Highest temperature in Hong Kong on June 16?

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Market context

The Hong Kong Observatory will record the highest temperature on 16 June 2026 in degrees Celsius, with settlement depending on the published daily maximum once the data becomes available through their official climate records. The crowd has assigned zero probability to this event occurring, suggesting either extreme confidence in a specific outcome or insufficient liquidity to establish meaningful odds.

Hong Kong's June temperatures are historically stable and predictable. The territory experiences early monsoon conditions during mid-June, with daily maxima typically ranging between 29°C and 33°C. The 30-year climate normal for mid-June sits around 31°C, though extremes have occasionally pushed toward 35°C during particularly intense heat waves. The zero probability reading reflects either the market's certainty about which temperature band will resolve, or a structural issue with how the range brackets are calibrated against historical variance.

Traders should monitor the Hong Kong Observatory's seasonal forecasts released in May 2026, which typically indicate whether the monsoon onset will bring cooler, wetter conditions or delayed heat. El Niño or La Niña patterns developing through early 2026 could shift June temperatures materially. The settlement window closes at noon UTC on 16 June, but the Observatory typically publishes daily maxima within 24 hours, meaning final resolution may extend into 17 June depending on data processing schedules. Any significant tropical system approaching the region in mid-June would be the primary catalyst for temperature deviation from the 30-year mean.

Methodology

We track Highest temperature in Hong Kong on June 16? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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

Where can I trade this market with the lowest fees?

On Who Will Win 2026, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Who Will Win 2026 is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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 Who Will Win 2026?

Zero. Who Will Win 2026 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.