Highest temperature in Wellington on August 4?

Platform comparison

Market context

Wellington International Airport is the reference point for a one-day temperature outcome, and the current crowd-implied **0% YES** suggests the market is treating a qualifying high as effectively impossible. That is notably out of line with the live weather context: nearby forecast sources for Wellington are showing daytime maxima around **10–13°C** and occasionally **14°C**, which would still sit comfortably within the lower temperature bands if the contract is range-based. BBC Weather’s observations for Wellington/Intl also show a current temperature around **10°C**, reinforcing that this is a cool winter setup rather than a warm outlier. [5][9][12]

Historically, August in Wellington is one of the city’s coldest, steadiest months, with average highs around **12°C** and low day-to-day variance, so settlement usually hinges on whether the airport catches a brief midday lift rather than any large temperature surge. Comparable August forecasts and climate summaries cluster around the low teens, which argues against any premium being attached to very high ranges. On that framing, a **0% YES** quote is consistent with analysts expecting the upper buckets to remain untouched, although it may still understate the chance of a modest late-morning rebound if winds ease and cloud breaks. [4][8][18]

For traders, the main catalyst is the intraday evolution of the Wellington Intl Airport observation itself, because the market resolves on the **highest recorded temperature for the full day** rather than an average or evening close. The practical watchlist is the hourly forecast drift, cloud cover, wind direction, and any rain bands that could cap the daytime maximum; current forecast pages point to light to moderate winds and cool conditions, with some sources still flagging showers. There is no meaningful sportsbook-style line to compare here, so the cross-platform read is mainly prediction market price versus the weather desk consensus, and at present both lean heavily towards a low-temperature outcome rather than an upside surprise. [3][6][7][15][16]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.

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 Best Prediction Markets. 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.

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.