Highest temperature in Tokyo on August 14?

Platform comparison

Market context

On 14 August 2026, the highest temperature recorded at Tokyo Haneda Airport Station will determine this market's settlement. The Japan Meteorological Agency publishes daily observations through Weather Underground's platform, with the Daily Observations table serving as the authoritative source rather than summary high-low figures. The current 0% crowd probability suggests traders are pricing in either confidence in a specific temperature range or minimal liquidity at present.

Tokyo's August climate is consistently hot and humid, with historical daily highs typically ranging from 32–35°C. The 2023 and 2024 August records at Haneda showed peaks of 35.1°C and 34.8°C respectively, establishing a baseline for typical summer conditions. Anomalously high temperatures above 36°C occur occasionally but remain statistically uncommon for mid-August; the 0% probability may reflect traders' assessment that extreme heat is unlikely, or simply that the market has not yet attracted sufficient participation to establish meaningful odds.

From a regulatory standpoint, this market's accessibility varies by jurisdiction. Under German GlüStV rules, prediction markets require licensing; traders in Germany should verify their platform's compliance status. The US CFTC's reach extends to US persons trading on offshore platforms, though enforcement remains selective. For UK-based traders, the no-KYC threshold of £1,000–£1,500 typically applies to smaller stakes, meaning this single-event weather market may fall within simplified customer verification requirements depending on the operator's risk framework. Traders should confirm their own regulatory obligations before participation.

Methodology

This overview of Highest temperature in Tokyo on August 14? 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.

UK Frequently Asked Questions

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.

Is Polymarket regulated by the UKGC?

No. Polymarket is not licensed by the UK Gambling Commission (UKGC). It is a decentralised prediction market operated under US regulation. UK traders can use it but do not benefit from UKGC dispute resolution or player protection requirements.

What are the HMRC tax rules on Polymarket profits for UK traders?

Polymarket profits are treated as cryptocurrency disposal events by HMRC. Each USDC settlement is a taxable event subject to Capital Gains Tax (CGT). For 2026/27, the CGT rate is 18% (basic rate) or 24% (higher rate). The annual CGT exemption is £3,000. Report via HMRC Self Assessment if your total crypto gains exceed £3,000 or proceeds exceed £50,000.

Does Polymarket KYC apply to UK users?

Yes. Polymarket requires KYC (Know Your Customer) verification for all users, including UK residents. You must provide a government-issued photo ID and a selfie. The process typically takes 5–10 minutes via their ID verification provider.

What is the legal difference between Polymarket and Betfair Exchange for UK traders?

Betfair Exchange is UKGC-licensed, meaning UK consumer protections apply and winnings are typically tax-free. Polymarket is not UKGC-licensed — it operates under decentralised blockchain rules. Profits from Polymarket are subject to HMRC CGT as crypto disposals. Choose based on your regulatory preference and tax situation.