Highest temperature in Wellington on July 25?

Platform comparison

Market context

Wellington's highest temperature on 25 July 2026 will be measured at the airport weather station and resolved against historical data from Wunderground. July falls within Wellington's winter season, when mean daily maxima typically range from 11–13 °C, though the city's exposed location and variable wind patterns create volatility around those averages. The 0% crowd probability suggests traders are either absent from this market or treating it as a placeholder awaiting settlement data, a common pattern on niche weather contracts where liquidity pools remain shallow until closer to the event date.

Historical July temperatures at Wellington Airport show a recorded maximum of 20.3 °C (set in 2017) and a minimum of −0.6 °C, illustrating the wide range possible even in mid-winter. Most years see peak temperatures between 12–16 °C on any given day, though cold southerly outbreaks can drive readings below 8 °C whilst föhn-like nor'west winds occasionally push values into the upper teens. Traders comparing platforms should note that Polymarket and Kalshi both list this contract but diverge on fee structures: Kalshi charges 2% on winnings whilst Polymarket takes 2% on both sides, affecting effective odds conversion between decimal and implied probability formats.

Monitoring MetService New Zealand forecasts and NIWA climate outlooks from late June onwards will signal whether July 2026 trends warmer or colder than the 30-year normal. Traders should watch for any announced weather patterns—persistent high-pressure systems or Antarctic incursions—that typically emerge in seasonal forecasts 10–14 days prior to the settlement window closing on 25 July at 12:00 UTC.

Methodology

This page compares Highest temperature in Wellington on July 25? 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

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 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.