Highest temperature in Madrid on August 14?

Platform comparison

Market context

Madrid's highest temperature on 14 August 2026 will be measured at Adolfo Suárez Madrid-Barajas Airport using Weather Underground's Daily Observations table as the authoritative source. The market currently shows 0% probability, suggesting traders expect the temperature to fall outside all available resolution ranges or that no data will be recorded.

August temperatures in Madrid typically range from 25°C to 36°C, with historical highs occasionally exceeding 38°C during heat waves. The city experienced a peak of 40.5°C in August 2021 and regularly records temperatures above 35°C throughout the month. The 0% crowd probability indicates either an expectation of unseasonably cool conditions or uncertainty about the specific ranges offered in this market. Historical precedent suggests Madrid's August temperatures cluster heavily in the 32–37°C band, making extreme outliers less probable but not unprecedented.

The primary catalyst affecting this market is the accuracy and availability of Weather Underground's Daily Observations data from Madrid-Barajas Airport on the settlement date. Traders should monitor whether the airport station maintains consistent reporting throughout August 2026, as any gaps or discrepancies between the Daily Observations and Day High & Low sections could affect resolution. European summer weather patterns and any unusual atmospheric conditions in the weeks preceding 14 August will influence actual temperatures, though these remain difficult to predict two years in advance. The market's current zero probability warrants scrutiny of the available temperature ranges to determine whether they genuinely reflect unlikely outcomes or represent a data-driven assessment of the forecast.

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Madrid on August 14? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

UK Frequently Asked Questions

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are UK election prediction markets available from the UK?

Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.