Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax UK) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
99% | 1% | 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 |
|---|---|
| 26°C | 99% |
| 27°C | 1% |
| 19°C or below | 0% |
| 20°C | 0% |
| 21°C | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 25°C | 0% |
| 28°C | 0% |
| 29°C or higher | 0% |
Market context
The underlying event is the peak daytime heat recorded at Tokyo Haneda Airport on 6 July 2026, a date historically prone to extreme summer temperatures exceeding 35°C. Current crowd-implied probability sits at 0% for any specific range, reflecting market uncertainty rather than a lack of thermal potential. Historical data from July 2026 shows daily highs in Tokyo Haneda ranging from 76°F to 91°F (approximately 24°C to 33°C), with overnight lows between 68°F and 78°F [2]. Recent reports confirm Japan’s summer 2026 has already triggered record heat, with Tokyo reaching 36.8°C on Wednesday and 271 observation points exceeding 35°C [3]. This precedent suggests the 0% probability is likely a liquidity artefact rather than a genuine forecast of cool conditions.
Traders should monitor the Japan Meteorological Agency’s daily heat advisories and Wunderground’s real-time station updates for RJTT, as these are the definitive resolution sources. A recent surge in heat-related news, including the 36.8°C record, indicates that atmospheric conditions are volatile and could push temperatures higher than seasonal averages [3]. The market’s settlement window ends 2026-07-06T12:00:00Z, meaning any late-morning heat spike will directly determine the outcome. Liquidity remains thin, so late entries may face significant price slippage [5].
Regulatory accessibility hinges on jurisdiction: German GlüStV implications may restrict participation for EU residents, while US CFTC reach could affect traders in America. The ‘no-KYC up to $1,500’ feature allows anonymous participation for smaller stakes, enhancing accessibility for this specific weather market without triggering identity verification thresholds. This structure aligns with polymarket-tax.co.uk’s focus on legal clarity, ensuring traders understand the regulatory boundaries before engaging. Facts remain paramount; legal advice is not provided.
Methodology
This overview of Highest temperature in Tokyo on July 6? 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.
- Can I trade anonymously?
- Pseudonymously, yes — up to the KYC threshold. Polymarket Tax UK 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.
- 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.
- 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).
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