Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 13°C | 100% |
| 7°C or below | 0% |
| 8°C | 0% |
| 9°C | 0% |
| 10°C | 0% |
| 11°C | 0% |
| 12°C | 0% |
| 14°C | 0% |
| 15°C | 0% |
| 16°C | 0% |
| 17°C or higher | 0% |
Market context
Wellington’s peak temperature on 8 August is the key settlement variable, and the market is currently pricing **0% YES**, implying the crowd sees the required Daily Observations value on Weather Underground as highly unlikely to land in the winning range. That looks directionally consistent with the broader forecast picture: AccuWeather’s day view has Wellington at about 57°F/14°C with cloud, wind and a later risk of rain, while Wunderground’s hourly page also shows a damp, breezy pattern rather than a strong daytime warm-up.[2][11]
Historically, Wellington in August is a relatively narrow-temperature market because the city’s winter climatology is stable, with average highs around 12°C to 13°C and only modest day-to-day variation.[1][10][17][18] That matters for a range-based contract: the highest observed temperature can easily differ from headline “day high” summaries, especially when marine influence and wind cap afternoon gains. In practice, a 0% implied price often reflects either a very tight range or a market that has been slow to reprice around fresh forecast changes; here, the available model outputs point to conditions near the seasonal mean rather than an outsized warm spike.[1][2][17]
The main catalysts are the live Weather Underground observations at Wellington Intl Airport and any late-shifting forecast updates on the day, especially changes in cloud, wind and rain timing that affect whether the station briefly touches a higher Celsius band before the window closes.[11][20] For cross-platform comparison, the useful benchmark is that mainstream forecast services are broadly aligned on a cool, cloudy, windy day, so any sportsbook line or analyst consensus materially above the current prediction-market price would likely need an explicit expectation of an unusually warm midday reading rather than a routine August outcome.[2][3][4]
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.
- 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 Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
Trade Highest temperature in Wellington on August 8? on Best Prediction Markets
Live order book, 0% fees, USDC settlement in seconds.
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