Highest temperature in Guangzhou on August 1?

Platform comparison

Market context

Guangzhou’s 1 August high is usually in the low-to-mid 30s Celsius, with August averages clustering around 33°C and typical highs near 32–33°C, while historical daily examples for 1 August have sat around 33.5°C. That makes a settlement in the **33°C–34°C** range the most natural base case for the Guangzhou Baiyun Airport reading on the day, especially as the market settles on the *highest* temperature recorded at the station rather than a citywide average.[1][5][18]

The current **0% YES** crowd price is best read as a market-specific quirk rather than a statement that a hot day is impossible: the underlying climate profile still points to a normal late-summer heat-and-humidity set-up, and August in Guangzhou has historically produced highs well above 35°C on some days.[4][5][20] On a platform-comparison basis, Polymarket-style markets quote probabilities directly, whereas Kalshi and Betfair-style books are easier to compare through decimal prices/odds; fees and access can diverge materially as well, with KYC and jurisdictional reach often more restrictive on regulated venues, so the same weather view can translate into different tradable prices once costs are included.

For catalysts, the key variables are not official announcements but the local weather pattern into and through the day: cloud cover, rainfall timing, and whether sea-breeze suppression or convection limits daytime heating. Guangzhou is in the middle of a hot, rainy season, so a morning rain band can cap the eventual airport maximum even if the air mass is otherwise warm; a clear, humid afternoon is more supportive of an upper-30s reading.[12][18][20] Traders should also watch the fact that the market’s reference is the airport station on Wunderground, so brief spikes at that site matter more than broader city forecasts.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Guangzhou on August 1? 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 Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees.

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

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.

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.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Kalshi Alternative UK 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.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Kalshi Alternative UK 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.