Highest temperature in Hong Kong on August 13?

Platform comparison

Market context

On 13 August 2026, the Hong Kong Observatory will record the day's highest temperature in degrees Celsius to one decimal place. This market resolves based on that official reading, published in the Observatory's Daily Extract once the date has passed and data finalised. The settlement window closes at 12:00 UTC on that date, though resolution itself depends on publication of the meteorological record rather than clock time.

Hong Kong's August temperatures are historically consistent within a narrow band. Daily maxima in mid-August typically range from 31 to 34 degrees Celsius, with extreme heat events (35°C or above) occurring in roughly one year per decade during this period. The 0% crowd probability reflects the market's current structure: traders have not yet selected a temperature range as the likely outcome, suggesting either thin initial liquidity or genuine uncertainty about which bracket will contain the actual reading. Historical volatility in August heat events—influenced by tropical cyclone proximity and monsoon patterns—means that seemingly narrow temperature bands can shift meaningfully based on atmospheric conditions weeks before the settlement date.

Traders should monitor the Hong Kong Observatory's seasonal forecasts and any tropical cyclone advisories issued in late July and early August 2026, as these directly affect temperature trajectories. The Observatory publishes monthly climate summaries and extended outlooks that provide context for extreme-temperature probabilities. From a regulatory standpoint, this weather derivative falls outside CFTC derivatives oversight in the United States when offered without leverage or margin, and under German GlüStV rules it may qualify for exemption if structured as a prediction market rather than a wagering contract. Traders in jurisdictions permitting prediction markets without KYC up to $1,500 notional exposure should verify their local rules; this market's accessibility depends on the platform's regulatory registration and the trader's location.

Methodology

This overview of Highest temperature in Hong Kong on August 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 Is Kalshi Legal in California?

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.

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.

What happens during a tax audit?

You're responsible for documenting your trades. Is Kalshi Legal in California exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.

Are prediction markets gambling?

Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.