Highest temperature in Hong Kong on July 13?

Platform comparison

Market context

Hong Kong is bracing for record-breaking heat in July 2026, with the Hong Kong Observatory forecasting one of the hottest years on record and temperatures in urban areas potentially reaching 35°C or higher [4][10]. The market asks which Celsius range will contain the highest temperature recorded on 13 July 2026, yet the crowd-implied probability for a “YES” outcome sits at 0%, suggesting traders view the specific range offered as implausible given current climate projections [4].

Historically, July in Hong Kong has seen extreme highs, including a record 39°C in Sheung Shui during a sweltering July day [1]. The average high for July is around 32°C (89°F), but recent years have pushed well beyond this, with 2026 expected to feature normal to above-normal temperatures due to ENSO conditions and climate model forecasts [2][7]. This divergence between historical averages and 2026’s elevated outlook frames the 0% probability as potentially misaligned with emerging heat trends.

Traders should monitor daily updates from the Hong Kong Observatory, particularly the “Daily Extract” for 13 July, which will publish the official “Absolute Daily Max” temperature [1]. The seasonal forecast for July–September 2026 already indicates above-normal heat, and any sudden tropical cyclone activity or heatwave announcements could shift settlement expectations [7]. With settlement ending at 12:00 UTC on 13 July, real-time readings from stations like Sheung Shui and Yuen Long will be critical for resolving the contract [1].

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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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.