Highest temperature in Hong Kong on June 19?

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Market context

Hong Kong’s highest temperature for 19 June is being set by the day’s **HKO “Absolute Daily Max”**, so the key question is whether the city’s heat can get above the upper end of the Observatory’s published forecast range. The latest Hong Kong Observatory forecast for 19 June points to **26–31°C**, with “sunny intervals with showers” after early squally thunderstorms, which leaves the market’s relevant resolution band concentrated around the high-20s and low-30s.[2][5]

The 0% crowd-implied probability on the listed YES outcome looks aggressive when set against Hong Kong’s June climate and the Observatory’s seasonal guidance. HKO’s June-to-August outlook calls for **above-normal temperatures** this summer, while standard June weather in Hong Kong is already hot and humid, with typical daytime highs in the high 20s to low 30s.[3][4] In practical terms, that means a result in one of the warmer bands is materially more plausible than a full miss, especially if sunshine builds after the morning showers.[2][5]

The main trader catalysts are the final HKO daily extract and any late forecast adjustment before the settlement window closes, because the market will only resolve once the Observatory publishes the official record for the date.[7] For intraday context, the current forecast already shows a notable spread between early cloud and thunderstorms and a warmer afternoon clearing, so the day’s actual maximum will depend on how quickly the showers ease and whether convection rebuilds later.[2][5]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Hong Kong on June 19? 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 Champions League Prediction — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

Is this market available outside the US?

Champions League 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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Champions League Prediction 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.