Highest temperature in Hong Kong on June 22?

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Market context

Hong Kong’s hottest reading on 22 June 2026 will be the number the Hong Kong Observatory records as the day’s **Absolute Daily Max** in degrees Celsius, and that final figure is what decides which temperature band this market settles into. In plain terms, a **YES** share pays out if the outcome matches the listed band for the day’s peak temperature, while a **NO** share does not.

The current crowd-implied probability of **0% YES** is best read against Hong Kong’s June climate and recent heat patterns. The Observatory says June in Hong Kong has a highest monthly mean maximum temperature of 32.4°C in its records, and its June–August 2026 seasonal forecast calls for **above-normal temperature**. That makes the market’s priced-out YES outcome notable, but not impossible, because a single day can still sit inside a hotter band even when the broader month is only moderately warm.[2][3]

Traders should watch the Observatory’s daily bulletins and the eventual “Daily Extract”, because this market cannot resolve until the official data are published. Short-term weather setup matters most: if a subtropical ridge or other heat-building pattern lingers, afternoon highs can move quickly towards the upper 30s, as recent Hong Kong heat reports have shown. The market description also says the resolution source is the Observatory’s final daily maximum, so any live forecast is secondary to the published official reading.[1][7][9]

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 Prediction Market 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

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'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 Prediction Market UK?

Zero. Prediction Market 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, Prediction Market 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.