Highest temperature in Shenzhen on August 5?

Platform comparison

Market context

The event will be the highest temperature recorded at Shenzhen Bao’an International Airport on 5 August, with the market settling against the Wunderground history page for that station. On the current book, Polymarket shows 32°C as the leading outcome at 38%, while 31°C is 22% and 33°C is 20%, so the crowd is already clustering around the low-30s rather than the upper-20s or mid-30s.[10]

That distribution is broadly consistent with Shenzhen’s August climatology, where average highs are around 31-32°C and daily highs commonly sit in the upper 20s to low 30s Celsius. AccuWeather’s August 2026 forecast for Shenzhen Town has the 5 August high at 84°F and a monthly range extending up to 100°F later in the month, while WeatherSpark says August daily highs are typically around 89°F and rarely exceed 93°F, reinforcing that 32°C is a plausible centre of gravity rather than an outlier.[1][18][20] The 0% YES figure is therefore best read as a pricing artefact at the contract level, not as a literal statement that a 32°C-type print is impossible.

For traders, the main catalysts are the day-of forecast adjustments, any thunderstorms or rain bands that suppress the afternoon high, and whether Shenzhen’s coastal humidity allows a brief spike before cloud cover or showers arrive. Several forecast services point to a wet August in Shenzhen, with EaseWeather describing more than 20 rainy days and AccuWeather’s daily forecast showing unsettled conditions around 5 August, which matters because a single degree can shift the winning band in a tightly packed market.[2][1] There is no obvious sportsbook analogue for this exact station-specific contract, so the useful comparison is between the prediction market’s 31-33°C cluster and the meteorological consensus that sits close to that same band.[10][1][18]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.

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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.