Highest temperature in Hong Kong on June 4?

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Market context

On 4 June 2026, the Hong Kong Observatory will record the day's peak temperature in Celsius, and this market prices the likelihood of that figure falling within specific ranges. The 0% crowd probability currently assigned suggests traders are either awaiting range options or treating this as a placeholder until the settlement window approaches. Resolution depends on the Observatory's published "Absolute Daily Max" figure in their Daily Extract database, measured to one decimal place—a precise threshold that eliminates ambiguity once the data appears.

Hong Kong's June temperatures cluster reliably between 28°C and 34°C based on three decades of Observatory records. Early June typically sits in the pre-monsoon transition, with highs averaging around 31–32°C. Extreme outliers—temperatures above 35°C or below 27°C on this date—occur infrequently enough that historical frequency distributions should anchor expectations. The 2023 and 2024 early-June readings provide recent comparable cases; neither produced unusual spikes, though individual daily variance remains material within the seasonal band.

Traders should monitor the Hong Kong Meteorological Society's seasonal forecasts released in May 2026, which often signal whether an anomalous heat event or cooler pattern is developing. The El Niño/La Niña status as of spring 2026 will influence broader Pacific circulation patterns affecting Hong Kong's weather. Once June begins, real-time atmospheric pressure systems and tropical cyclone activity in the South China Sea become the primary catalysts for daily temperature swings. The settlement window closes at 12:00 UTC on 4 June, allowing traders to react to morning Observatory updates before final conditional token redemption on Polygon.

Methodology

This page reviews Highest temperature in Hong Kong on June 4? 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 Legit? — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Legit?, 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 Legit? 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.

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, Polymarket Legit? triggers a quick verification flow that finishes in minutes.