Highest temperature in Busan on August 17?

Platform comparison

Market context

Busan's highest temperature on 17 August 2026 will be recorded at Gimhae International Airport Station and resolved via Weather Underground's Daily Observations table, the primary source in case of discrepancies with summary figures. The settlement window closes at 12:00 UTC on that date, meaning final readings must be captured before midday. This market carries zero crowd-implied probability, suggesting traders currently expect no extreme heat threshold to be breached on that specific date.

August temperatures in Busan typically range between 26–32°C, with occasional peaks above 33°C during heat waves. Historical data from the Korea Meteorological Administration shows that extreme heat events (above 35°C) occur sporadically in the region, usually tied to Pacific high-pressure systems moving northward. The 0% probability reflects baseline expectations rather than certainty; comparable August markets in previous years have seen modest crowd engagement when thresholds sit within normal seasonal variance.

From a regulatory standpoint, this market's accessibility depends on jurisdiction and operator licensing. Under German GlüStV rules, prediction markets require state approval; operators compliant with these standards typically permit participation from EU residents. US CFTC oversight applies to derivatives-style contracts, though binary weather markets often fall outside direct CFTC reach if structured as information contracts. Many platforms offer no-KYC access up to $1,500 notional exposure per user, a threshold that accommodates retail participation in single-event weather markets without full identity verification, though this varies by operator and regulatory regime.

Methodology

This overview of Highest temperature in Busan on August 17? 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

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.

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.