Highest temperature in Amsterdam on July 31?

Platform comparison

Market context

Amsterdam Airport Schiphol’s highest temperature on 31 July will be read from Wunderground’s daily history page, and the market settles on the Celsius range containing that peak. With the crowd pricing **0% YES**, the market is treating a qualifying warm outcome as extremely unlikely, which is not the same as impossible: on temperature markets, a low implied probability often reflects the breadth of the settlement bands, the local climate, and uncertainty about the exact daytime maximum rather than a firm view on the weather itself. Amsterdam’s July climate norm is around the low 20s Celsius for daytime highs, with typical averages near 22°C and some seasonal upside into the upper 20s or low 30s on warmer days.[3][8][9][13]

Historical framing matters because Schiphol can run a little differently from downtown Amsterdam, and a single afternoon spike is what counts here. Forecasts available on Friday point to a high near 26°C with mostly cloudy conditions and a small drizzle chance, which would sit comfortably in the common summer range but still leaves room for a lower or higher verified maximum depending on cloud breaks and wind.[2] For comparison, platforms price this kind of market differently: Polymarket shows a direct implied probability, while Kalshi and Betfair typically translate the same view into American or decimal odds, and Smarkets into decimal odds with its own fee structure; the practical effect is that the same weather risk can look cheaper or richer once exchange fees and spread are included. KYC access also differs by venue, which can matter if a trader wants the broadest reach rather than the tightest price.

The main catalysts are the published hourly forecast updates, any overnight model shifts, and the actual midday sunshine or sea-breeze pattern at Schiphol, since these can move the day’s maximum several degrees even after the morning forecast is set. By settlement time, the key question is not the average temperature but whether the station records a peak that lands inside a specific Celsius bucket on the Wunderground history page.[2] Traders watching cross-platform pricing should also note that prediction markets can reprice faster than traditional bookmakers, but bet settlement conventions, fees and jurisdictional KYC can make a quoted probability or decimal price on one venue non-comparable with another until costs are adjusted.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Amsterdam on July 31? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.