Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legal in California) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Go to the live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Go to the live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Go to the live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Go to the live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 13°C | 100% |
| 9°C or below | 0% |
| 10°C | 0% |
| 11°C | 0% |
| 12°C | 0% |
| 14°C | 0% |
| 15°C | 0% |
| 16°C | 0% |
| 17°C | 0% |
| 18°C | 0% |
| 19°C or higher | 0% |
Market context
On 15 August 2026, Wellington International Airport's meteorological station will record a daily maximum temperature in Celsius. This market resolves to whichever temperature band captures that single highest reading from the Daily Observations table on Weather Underground, with explicit precedence given to that granular dataset over any summary figures. The 0% crowd probability reflects the market's nascent state rather than meteorological certainty; August is Wellington's winter month, with historical daily maxima typically ranging between 10–14°C, though outliers do occur.
Wellington's winter weather patterns show considerable year-to-year variability driven by Southern Ocean pressure systems and the occasional subtropical air mass incursion. Historical August records at the airport station span from below 8°C to above 18°C in rare warm events, providing wide resolution bands. The current probability distribution suggests traders have not yet priced meaningful conviction into any specific temperature range, a common feature in long-dated weather markets where seasonal forecasting skill remains limited beyond six weeks.
From a regulatory standpoint, this market's accessibility depends on jurisdiction. Under Germany's GlüStV framework, prediction markets on weather outcomes typically fall outside gaming licensing if structured as financial instruments; however, operators must verify classification with BaFin. In the US, the CFTC's exemption for certain prediction markets on non-financial events may apply, though enforcement posture remains unsettled. Platforms offering no-KYC access up to $1,500 notional exposure often rely on this regulatory ambiguity, meaning traders should confirm their venue's compliance status before participation. Settlement occurs 15 August 2026 at 12:00 UTC, allowing real-time station data to be captured before resolution.
Methodology
This overview of Highest temperature in Wellington on August 15? 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. Is Kalshi Legal in California has a different geo footprint.
- 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.
- Can I trade anonymously?
- Pseudonymously, yes — up to the KYC threshold. Is Kalshi Legal in California stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.
- Is there a withdrawal cap?
- No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Is Kalshi Legal in California would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
Trade Highest temperature in Wellington on August 15? on Is Kalshi Legal in California
Live order book, 0% fees, USDC settlement in seconds.
Open live market →