Highest temperature in Munich on August 20?

Platform comparison

Market context

Munich Airport's daily high temperature on 20 August 2026 will be measured against historical August patterns and recorded in Weather Underground's Daily Observations table, with resolution tied to the specific station reading rather than summary forecasts. The market currently prices all temperature ranges at 0% YES across the board on Polymarket, suggesting either a technical listing issue or extreme uncertainty about which bracket will settle in-the-money once USDC conditional tokens are distributed on Polygon following the settlement window close on 20 August at 12:00 UTC.

August in Munich typically sees highs between 24–27°C, with occasional heat waves pushing into the low 30s. Historical data from 2015 and 2019 recorded peaks of 32–33°C during exceptional summer conditions, whilst cooler years have settled around 22–24°C. The 0% probability across all ranges suggests traders are either awaiting clearer seasonal forecasts or treating this as a placeholder market pending liquidity injection. Weather Underground's Daily Observations table has occasionally diverged from Day High & Low summaries by 1–2°C, a discrepancy that could shift settlement outcomes between adjacent temperature brackets.

Traders should monitor European weather models from mid-August onwards, particularly any high-pressure systems developing over central Europe that could drive anomalous heat. The German Meteorological Service (Deutscher Wetterdienst) publishes extended forecasts roughly two weeks ahead; any significant heatwave warnings would likely trigger repricing. Airport station readings can differ from city-centre measurements by several degrees depending on wind exposure and surface conditions, making the specific Munich Airport location material to final resolution.

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

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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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%.