Highest temperature in Hong Kong on July 18?

Platform comparison

Market context

Hong Kong's peak daily temperature on 18 July 2026 will be recorded by the Hong Kong Observatory and published in their Daily Extract dataset. The settlement hinges on the Observatory's official "Absolute Daily Max" figure in Celsius to one decimal place, with resolution delayed until that data is finalised and made publicly available through their climate information system.

July in Hong Kong typically sees daily maxima between 32–34°C, though extremes have reached 36–37°C during heat waves. Historical records show that mid-July temperatures cluster around 33°C as a median, with the 90th percentile near 35°C. The current 0% probability across all temperature bands suggests either incomplete market formation or that traders are awaiting seasonal forecasts closer to the date. Comparable markets on Hong Kong Observatory data have resolved reliably once the Daily Extract is published, usually within days of the target date.

Traders monitoring this market should track the Hong Kong Observatory's seasonal outlooks and any issued heat wave warnings in early July 2026, as these typically precede anomalous temperatures. The Observatory publishes monthly climate summaries and issues special weather advisories during extreme conditions. For programmatic approaches, the Daily Extract is machine-readable once published; setting conditional orders tied to Observatory data releases would allow automated settlement verification. The key dependency is publication timing—the market cannot resolve until official data appears in the climate database, making this suitable for delayed-settlement automation workflows rather than real-time trading strategies.

Methodology

This page reviews Highest temperature in Hong Kong on July 18? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Review UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Review UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.