Highest temperature in Hong Kong on June 8?

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Market context

The Hong Kong Observatory will record the highest temperature in degrees Celsius on 8 June 2026, with settlement depending on the official daily maximum reading published in their Daily Extract dataset. The crowd currently assigns zero probability to any outcome, suggesting either insufficient liquidity or genuine uncertainty about which temperature band will materialise on that specific date.

Hong Kong's June temperatures sit firmly in the early monsoon season, when the territory transitions toward its hottest months. Historical data shows daily maxima in early June typically range between 28°C and 32°C, with occasional excursions toward 33°C during heat waves. The 0% implied probability reflects the market's inability to forecast six months ahead with confidence rather than any structural impossibility—June heat in Hong Kong is meteorologically routine. Comparable years show considerable variance: some early Junes bring cooler, wetter conditions as the southwest monsoon establishes, whilst others feature pre-monsoon heat spikes. This natural volatility explains why the crowd has not coalesced around any single temperature band.

Traders should monitor seasonal forecasting updates from the Hong Kong Observatory and regional meteorological bodies as June 2026 approaches. The El Niño–Southern Oscillation phase and broader Pacific sea-surface temperature patterns, typically forecast by late 2025, will provide material guidance on whether that particular June leans toward cooler monsoon conditions or warmer-than-average extremes. Any significant atmospheric anomalies or heat dome formation in East Asia during May would signal heightened probability for the upper temperature ranges.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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, Who Will Win 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.