Highest temperature in Madrid on August 7?

Platform comparison

Market context

Madrid’s result depends on the single highest reading logged at Barajas airport during the day, not the headline maximum shown elsewhere, so the market is effectively pricing the upper tail of an already hot forecast rather than the city average. Current public forecasts point to around 37°C in Madrid, with AccuWeather also flagging a yellow extreme-high-temperature warning for 1 pm to 9 pm and a 37°C maximum in the metropolitan area.[2][6]

A 0% crowd-implied YES looks more like funding friction than meteorology: traders who want exposure still have to get money in quickly enough to matter. In a market like this, book depth is often driven by the easiest on-ramp, and that favours payment rails with low transfer friction such as SEPA and instant-card style deposits, while withdrawal convenience through Klarna-linked funding flows or USDC can matter more than the forecast itself. Comparable Madrid heat markets usually sit in the high-30s in late summer, and long-run August averages are far below today’s setup, which is why the current price can stay pinned until fresh intraday observations appear.[1][3][11]

The main catalyst is the actual sequence of observations at the airport station between now and settlement, because the market resolves on Weather Underground’s daily observations table rather than the summary display.[3] Traders should watch for any late-afternoon peak, as Spanish outlets and forecast services are aligned on widespread 35°C-plus heat across the interior, with Madrid specifically called out near 37°C and clear skies, leaving little room for a cooler-than-expected print unless cloud cover or a wind shift arrives late.[2][12]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Madrid on August 7? 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).

UK Frequently Asked Questions

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.

Can UK traders use Klarna to deposit on Polymarket?

Polymarket does not natively accept Klarna. To fund a Polymarket account from the UK, you must first purchase USDC via a crypto exchange (Coinbase UK, Kraken) or Revolut, then transfer to a Polygon-compatible wallet. Some third-party on-ramps (MoonPay, Transak) accept UK debit cards and may support Klarna buy-now-pay-later for crypto purchases.

What payment methods can UK users use for Polymarket?

UK traders typically use: (1) Coinbase UK or Kraken — buy USDC with GBP debit card or bank transfer; (2) Revolut — buy crypto and send to wallet; (3) MoonPay or Transak — Visa/Mastercard UK debit card directly to USDC on Polygon. Standard GBP-to-USDC conversion fees range from 0.5–2.5%.

How long do Polymarket withdrawals take for UK users?

Polymarket withdrawals to your Polygon wallet are instant (on-chain). Converting USDC back to GBP via Coinbase UK or Kraken typically takes 1–3 business days for bank transfer, or near-instant for Revolut. Polygon gas fees are minimal (<$0.01 per transaction).