Highest temperature in Wellington on August 19?

Platform comparison

Market context

Wellington International Airport's maximum temperature on 19 August 2026 will be measured and recorded across multiple weather data platforms, though this market resolves exclusively against Weather Underground's Daily Observations table rather than summary figures. The current 0% implied probability reflects either minimal trading activity or a consensus that the market's specific resolution criteria present unusual settlement risk compared to standard temperature markets.

Historical August temperatures at Wellington Airport typically range between 8–14°C, with extremes rarely exceeding 16°C during winter months in the Southern Hemisphere. The 0% probability suggests traders may be pricing in concerns about data accessibility, platform discrepancies between Weather Underground's observation logs and published summaries, or simply low liquidity on a niche geographic market. Comparable temperature markets on Polymarket and Kalshi show wider participation when tied to major cities or US locations; Wellington-specific contracts remain thinly traded, making probability estimates less reliable as demand signals.

Traders monitoring this market should track Weather Underground's data publication schedule and any service interruptions affecting the Wellington station feed. New Zealand MetService forecasts and any airport weather station maintenance notices would affect actual temperature outcomes. The market's reliance on a single data source—rather than averaging across multiple stations—creates dependency on Wunderground's operational continuity through August 2026. Decimal odds conversion and fee structures vary significantly across platforms; Polymarket's AMM model, Kalshi's fixed spreads, and traditional bookmaker approaches will price this differently based on their respective liquidity pools and risk management approaches.

Methodology

This page compares Highest temperature in Wellington on August 19? 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.

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.

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.