Highest temperature in Amsterdam on August 16?

Platform comparison

Market context

The market is pricing the likelihood that Amsterdam Airport Schiphol will record a peak temperature on 16 August 2026 within a specific range, with resolution determined by the Daily Observations table on Weather Underground rather than summary figures. The 0% implied probability suggests the crowd has already assigned this outcome to an extreme tail—either dismissing it as implausibly high or low—rather than genuinely believing it impossible.

August temperatures at Schiphol historically cluster between 18°C and 24°C, with extremes rare. The station's all-time August high stands at 30.7°C, recorded in 2003 during Europe's exceptional heatwave. Most years see peak August readings in the low-to-mid 20s. The current 0% probability likely reflects either that the market's temperature range sits well outside historical norms, or that traders view the specified range as so narrow it captures fewer than one-in-a-thousand outcomes. Without knowing the exact range being priced, assessing whether this represents genuine scarcity or mispricing requires checking whether the band sits above 28°C (genuinely rare) or within the 20–24°C zone (routine).

European summer forecasting models typically gain reliable skill only 10–14 days ahead. Traders should monitor late July and early August weather pattern shifts—particularly whether Atlantic blocking develops, pushing warm continental air northward—as these drive August temperatures at Schiphol. The Dutch meteorological institute KNMI publishes monthly outlooks; their July 2026 seasonal guidance will be the first concrete signal of whether conditions favour above or below-average heat.

Methodology

This page reviews Highest temperature in Amsterdam on August 16? 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 Who Will Win 2026, 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 Who Will Win 2026. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.