Highest temperature in Hong Kong on July 13?

Platform comparison

Market context

Hong Kong is bracing for extreme heat on 13 July 2026, with the Hong Kong Observatory forecasting temperatures that could rival record-breaking July highs. Historical data shows Sheung Shui reached 39°C during Hong Kong’s hottest July day on record, while urban areas typically peak around 35°C under “extremely hot” conditions defined by the Observatory [1][10]. The current 0% crowd-implied probability for the YES outcome suggests traders view a specific temperature range as unlikely, yet 2026 is projected to be one of Hong Kong’s hottest years, potentially pushing daily maxima toward or beyond 38°C in suburban locations [4][1].

Traders should monitor the Observatory’s daily extract for the “Absolute Daily Max” reading, which settles this USDC-denominated contract on Polygon using conditional tokens. The seasonal forecast for July–September 2026 indicates normal to above-normal temperatures, influenced by the latest ENSO status and climate models [7]. A recent announcement from the Observatory warns of record-breaking heat in 2026, aligning with UN climate crisis alerts and increasing the likelihood of extreme heat days exceeding 35°C [10]. Settlement depends entirely on finalized data published in the Daily Extract, meaning no resolution occurs until the official figure is confirmed [5].

The on-chain mechanics lock positions in USDC, with payouts determined by the temperature range containing the highest recorded Celsius value. Given the forecasted heatwave and historical precedents, the market’s zero probability may reflect a mismatch between trader expectations and the Observatory’s elevated temperature projections for 2026 [4]. Watch for real-time updates from the Observatory’s regional weather page, as grass and air temperature readings will directly impact the contract’s outcome [5].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Hong Kong on July 13? 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 PolyGram, 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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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 PolyGram 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.