Highest temperature in Shenzhen on August 1?

Platform comparison

Market context

Shenzhen’s hottest reading on 1 August will be the key number for this market, with settlement tied to the maximum temperature logged at Shenzhen Bao’an International Airport Station on that calendar day. On broad climate patterns, August is normally Shenzhen’s hottest stretch, with typical daytime highs around 32°C to 32.2°C and monthly record highs cited between 38°C and 40°C in historical climate summaries, so the contract is really about whether the airport tops its usual low-30s range rather than a broad seasonal swing.[4][7][16]

That helps explain why the crowd’s 0% YES looks more like an artefact of timing or thin liquidity than a weather view: by morning UTC, the market already sits inside the settlement day, yet the outcome still depends on later local-time heating, cloud cover and rain bands. Comparable August climatology shows Shenzhen daily highs often near 89°F to 93°F, with occasional spikes above 100°F in the wider historical record, while rainfall in the city’s wet season can cap the day’s maximum if showers arrive early.[1][6][8][19]

For traders comparing platforms, Polymarket typically shows an implied probability directly, whereas Kalshi, Betfair and Smarkets are usually read through decimal prices and, in exchange-style books, the fee load matters more to net edge than the headline number. The practical watchpoints are the local afternoon forecast, typhoon-related track changes in the South China coast, and any sudden shift in precipitation timing; Shenzhen sits in a monsoon-prone, typhoon-affected month, so even a hot start can be clipped if cloud or rain develops before the airport’s daily peak.[16][19]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Shenzhen 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, 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

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.

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. Kalshi Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.

Which platform supports Klarna/SOFORT?

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