Highest temperature in Hong Kong on June 1?

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Market context

On 1 June 2026, the Hong Kong Observatory will record the day's maximum temperature in degrees Celsius. Polymarket currently prices this contract at 0% YES, meaning traders are assigning negligible probability to any single temperature band resolving true. The settlement window closes at 12:00 UTC on that date, though resolution itself depends on the Observatory publishing its "Absolute Daily Max" figure in the Daily Extract dataset—a process that typically occurs within days of the observation date. Traders holding conditional tokens representing specific temperature ranges will see their positions settle once that official reading becomes available.

Hong Kong's June climate is characterised by early monsoon transition and rising humidity ahead of the summer peak. Historical data from the Observatory shows June daily maxima typically range between 28–32°C, with occasional readings exceeding 33°C during heat waves. The 0% market pricing reflects the current contract structure: with multiple discrete temperature bands available, no single range commands sufficient conviction to accumulate meaningful volume. This is standard for weather markets covering specific dates months in advance, where uncertainty remains genuinely distributed across several plausible outcomes rather than concentrated in one.

The key dependency for traders is the Observatory's publication schedule. The Hong Kong Meteorological Society maintains detailed climate records accessible via the Observatory's public database, which serves as the authoritative source. No scheduled announcements or policy changes are expected to influence June 2026 temperatures directly; traders should monitor seasonal forecasts from March onwards as the date approaches, when meteorological models gain predictive power and market probabilities typically begin concentrating around more probable ranges.

Methodology

We track Highest temperature in Hong Kong on June 1? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Is this market available outside the US?

Polymarket UK 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 Polymarket UK?

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

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket UK triggers a quick verification flow that finishes in minutes.

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.