Highest temperature in Hong Kong on June 27?

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Market context

Hong Kong is entering its peak summer period on 27 June 2026, with the Hong Kong Observatory forecasting above-normal temperatures for the June–August season[3]. Historical data and long-term averages indicate daytime maximums typically reach 30°C to 32°C during this month, accompanied by high humidity and frequent rainfall[1][2]. The crowd-implied 0% probability for any specific temperature range appears inconsistent with these established climatic patterns, as June consistently delivers hot conditions with daily highs rarely dipping below 27°C[2][4]. Recent records, such as February 2026’s exceptionally warm month, further suggest a trend toward elevated temperatures in 2026[9].

Traders should monitor the Hong Kong Observatory’s finalised “Daily Extract” for the absolute daily maximum temperature, which will be published after the settlement window closes[3]. Key dependencies include real-time weather updates showing current highs of 32°C and sea surface temperatures of 26°C, which influence heat retention[4][5]. Any unexpected shifts in rainfall or cloud cover could alter the peak temperature, though the seasonal forecast strongly points to above-normal heat[3]. The resolution source is definitive only once the data is finalized in the official extract, meaning no early settlement is possible[3].

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.

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, Sport 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.