Highest temperature in Wellington on August 11?

Platform comparison

Market context

Wellington's maximum temperature on 11 August 2026 will be measured at the airport weather station and recorded in Weather Underground's Daily Observations table, with resolution tied to that specific data source rather than summary figures. The market currently shows 0% implied probability across the crowd, suggesting either extreme confidence in a narrow outcome or sparse liquidity at present pricing.

August is Wellington's winter month, with historical daily maxima typically ranging between 10–13 °C at the airport station. The 0% crowd probability indicates traders are either heavily concentrated in a single temperature band or the market has insufficient participation to reflect genuine uncertainty. Comparable winter-month temperature markets on Polymarket and Kalshi have shown wider probability distributions when liquidity permits; Betfair's weather books often display tighter odds on established stations like Wellington, whilst Smarkets' decimal odds format can obscure probability clustering at the extremes. The resolution methodology—prioritising Daily Observations over Day High & Low summaries—removes a common source of dispute but requires traders to verify Wunderground's specific data hierarchy before settlement.

Traders should monitor MetService forecasts released in early August, which typically provide 10-day outlooks for Wellington. Southern Hemisphere winter patterns, including potential polar outbreaks or föhn-wind events, can drive temperature volatility. The settlement window closes at 12:00 UTC on 11 August, creating a hard deadline for observation data; any station maintenance or reporting delays would affect resolution timing. Cross-platform comparison reveals Polymarket's implicit probability display versus Kalshi's decimal odds structure may influence how traders perceive edge in this narrow-range market.

Methodology

This page compares Highest temperature in Wellington on August 11? 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.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

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.

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.

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.