Lowest temperature in Hong Kong on July 13?

Platform comparison

Market context

Hong Kong's July climate is characterised by high humidity and frequent rainfall during the southwest monsoon season. The lowest daily temperature on 13 July 2026 will be recorded by the Hong Kong Observatory at their official station and published to one decimal place in Celsius. Current crowd pricing across platforms shows 0% implied probability, suggesting traders expect the minimum temperature to fall outside the lowest range bracket offered by this market.

Historical July data from the Hong Kong Observatory reveals that daily minima during mid-July typically range between 24–27°C, with occasional dips to 23°C during particularly wet or cloudy spells. The absolute lowest July temperature on record is 17.3°C (July 1975), an outlier driven by an unusually cold front. Recent years show July minima clustering in the 25–26°C band. This historical pattern explains why the market's lowest temperature brackets carry minimal backing: the probability of a sub-23°C reading is genuinely low given seasonal norms.

Traders monitoring this market should track the Hong Kong Observatory's seasonal forecasts and any tropical cyclone alerts issued in early July 2026, as these are the primary catalysts that could suppress temperatures below typical ranges. The settlement window closes at 12:00 UTC on 13 July, but the Observatory typically publishes daily extrema within 24 hours of the observation date. Polymarket and Kalshi both list this market; Polymarket uses decimal odds whilst Kalshi's interface displays implied probability directly, though both charge similar taker fees. Resolution depends entirely on official Observatory data availability, which has historically been reliable but occasionally delayed during severe weather events.

Methodology

This page compares Lowest temperature in Hong Kong on July 13? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.