Highest temperature in Hong Kong on August 4?

Platform comparison

Market context

Hong Kong’s hottest reading on 4 August will be set by the Hong Kong Observatory’s final “Absolute Daily Max” for the day, so the market is really about whether the city finishes in the upper end of its usual early-August range or gets nudged higher by a brief hot spell. Current crowd pricing at 0% for YES leaves the market notably misaligned with the broader weather setup, because August in Hong Kong is typically hot and humid, with daytime highs commonly around 30°C and occasional spikes above that when cloud cover breaks. [2][11]

Comparable cases suggest the main question is not whether Hong Kong can reach the low 30s — it often can — but whether rain, maritime airflow, or a cooler onshore pattern trims the day back into the 29–30°C band. Recent reporting also shows how quickly the city can swing on summer heat: Hong Kong has already logged a hottest day of the year in 2026, with the Observatory and local outlets reporting peaks above 34°C in the city and higher values inland, underscoring that readings can move materially above the monthly norm when conditions line up. [6][10][19]

For traders, the key catalysts are the Observatory’s short-range forecast updates, any rain or thunderstorm warnings, and the timing of afternoon sunshine versus cloud cover, because these drive the day’s maximum more than overnight conditions. The market will not resolve until the Daily Extract is published, and the HKO’s regional readings page and text forecast are the practical sources to watch for whether temperatures trend towards 29°C, 30°C, or a hotter surprise. [4][9][17]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Sports-specific comparison page for Highest temperature in Hong Kong on August 4?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Are prediction markets better than sports betting?

Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

Can I bet on individual matches?

Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.

Which sports markets are available?

Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.

Can I import form data and lineups?

This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.