Highest temperature in Guangzhou on July 21?

Platform comparison

Market context

Guangzhou will experience peak summer heat on 21 July 2026, with the highest daily temperature recorded at Baiyun International Airport determining the settlement range. The city sits in southern China's subtropical zone, where July typically brings monsoon influence and humidity levels exceeding 70%, creating conditions that regularly push daytime maxima above 33°C. Historical data from Wunderground shows Guangzhou's July peaks have ranged from 35–38°C over the past decade, though extreme heat events occasionally breach 39°C.

The 0% crowd probability reflects either insufficient liquidity depth or early-stage market formation, common for niche weather contracts where deposit friction and withdrawal rails remain underdeveloped. Traders using SEPA transfers or Klarna payment rails often face settlement delays that discourage participation in single-day weather markets; deeper book depth typically emerges once on-ramp efficiency improves and USDC settlement becomes standard. Comparable Guangzhou temperature markets from previous years show meaningful trading volume only after the resolution window opens within 48 hours, when real-time weather forecasts sharpen and traders can execute rapid positions.

Watch China Meteorological Administration forecasts released in early July 2026, which will signal whether monsoon patterns favour cooler conditions or heat dome formation. Tropical cyclone activity in the South China Sea during mid-July could suppress temperatures through cloud cover and rainfall, whilst high-pressure systems typically correlate with peaks of 36–37°C. Wunderground's historical data feed updates daily, allowing traders to calibrate positions against observed conditions as the settlement date approaches.

Methodology

This page compares Highest temperature in Guangzhou on July 21? with a focus on payment rails and deposit friction. Polymarket accepts USDC on Polygon only; Kalshi only ACH/Plaid (US only); Betfair card/SEPA in EU/UK; Manifold no deposit. Polymarket Klarna UK additionally offers Klarna and SOFORT as fiat on-ramps to USDC. Live odds reflect the Polymarket order book.

Resolution & payout

Settlement path determines payout latency. Polymarket settles on-chain (USDC, minutes). Broker frontends like Polymarket Klarna UK add Klarna/SOFORT as fiat withdrawal options with T+1 processing. Kalshi: USD via ACH (T+1 to T+3). Betfair: local currency via card/SEPA (T+1 to T+5).

FAQ

How does Klarna deposit work on Polymarket Klarna UK?

You enter the deposit amount in EUR/GBP, choose Klarna as the method, run through Klarna's standard authentication (Pay Later or Direct Bank Transfer), and Polymarket Klarna UK converts internally to USDC for the Polymarket order book. Processing: typically under 30 minutes.

What does SOFORT cost as a deposit method?

Polymarket Klarna UK charges no fees for SOFORT. The only cost is the internal FX spread (typically <1%) on EUR→USDC conversion. SOFORT itself has no end-user fees — the platform absorbs acquirer costs.

How fast is SEPA deposit?

SEPA Instant: under 10 seconds. SEPA Standard: 1-2 business days. Both accepted fee-free; the internal USDC conversion runs automatically once EUR lands in the platform account.

What's the minimum deposit?

10 EUR / 10 USD equivalent. No upper limit, but deposits over $1,500 lifetime volume trigger a quick KYC flow (typically 5-10 minutes).

Are payment details protected?

Yes. Card and bank details are never stored by Polymarket Klarna UK — they pass directly through PCI-DSS compliant payment service providers (Adyen, Stripe). Polymarket Klarna UK retains only transaction IDs and Klarna reference numbers for reconciliation.