Highest temperature in Madrid on August 2?

Platform comparison

Market context

Madrid’s airport is usually hot in early August, but the market settles on the single highest temperature recorded at Adolfo Suárez Madrid-Barajas Airport on 2 August 2026, so the key question is whether the day reaches a routine summer peak or an outlier spike. Long-run August guides put Madrid daytime highs around 31–33°C, with some warmer spells lifting into the mid-30s, while airport and city records show that extreme heat well above 40°C is possible, though uncommon[2][3][20].

That context makes the current **0% YES** crowd price look conservative rather than impossible: it implies traders are either treating a qualifying top-end reading as very unlikely or are not yet pricing in late-summer heat volatility. Historical climate summaries and travel-weather guides suggest August is normally dry, sunny and hot, with average highs near the low-30s, so the contract is heavily dependent on whether 2 August lands in a standard seasonal band or coincides with a heatwave[1][8][14]. Spain has also seen severe summer heat in recent years, including a 2025 season Reuters reported as the hottest on record, which keeps extreme-temperature risk on the table even if the base rate is low[15].

For traders, the main catalysts are the short-range forecast updates for Madrid, especially any advisories from Spain’s weather service and model runs that shift the city towards the high-30s or above in the settlement window. Airport temperatures can diverge from central Madrid readings, so the relevant dependency is the forecast for Barajas itself rather than the city average, and a clear afternoon peak matters more than overnight conditions. At present there is no obvious sportsbook comparator for this specific contract, so the practical comparison is between the market’s 0% implied chance and the climatological baseline for a hot but usually sub-extreme Madrid August day[2][3][8].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Madrid on August 2? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Best Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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 Best Prediction Markets. 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.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.