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Highest temperature in Amsterdam on July 31?

Regulatory snapshot for "Highest temperature in Amsterdam on July 31?": platform geo-block status, KYC thresholds, tax implications.

24°C 100% 18°C or below 0% 19°C 0% 20°C 0% Volume: $84K Liquidity: $162K Closes: 31 Jul 2026
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Highest temperature in Amsterdam on July 31?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Polymarket Legal UK) Pick
polygram.ink (preferred broker)
100% 0% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Trade this market →
Polymarket (direct)
polymarket.com
100% 0% 0% Geo-blocked in US/UK/EU USDC, on-chain Trade this market →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Trade this market →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Trade this market →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Trade this market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
24°C100%
18°C or below0%
19°C0%
20°C0%
21°C0%
22°C0%
23°C0%
25°C0%
26°C0%
27°C0%
28°C or higher0%

Market context

Amsterdam Airport Schiphol’s highest temperature on 31 July will be the settlement point, and the current 0% YES price implies the market is treating an extreme reading as very unlikely rather than impossible. Amsterdam’s July climate is usually moderate: long-run normals cluster around the low 20s Celsius, with typical daily highs near 22°C and only occasional spikes much above that[8][11][13]. Comparable historical summaries show Amsterdam’s hottest July readings are far above average but still rare, with a cited all-time July extreme of 32°C and an Amsterdam record of 36.4°C in late July 2019, which is useful context for judging how far out of line a very hot settlement would be[10][14].

For traders, the immediate drivers are short-term forecast updates, any local maritime or north-westerly airflow changes, and the day’s actual high as reported at Schiphol rather than central Amsterdam. Forecast pages for 31 July have pointed to highs in the mid-to-high 20s Celsius, which would sit well above the monthly norm but below the levels needed to challenge historical city records[3]. Because the source is Wunderground’s Schiphol history page, late-day temperature peaks and the station’s exact hourly maximum matter more than general city averages; a warm afternoon can still settle below a widely shared forecast if cloud cover, wind or timing limit the station maximum[3][12].

From a market-access angle, German GlüStV rules can affect whether residents can legally use a given platform, while US CFTC reach is relevant where a product is considered within US regulatory scope; that matters here because the event is a weather outcome rather than a pure sports or politics contract. The “no-KYC up to $1,500” framing means smaller positions may be available with lighter identity checks, but it does not remove geofencing, sanctions screening or any jurisdiction-based restrictions on access to this specific market.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of Highest temperature in Amsterdam on July 31? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.

Resolution & payout

On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.

FAQ

Is Polymarket legal in my country?
Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Legal UK has a different geo footprint.
Do I need to KYC for Polymarket Legal UK?
Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
Are prediction markets gambling?
Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
Is there a withdrawal cap?
No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
What if regulation changes?
If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Legal UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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