Highest temperature in Hong Kong on June 22?

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Market context

Hong Kong’s highest temperature on 22 June will be set by the Hong Kong Observatory’s final daily extract, so the event is driven by the official one-decimal Celsius maximum rather than any private forecast or local station reading. The Observatory was already warning of very hot weather on 22 June, which matters because a hot morning can still translate into an even higher afternoon peak before the settlement window closes at noon UTC.[9][4]

The crowd’s 0% YES implies the market is trading as if a qualifying high is effectively impossible, but that is hard to square with the broader climate backdrop. The Observatory’s June–August 2026 seasonal outlook says Hong Kong is expected to be *above-normal* temperature, while June monthly forecast pages from commercial weather services show daily highs clustered around 88–92°F, or roughly 31–33°C.[1][2] Recent comparable heat events in Hong Kong have already pushed readings into the mid-30s°C, including a 34.6°C hottest day so far reported this month and a 34°C summer-solstice reading, so a 0% price looks more like an accessibility or frictions signal than a pure weather view.[6][8]

For traders, the main catalysts are the Observatory’s day-of warnings, the afternoon maximum itself, and the later publication of the final Daily Extract that confirms the “Absolute Daily Max”. Because the source is official and public, there is no dispute over measurement once the extract is finalised, but there is still timing risk around when the daily record is published after the event.[4][9] On access, German GlüStV rules can restrict participation from German residents even where the market is otherwise visible, US CFTC reach can also matter for US-facing activity, and “no-KYC up to $1,500” generally means a user may be able to trade within that cap without identity verification, though withdrawal, limits, and jurisdictional screening can still apply.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Hong Kong on June 22? 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 Polymarket KYC UK — 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 Polymarket KYC 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 KYC 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 KYC UK?

Zero. Polymarket KYC 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 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.