Highest temperature in Hong Kong on July 9?

Platform comparison

Market context

The Hong Kong Observatory is expected to record a peak temperature on 9 July 2026, with the market currently pricing a 32°C hit at 38.5% despite the crowd-implied 0% probability for the specific "YES" outcome in this contract[1]. On Polymarket, this conditional token trades on USDC via the Polygon network, where the price reflects the on-chain consensus that a 32°C day is plausible but not guaranteed, contrasting sharply with the abstract 0% sentiment[4].

Historical July data frames this probability, as the average high for the month sits at 32°C, with daily highs typically ranging between 28°C and 32°C, while seasonal forecasts for July–September 2026 predict normal to above-normal temperatures[2][5]. The Observatory's seasonal outlook, influenced by the latest ENSO status, suggests a slightly higher chance of above-normal rainfall, yet the temperature trend remains upward, making a 32°C peak consistent with past years where daily highs reached 32°C or higher[2].

Traders should monitor the Hong Kong Observatory's 9-day weather forecast updates and the finalisation of the "Daily Extract" data, which will confirm the absolute daily maximum once published[7]. Recent regional forecasts indicate temperatures in south China's Hong Kong could drop to 13°C this weekend after peaking at 25°C, a volatility that traders must weigh against the seasonal trend of above-normal heat[6]. The resolution depends entirely on the "Absolute Daily Max (deg. C)" figure appearing in the official extract, a dependency that requires waiting for the data to be finalized before the market can settle[2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Hong Kong on July 9? 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 PolyGram, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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 PolyGram 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.