Highest temperature in Hong Kong on July 13?

Platform comparison

Market context

Hong Kong’s official forecast for 13 July 2026 now projects a daily maximum of 32°C under partly cloudy skies with light rain possible, a shift that has pushed the crowd-implied probability for any outcome above 33°C to 0% in the last 24 hours[1]. This downward revision aligns with the Hong Kong Observatory’s seasonal outlook for July–September 2026, which anticipates normal to above-normal temperatures but notes that developing El Niño conditions may bring increased rainfall that suppresses peak heat[4].

Historical July data shows Hong Kong’s average high is 32°C, with extremes rarely exceeding 35°C even during strong El Niño years; the current market frontrunner at 33°C (42%) and the close rival at 32°C (39%) reflect this tight clustering around the long-term mean[1][5]. The 0% probability for higher ranges is consistent with past cases where mid-July rain events capped temperatures at or below 32°C, making a breakout above 33°C statistically unlikely without a sudden suppression of cloud cover.

Traders should monitor the Hong Kong Observatory’s “Daily Extract” for 13 July, which will publish the finalized “Absolute Daily Max (deg. C)” and serve as the sole resolution source[1]. Key catalysts include any real-time updates to the 13 July forecast before 12:00 UTC on settlement day, particularly announcements on significant rain probability or sudden changes in cloud cover, as these directly impact the likelihood of exceeding 32°C[9]. The market cannot resolve until the official data is published, so no early settlement is possible.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Today, 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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Today. 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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Today trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.