that the day’s maximum at Munich Airport lands in the Yes range before the settlement window closes and the 7 August reading is fixed in USDC-settled conditional tokens on Polygon. In practical terms, that means traders are assigning negligible weight to a late-day spike large enough to move the recorded high into the relevant band.

That reading sits against a fairly ordinary August profile. Munich’s August averages are warm but not extreme: long-run guidance shows daily highs around the mid-20s Celsius, with WeatherSpark putting the month’s typical daytime high near 25°C and AccuWeather’s August forecast for Munich Airport showing highs mostly in the high teens to low 20s Celsius, with 7 August around 24–25°C on several forecast products.[9][1][8] Comparable early-August forecasts also point to changeable conditions rather than heatwave territory, with rain or cloud mentioned on several services.[2][3]

For a trader, the key catalyst is the actual airport observation through Wunderground’s Munich Airport Station page, because this market resolves to the highest temperature recorded there on 7 August, not the citywide forecast or a nearby station. Watch for updated short-range forecasts from late morning into the afternoon, any convective burst that could briefly lift the day’s maximum, and the exact cut-off in the settlement window at 12:00 UTC, since the final outcome depends on the daily peak as captured by the source feed rather than on any single forecast model.[1][17][19]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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 PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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%.