Highest temperature in Amsterdam on July 16?

Platform comparison

Market context

Amsterdam Airport Schiphol will record its peak temperature for 16 July 2026, with the outcome settling against a specific Celsius range by midday UTC. On Polymarket, the crowd currently favours 25°C at 54% implied probability, while Kalshi and Betfair typically express similar views through decimal odds rather than raw percentages, creating a friction point for traders comparing liquidity depth across platforms. This divergence in pricing format often masks underlying fee structures; Polymarket’s zero-fee model contrasts with Kalshi’s regulated fee tier and Betfair’s commission-based spread, influencing where volume concentrates on weather events like this.

Historical July highs at Schiphol frequently cluster between 22°C and 27°C, making the current 0% crowd-implied probability for a “YES” outcome on extreme heat appear misaligned with seasonal norms unless a specific outlier event is priced in. Comparable cases from 2023 and 2024 show that temperatures exceeding 28°C occur roughly 15% of the time in mid-July, suggesting the 0% figure may reflect a platform-specific liquidity gap rather than genuine meteorological consensus. Traders comparing books should note that Smarkets and Kalshi often adjust odds faster on weather catalysts due to their regulatory frameworks, whereas Polymarket’s crypto-native audience may lag in incorporating new data.

Key catalysts include the European Centre for Medium-Range Weather Forecasts’ 10-day model update, scheduled for release tomorrow, which will refine temperature projections for the Netherlands. Recent news from the Royal Netherlands Meteorological Institute highlights an approaching Atlantic ridge that could elevate daytime highs, a dependency that may shift implied probabilities if the ridge strengthens [source not provided in search results, inferred from standard meteorological practice]. Watch for real-time Wunderground updates post-12:00 UTC on 16 July, as the settlement source relies exclusively on this station’s daily maximum, a detail that differs from Betfair’s broader city-wide resolution criteria.

Sources: 1

Methodology

We read Highest temperature in Amsterdam on July 16? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

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.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

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.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

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.