Highest temperature in Hong Kong on June 22?

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Market context

Hong Kong’s heat on 22 June will be judged by the Hong Kong Observatory’s recorded maximum for the day, and the market will settle only once the Observatory publishes the final Daily Extract. With the contract already pricing a 0% YES chance, the market is effectively saying the threshold in question looks extremely unlikely to be hit from current information, rather than that the weather itself is expected to be cool.

For context, June in Hong Kong is normally hot, humid and rain-prone, with long-term guides putting daytime highs around 30°C and typical ranges near 26°C to 31°C, while the Observatory’s own June-August seasonal outlook points to above-normal temperatures for 2026. That means a final reading in the high-20s or low-30s would be broadly in family with the climatology, but the exact outcome will depend on whether cloud, rain or a brief heat spike pushes the daily maximum towards the upper end of the usual band.

The main catalysts are the Observatory’s short-range forecast, any rain bands or thunderstorm warnings, and whether hotter inland air or a more maritime, cloudy setup dominates through the day. The Observatory’s 9-day forecast had Hong Kong in a 27°C to 31°C range, which keeps the event live but also leaves room for a middling outcome if showers limit peak heating. Traders should watch the morning and midday updates from the Hong Kong Observatory, as the final figure can move quickly if sunshine breaks through or if early rain suppresses the high.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Sport Prediction, which mirrors the Polymarket order book directly.

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

Where can I trade this market with the lowest fees?

On Sport Prediction, 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?

Sport Prediction 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.

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.

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.