Highest temperature in Hong Kong on August 2?

Platform comparison

Market context

Hong Kong’s afternoon maximum on 2 August will be set by the Hong Kong Observatory’s final “Absolute Daily Max” reading, and the market is currently leaning very heavily towards a cool outcome, with the crowd pricing **0%** for a broad yes-style interpretation. The live book on Polymarket has the front of the curve clustered around **27°C** and **28°C**, which fits the Observatory’s own forecast of a **28°C** daily maximum under persistent cloud, showers and thunderstorms.[1][3]

That is notably below the long-run August norm. The Hong Kong Observatory’s climatology puts 2 August’s mean maximum at **31.5°C**, while the city’s broader August climate is typically hot and humid; in other words, a forecast in the high 20s would be a meaningful suppression versus average summer conditions.[5][14] For comparison, August is normally one of Hong Kong’s hottest months, and the city has recorded severe summer heat in recent years, which is why a sub-30°C maximum would sit on the cooler side of the historical distribution.[2][13]

For traders, the key catalyst is the near-term weather evolution rather than any political calendar-style trigger: the Hong Kong Observatory forecast, the timing of showers and thunderstorms, and whether cloud breaks allow enough solar heating to push the final maximum from 27°C to 28°C or above.[1][3] The settlement source is the Observatory’s published daily extract, and the market rules note that later revisions to the initially published data will not count, so the important watchpoint is the first finalised release rather than any subsequent adjustment.[1][16]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Hong Kong on August 2? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.