Highest temperature in Wellington on July 13?

Platform comparison

Market context

Wellington is mid-winter, and the highest temperature recorded at Wellington International Airport on 13 July 2026 is expected to be cool, with the market pricing the YES outcome at 0%. This reflects the seasonal reality that July highs in Wellington typically range between 8°C and 14°C, making extreme warmth statistically negligible. Historical data shows Wellington (Kelburn) reached its all-time maximum of 30.3°C on a different date, not in mid-July, reinforcing that a summer-like spike during this period is implausible [1].

Traders should monitor real-time Wunderground updates for the NZWN station, as the market resolves strictly on the day’s peak Celsius reading from that source. While no immediate weather announcements are scheduled, the dependency on a single data feed means any gap or delay in Wunderground’s reporting could affect settlement clarity. Recent forecasts for Wellington in July 2026 indicate average warmest days hovering near 10–12°C, with no heatwave activity expected [2][7].

On Polymarket, this contract trades as a conditional token pair settled in USDC on Polygon, where the 0% YES price signals near-certainty of the NO outcome. The on-chain mechanics lock in the resolution source and timestamp, ensuring transparency once the settlement window closes at 2026-07-13T12:00:00Z. Given the historical climate patterns and current pricing, the market aligns with empirical expectations for mid-winter temperatures in Wellington.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Wellington on July 13? 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 Kalshi UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

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.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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 Kalshi UK 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.