Highest temperature in Hong Kong on June 15?

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Market context

Hong Kong's daily maximum temperature on 15 June 2026 will be recorded by the Hong Kong Observatory and published in their Daily Extract dataset. The settlement hinges on the Observatory's official "Absolute Daily Max (deg. C)" figure to one decimal place, with resolution delayed until that data is finalised and publicly available. This creates a hard dependency: no early settlement is possible regardless of market activity.

Historical June temperatures in Hong Kong cluster between 28–32°C for daily maxima, though extremes have reached 35°C during heat waves. The 0% crowd probability suggests either extreme confidence in a specific range or insufficient liquidity to establish meaningful odds. For programmatic traders, this signals an opportunity to anchor positions using the Observatory's 30-year climate normals—June averages sit around 30.5°C—and cross-reference with seasonal monsoon patterns. The South China Sea's sea surface temperature in mid-June typically ranges 28–29°C, which moderates coastal peaks.

Traders should monitor the Hong Kong Observatory's seasonal forecasts (published monthly) and track the El Niño Southern Oscillation index, which influences regional heat patterns. The settlement window closes at 12:00 UTC on 15 June 2026, but actual data publication often lags by 24–48 hours. Conditional order logic should account for this lag: setting automated triggers on Observatory data release rather than market close time reduces execution risk. Recent patterns show June heat waves correlate with sustained westerly flow from mainland China; tracking upper-air wind forecasts from mid-May onwards provides early signal for extreme-temperature scenarios.

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Review UK, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does it cost to trade on Polymarket Review UK?

Zero. Polymarket Review UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Review UK triggers a quick verification flow that finishes in 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.