Highest temperature in Shenzhen on August 17?

Platform comparison

Market context

Shenzhen will experience peak summer heat on 17 August 2026, with the highest temperature recorded at Bao'an International Airport Station determining the settlement outcome. The market currently prices at 0% YES across all temperature bands, reflecting the settlement window's two-year horizon and the inherent difficulty in forecasting specific daily extremes so far in advance. On Polygon, traders are holding conditional tokens representing discrete temperature ranges in Celsius, denominated in USDC, though the absence of any YES probability suggests the market has yet to attract meaningful liquidity or conviction from participants.

Shenzhen's August climate is remarkably consistent year-on-year. Historical data from Bao'an Airport shows August highs typically cluster between 32–34°C, with extreme readings rarely exceeding 35°C. The city's coastal subtropical position and urban heat island effects create predictable thermal patterns; August 2023 recorded a peak of 33.8°C, whilst August 2024 peaked at 33.5°C. These narrow historical bands explain why traders may be hesitant to commit capital to specific temperature brackets two years forward—the range of plausible outcomes is genuinely tight, making any single band a poor expected value proposition at current pricing.

The resolution mechanism's reliance on Weather Underground's Daily Observations table rather than summary figures introduces a technical dependency worth monitoring. Traders should track Shenzhen's long-term climate trends and any significant infrastructure changes at Bao'an Airport that might affect local microclimate readings. Seasonal weather pattern forecasts from June 2026 onwards will provide the first material update to current pricing, though even then, daily temperature prediction beyond two weeks remains unreliable.

Methodology

This page reviews Highest temperature in Shenzhen on August 17? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.

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.