Highest temperature in Hong Kong on June 11?

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Market context

On 11 June 2026, the Hong Kong Observatory will record the day's maximum temperature in Celsius to one decimal place. Polymarket currently prices all temperature ranges at 0% implied probability, reflecting the market's nascent state roughly eighteen months before settlement. The contract will resolve based on the Observatory's published "Absolute Daily Max" figure once the Daily Extract data becomes available post-settlement window closure on 12 June 2026.

Hong Kong's June climate sits firmly within the pre-monsoon transition period, when the territory experiences rising heat and humidity ahead of the southwest monsoon onset. Historical June maxima cluster between 31–34°C, with extreme readings occasionally reaching 35°C or above during particularly intense heat episodes. The 1998 heat wave produced June peaks exceeding 36°C, though such occurrences remain statistically infrequent. Current market pricing suggests traders are awaiting sufficient historical anchoring and seasonal forecasting data before committing capital across the available temperature bands.

Traders monitoring this contract should track the Hong Kong Observatory's seasonal outlooks and any revisions to long-range climate forecasts as 2026 approaches. El Niño or La Niña conditions developing through late 2025 and early 2026 will materially influence June temperatures; the Observatory publishes seasonal climate outlooks quarterly. Additionally, any significant shifts in the North Pacific subtropical high-pressure system during May–June could drive temperatures toward the upper or lower end of the historical range. Resolution depends entirely on the Observatory's publication schedule, which typically releases daily climate data within days of the observation date.

Methodology

This page reviews Highest temperature in Hong Kong on June 11? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Kalshi UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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 Kalshi UK, 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?

Kalshi UK 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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Kalshi 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.