Highest temperature in Hong Kong on June 7?

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Market context

The Hong Kong Observatory will record the highest temperature in degrees Celsius on 7 June 2026, with the market resolving to whichever temperature band contains that single daily maximum reading. The crowd currently implies 0% probability across all outcome ranges, suggesting no consensus has formed on where June temperatures will settle.

Hong Kong's June climate is well-documented. Historical data shows June daily maxima typically range between 29°C and 33°C, with occasional peaks above 34°C during heat waves. The 30-year average high for early June sits around 31°C. The 0% implied probability across all brackets reflects the market's nascent state rather than genuine certainty that no temperature will be recorded—settlement depends entirely on Hong Kong Observatory's published daily extract data, which becomes available after the date passes. Traders should recognise that June represents the transition into Hong Kong's hot season, when subtropical high-pressure systems increasingly dominate the region's weather patterns.

The relevant catalyst is the onset of the southwest monsoon season, typically established by early June, which can either moderate temperatures through increased cloud cover and precipitation or intensify heat through stagnant air masses. Recent meteorological outlooks from regional forecasting bodies will provide directional guidance on whether June 2026 tracks toward cooler or warmer-than-average conditions. The market's current state suggests early liquidity and price discovery remain pending; traders entering positions should anticipate that consensus will crystallise only as June approaches and seasonal forecasts become more refined.

Methodology

This page reviews Highest temperature in Hong Kong on June 7? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Who Will Win — the application we operate, where you trade directly against 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?

On Who Will Win, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Who Will Win is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

What does it cost to trade on Who Will Win?

Zero. Who Will Win routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.