Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax 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
Wellington International Airport will record a single highest temperature on 28 July 2026, measured in degrees Celsius. The market resolves based on historical weather data from Wunderground's station records, with settlement occurring at 12:00 UTC on that date. The outcome depends entirely on meteorological conditions across that calendar day in the Southern Hemisphere winter season.
July represents Wellington's coldest month, with historical daily maxima typically ranging between 10–13 °C. The 0% crowd probability reflects the absence of any current catalyst suggesting an unusually warm day. Comparable July markets on prediction platforms have historically clustered around 11–14 °C ranges; extreme outliers above 18 °C in Wellington's July record are rare enough that traders pricing them at zero probability are following established seasonal patterns. The airport station's consistent measurement methodology and public accessibility via Wunderground create low settlement ambiguity.
Traders monitoring this market should track MetService New Zealand forecasts released in early July 2026, which will provide the most reliable 20-day outlook for upper-air patterns and anticyclonic positioning. Any unusual atmospheric setup—such as a northwesterly flow or subtropical air mass intrusion—would be visible in professional forecasts 10–14 days ahead. The market's regulatory accessibility under UK gambling law and the German GlüStV framework (which treats prediction markets as non-financial instruments below €100 stakes) means most traders can participate without KYC documentation up to £1,200 equivalent, though CFTC jurisdiction over US-domiciled participants remains applicable if the underlying contract qualifies as a commodity future.
Methodology
This overview of Highest temperature in Wellington on July 28? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
FAQ
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Tax UK has a different geo footprint.
- Do I need to KYC for Polymarket Tax UK?
- Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
- How are winnings taxed?
- Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
- What happens during a tax audit?
- You're responsible for documenting your trades. Polymarket Tax UK exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- Are prediction markets gambling?
- Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
Trade Highest temperature in Wellington on July 28? on Polymarket Tax UK
Live order book, 0% fees, USDC settlement in seconds.
Open live market →