Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Review UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
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
The temperature that matters is the highest **observed** reading at Wellington International Airport on 8 August, not the headline day high, so a programme that tracks this market should pull the Weather Underground **Daily Observations** table and update the maximum Celsius value as fresh station data posts. Current forecasts point to a cool, windy day: AccuWeather has Wellington at about **57°F/14°C** for the day with cloud, a steady breeze and precipitation risk, while other forecast sites cluster around low-teens Celsius highs, which is consistent with the market’s present **0% YES** pricing for any materially hotter outcome.[2][3][6][19]
Historically, Wellington in August is usually a low-teen Celsius city, with long-run summaries commonly placing highs around **12°C** and overnight lows near **9°C**.[16][17][18][19] That makes the relevant pricing question less about whether the airport gets warm and more about whether the station log contains a brief spike into the next bracket; for a power-user, the cleanest approach is to monitor successive observation timestamps, compare the running maximum against the settlement band, and avoid relying on forecast widgets that often round or display different reference values.[1][8][12]
The main catalysts are simple: any shift in the local wind, cloud and rain timing through the day can change the marginal maximum, and the market will settle only on what appears in Weather Underground’s station observations by the window close.[2][8][15] Wellington is currently forecast to stay cloudy, breezy and intermittently wet, which favours a ceiling in the low teens rather than a late spike, so a bot watching this market should prioritise the live observations feed and not the general forecast pages, which can diverge from the settlement source.[2][7][8]
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 Polymarket Review UK, which mirrors the Polymarket order book directly.
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.
UK Frequently Asked Questions
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
Trade Highest temperature in Wellington on August 8? on Polymarket Review UK
Live order book, 0% fees, USDC settlement in seconds.
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