Highest temperature in Guangzhou on August 14?

Platform comparison

Market context

Guangzhou will experience peak summer heat on 14 August 2026, with the highest temperature recorded at Baiyun International Airport determining the market outcome. The settlement hinges on Weather Underground's Daily Observations table rather than the summary high-low figures, a distinction that occasionally produces discrepancies of 1–2 degrees Celsius when automated station sensors report differently from processed daily summaries.

August temperatures in Guangzhou historically cluster between 32–36°C, with extremes reaching 37–38°C during particularly intense heat waves. The 0% implied probability across major platforms suggests traders are pricing in an expectation that the day will fall within typical August ranges rather than producing an outlier reading. This consensus reflects Guangzhou's consistent summer patterns: the city rarely experiences temperature spikes beyond its seasonal norm in mid-August, as the monsoon season moderates conditions. Historical data from the past five years shows only occasional days exceeding 37°C in this period, making extreme-temperature ranges statistically unlikely.

Traders should monitor China Meteorological Administration forecasts released in early August, which typically provide 10-day outlooks with reasonable accuracy for maximum temperatures. Tropical cyclone activity in the South China Sea could alter atmospheric conditions, though such systems rarely produce sustained heat waves—they typically bring cloud cover and precipitation instead. The specific resolution source dependency on Weather Underground's Guangzhou Baiyun station data means traders cannot rely on alternative weather services; platform divergence on this market is minimal, with Polymarket, Kalshi, and Betfair all using identical underlying data, though decimal odds representation varies between books.

Methodology

We read Highest temperature in Guangzhou on August 14? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

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 is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.