Highest temperature in London on July 13?

Platform comparison

Market context

The market resolves on whether London City Airport records a temperature above a specific threshold on 13 July 2026, with current forecasts suggesting a maximum near 24°C to 28°C for the day. While some heatwave projections for mid-July 2026 hint at peaks reaching 32°C–34°C later in the week, the specific date of 13 July currently shows a 7% crowd-implied probability for the YES outcome, reflecting uncertainty about whether extreme heat will arrive precisely on that day [2][4][6].

Historical context shows London’s record high is 40.2°C, recorded at Heathrow in July 2022, but London City Airport typically records slightly lower temperatures due to its coastal location and urban microclimate [7]. Comparable July days in recent years have seen highs between 26°C and 30°C, making a sub-25°C outcome plausible if the heatwave peaks later, as forecasters indicate the absolute peak may occur on 15 July rather than 13 July [6].

Traders should monitor Met Office daily updates and Wunderground’s real-time station data for EGLC, as the market resolves strictly on the highest temperature recorded at London City Airport Station [2][4]. Regulatory accessibility hinges on German GlüStV rules, which classify such weather markets under gambling oversight, and US CFTC reach, which may restrict non-KYC participation for US residents; the “no-KYC up to $1,500” feature allows limited access for users in jurisdictions where full registration is not mandated, but does not override local licensing requirements [2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of Highest temperature in London on July 13? 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

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.

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), Polymarket Tax UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.