Highest temperature in Madrid on July 25?

Platform comparison

Market context

Madrid's summer heat peaks in late July, with the city regularly recording temperatures above 35°C during this period. The settlement hinges on the single highest reading captured at Adolfo Suárez Madrid-Barajas Airport on 25 July 2026, measured in Celsius and resolved via Wunderground's historical weather database. The 3% probability currently priced reflects the specificity required: not merely a hot day, but one that exceeds whatever threshold defines the market's upper temperature band.

Historical records show Madrid has experienced extreme heat events in late July with increasing frequency. The 2022 heatwave saw temperatures reach 40°C across the region, whilst July 2023 brought sustained readings above 38°C. However, single-day peaks at the airport station—the precise measurement point—vary considerably depending on atmospheric conditions, urban heat island effects, and timing of afternoon thermals. Comparable July 25th dates in recent years have produced highs between 34°C and 38°C, establishing the baseline against which current pricing should be calibrated.

Traders monitoring this market should track European weather forecasting updates from mid-July 2026, particularly ECMWF and GFS model runs showing Iberian heat patterns. Antecedent conditions matter: persistent high-pressure systems over southern Europe drive the extreme readings that shift probability. For UK-based traders using Klarna or SEPA deposits, book depth typically improves as the settlement date approaches and weather models converge. The airport station's official readings remain the sole arbiter, accessible directly through Wunderground's historical interface without intermediary interpretation.

Methodology

This page compares Highest temperature in Madrid on July 25? with a focus on payment rails and deposit friction. Polymarket accepts USDC on Polygon only; Kalshi only ACH/Plaid (US only); Betfair card/SEPA in EU/UK; Manifold no deposit. Polymarket Klarna UK additionally offers Klarna and SOFORT as fiat on-ramps to USDC. Live odds reflect the Polymarket order book.

Resolution & payout

Settlement path determines payout latency. Polymarket settles on-chain (USDC, minutes). Broker frontends like Polymarket Klarna UK add Klarna/SOFORT as fiat withdrawal options with T+1 processing. Kalshi: USD via ACH (T+1 to T+3). Betfair: local currency via card/SEPA (T+1 to T+5).

FAQ

How does Klarna deposit work on Polymarket Klarna UK?

You enter the deposit amount in EUR/GBP, choose Klarna as the method, run through Klarna's standard authentication (Pay Later or Direct Bank Transfer), and Polymarket Klarna UK converts internally to USDC for the Polymarket order book. Processing: typically under 30 minutes.

Which payment methods are supported?

Klarna (Pay Now / Pay Later), SOFORT, SEPA bank transfer, credit card (Visa/Mastercard), Apple Pay, Google Pay, and direct USDC deposit on Polygon. Availability depends on your jurisdiction.

How fast is SEPA deposit?

SEPA Instant: under 10 seconds. SEPA Standard: 1-2 business days. Both accepted fee-free; the internal USDC conversion runs automatically once EUR lands in the platform account.

Can I deposit with a credit card?

Yes, Visa and Mastercard. Credit card deposits carry a ~2.5% acquirer surcharge (standard for card payments). Apple Pay and Google Pay run on the same card rails — same surcharge.

How do withdrawals work?

Identical methods in reverse. SEPA withdrawal: T+1 (standard) or under 10 seconds (SEPA Instant). Klarna withdrawals process via bank-account refund. USDC withdrawal to external wallet: Polygon gas cost (typically $0.01).