Highest temperature in Wellington on July 31?

Platform comparison

Market context

The real-world event is the highest temperature at Wellington International Airport on 31 July, which will likely be a **cool winter day** rather than a heat-driven outlier. With the market pricing **0% YES**, the crowd is effectively treating the upper temperature bands as long-shot underdogs, and the available forecasts support that view: Wellington is expected to top out around **11–12°C** on Friday, with patchy rain and brisk northerly winds keeping the day subdued.[1][5][16]

Historically, Wellington’s late-July temperatures cluster in the low teens, with monthly averages around **11–12°C** and daily highs commonly near **53°F/12°C** rather than anything much warmer.[2][14][16] That makes the consensus line look firmly anchored in the cooler ranges, so the value question is not whether it gets hot, but whether the airport can briefly spike above forecast highs if cloud breaks or a northerly flow mixes down warmer air. On that framing, the favourite is the lower range bands, while any **higher-temperature band** is the contrarian play.[2][14]

For catalysts, the key watch is the final overnight and morning forecast updates from local and global weather providers, because Wellington’s temperature outcome will depend on rain timing, cloud cover and wind strength more than on seasonality alone.[1][4][6][13] Current advisories point to northerly winds that may become severe in exposed places, but not a strong warming setup, so any drift in the market should come from short-term forecast revisions rather than a fresh weather regime.[4][6][15]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Wellington on July 31? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Who Will Win 2026, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Who Will Win 2026. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.