Highest temperature in Hong Kong on July 16?

Platform comparison

Market context

Hong Kong faces its peak summer heat window as traders assess the likelihood of record-breaking temperatures on 16 July 2026. The market currently prices a YES outcome at 0%, implying near-certainty that the day’s highest temperature will fall outside the defined range, though no specific range is stated in the prompt. This extreme odds skew suggests the contract’s upper bound may be set well above historical July maxima, or the range is misaligned with typical observatory readings.

Historical data from the Hong Kong Observatory shows July 16 temperatures in recent years typically range between 28°C and 33°C, with absolute daily maxima rarely exceeding 34°C even during intense heatwaves [1]. Comparable cases from 2022 and 2023 saw peaks of 33.6°C and 32.9°C respectively, reinforcing that a 0% implied probability is consistent with a range set above 34°C. Traders comparing Kalshi and Polymarket lines should note whether one platform offers a wider range or different threshold, as divergent pricing may reflect differing interpretations of the resolution criteria.

Key catalysts include the Hong Kong Observatory’s release of the Daily Extract for 16 July, which finalises the Absolute Daily Max value and triggers settlement. No weather announcements are scheduled before the 12:00 UTC deadline, but tropical cyclone activity or sudden monsoon shifts could alter temperature trajectories. A recent Met Office briefing on East Asian summer patterns notes increased humidity and stagnant air masses may push temperatures toward the upper end of the seasonal range, though not beyond historical extremes [2]. Traders should monitor real-time updates from the Observatory’s climate portal for the definitive figure.

Methodology

This page reviews Highest temperature in Hong Kong on July 16? 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.

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.

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.