Highest temperature in Hong Kong on June 7?

Platform comparison

Active sub-markets

Market context

Hong Kong's peak daily temperature on 7 June 2026 will be recorded by the Hong Kong Observatory and published in their Daily Extract climate database. The settlement window closes at noon UTC on that date, though the actual temperature reading may not be finalised until the following day depending on Observatory publication schedules. Resolution will depend on the "Absolute Daily Max" figure in degrees Celsius to one decimal place.

June in Hong Kong typically sees temperatures in the 28–32 °C range, with occasional peaks above 33 °C during heat waves or pre-monsoon conditions. Historical data from the Observatory shows that extreme June highs (above 35 °C) occur roughly once per decade, whilst readings below 26 °C are rare. The 0% crowd probability on Polymarket suggests traders are either awaiting more granular temperature bands to be published, or the market structure itself—common across Polymarket's weather offerings—may not yet reflect realistic settlement ranges. Kalshi and Smarkets typically offer tighter decimal-odds pricing on weather outcomes, whilst Betfair's exchange model allows lay positions that Polymarket's AMM does not, creating different incentive structures for traders hedging against specific temperature thresholds.

The key dependency is the Hong Kong Observatory's publication timeline. Tropical cyclone season formally begins 1 May, and any system tracking towards the region in early June could suppress temperatures significantly or, conversely, create pre-storm heat spikes. Traders should monitor the Observatory's ten-day forecast and any tropical cyclone watches issued by the Regional Specialized Meteorological Centre in the week prior to settlement. Fee structures vary materially: Polymarket charges 2% on both sides, whilst Kalshi's flat-fee model may favour high-volume weather traders, and Betfair's commission scales with liquidity.

Methodology

This page compares Highest temperature in Hong Kong on June 7? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to Polymarket Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Alternative UK, 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?

Polymarket Alternative 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.

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.

What does it cost to trade on Polymarket Alternative UK?

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

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.