Highest temperature in Hong Kong on August 2?

Platform comparison

Market context

Hong Kong’s hottest reading for 2 August will be set by the Hong Kong Observatory’s final “Absolute Daily Max” entry, and the market is currently leaning heavily on the official forecast for a cooler, wet day rather than on any late-summer heat spike. At this point the crowd-implied 0% YES position suggests traders see little scope for an extreme upside surprise, with the observable event risk concentrated in whether showers and thunderstorms briefly clear enough for a sharper afternoon rise than forecast.[1][3][13]

The historical frame also points to why low single-digit temperature bands matter more than a broad “hot versus not” call. August in Hong Kong is normally very warm, but the climatological mean maximum for 2 August is 31.5°C, while recent August guides and climate summaries cluster daily highs around the low 30s with humidity and rain often limiting the day’s peak.[5][8][16] That means outcomes around 27–29°C are plausible in a cloudy, unsettled pattern, but anything near the seasonal norm would require conditions materially better than the present forecast.[1][5]

The main catalyst is the Hong Kong Observatory’s updated forecast and, later, the published Daily Extract, because the market resolves only from that final official data and ignores any revisions after initial publication.[1][13] Traders should watch for forecast updates on the Observatory site, especially changes to the expected maximum, shower coverage, and thunderstorm timing; those details are the only near-term dependency likely to move the range probabilities before the settlement window closes.[1][3]

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.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

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.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.