Highest temperature in Hong Kong on June 24?

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Market context

Hong Kong is experiencing very hot, sunny conditions today with a maximum temperature of 33°C, driven by an anticyclone aloft that is keeping the region extremely warm. This real-world heat surge has shifted the immediate outlook, as the Hong Kong Observatory confirms the current daily high sits well above the seasonal average, while the crowd-implied probability of 0% for the highest temperature range suggests the market is currently pricing in a specific, perhaps lower, bracket despite the visible heat.

Historically, June in Hong Kong sees average highs between 28°C and 32°C, with July and August typically being the hottest months at around 32°C. The current 33°C reading is an outlier that aligns with the seasonal forecast predicting above-normal temperatures for June-August 2026 due to an emerging El Niño event. Traders should note that while the 0% probability implies a specific range is unlikely, the persistent heat and the long-term warming trend mean the actual highest temperature could easily breach the 31°C threshold, making the current market pricing potentially misaligned with the climatic reality.

Key catalysts to watch include the weakening of the anticyclone and the arrival of upper-air disturbances expected to bring showers and thunderstorms later this week, which could temporarily lower temperatures. The Hong Kong Observatory’s 9-day forecast indicates a return to very hot conditions early next week, alongside the approach of Tropical Cyclone Mekkhala, which could disrupt the weather pattern. Traders must monitor the Daily Extract updates for the finalized "Absolute Daily Max" data, as the market resolution depends entirely on this official figure once published.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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 Prediction Today, 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?

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Do I need to KYC for this market?

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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.