Highest temperature in Hong Kong on July 12?

Platform comparison

Market context

Hong Kong is currently experiencing a cool, rainy spell with frequent precipitation expected through mid-July, directly suppressing the likelihood of extreme heat on 12 July 2026. The Hong Kong Observatory’s seasonal forecast for July–September 2026 predicts normal to above-normal temperatures overall, yet immediate weather outlooks for 10–19 July describe cool conditions with rain and windy weekends, contradicting the high-heat scenario implied by typical July averages [4][8]. This short-term deviation from the seasonal trend explains the crowd-implied 0% probability for any high-temperature outcome, as current atmospheric conditions favour cloud cover and precipitation over solar heating.

Historically, July in Hong Kong averages 32°C (90°F), with peak highs often reaching 34–35°C during clear, humid periods [3]. However, comparable cases from recent years show that when rain and cloud systems dominate early July, daily maximums frequently drop to 28–30°C, well below the thresholds required for this market to resolve positively. The current 0% probability aligns with these cooler, wetter precedents rather than the typical summer peak, reflecting the market’s sensitivity to immediate weather disruptions rather than long-term climate trends [4].

Traders should monitor the Hong Kong Observatory’s Daily Extract for 12 July, specifically the “Absolute Daily Max (deg. C)” once finalized, as the sole resolution source [1]. Key catalysts include any sudden shifts in the rain forecast or wind patterns between now and the 12:00 UTC settlement deadline, as even brief periods of clearing could alter the temperature reading. With rain expected to remain frequent through 19 July, the market leans heavily on the persistence of this cool, wet system as the primary determinant [8].

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 July 12? 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

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

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.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.