Highest temperature in Hong Kong on July 2?

Platform comparison

Market context

Hong Kong is set to record its highest temperature on 2 July 2026, a metric that will determine the outcome of a prediction market where the crowd currently assigns zero per cent probability to any “yes” resolution. This real-world event hinges on the Hong Kong Observatory’s finalised daily extract, which will publish the absolute maximum temperature in degrees Celsius to one decimal place. The market remains unresolved until this official data is released, meaning no settlement can occur before the relevant climate authority confirms the figure.

Historical July data frames this zero-implied probability as a conservative stance, given that July 2026 is forecast to be normal to above-normal in temperature across Hong Kong[1]. AccuWeather projects daily highs between 86° and 96°F (30°–35.6°C), with an average high of 89°F (31.7°C)[2]. Recent records support this trend: Hong Kong hit 34.6°C (94.3°F) on its hottest day of 2026 so far, just weeks ago[9]. Such peaks suggest that a temperature exceeding typical thresholds is plausible, making the current crowd-implied odds of zero per cent appear divergent from analyst consensus on seasonal warmth.

Traders should monitor the Hong Kong Observatory’s daily extract release schedule, as delays in finalisation could postpone settlement indefinitely[4]. A key catalyst is the upcoming weekly weather update, which may signal shifts in heat intensity before 2 July[5]. Additionally, the ongoing ENSO status and multi-model consensus forecasts are critical dependencies, as they influence regional temperature anomalies[1][8]. Any announcement of extreme heat warnings or hail events—like the one issued alongside the 34.6°C record—could serve as a leading indicator for the day’s maximum[9]. These factors must be weighed against the current zero-implied probability to assess potential market divergence.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Hong Kong on July 2? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi vs Polymarket, which mirrors 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

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 Kalshi vs Polymarket. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi vs Polymarket 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.