Highest temperature in Shanghai on August 18?

Platform comparison

Market context

Shanghai's peak temperature on 18 August 2026 will be recorded at Pudong International Airport Station and resolved against Weather Underground's Daily Observations table, the primary source for settlement. The market currently shows 0% probability, reflecting either extreme confidence in a specific temperature band or minimal trading activity establishing price discovery. August in Shanghai typically sees daily highs between 32–35°C, with occasional peaks above 36°C during heat waves, though the precise range brackets will determine settlement.

Historical August records for Shanghai show considerable year-to-year variance. The city recorded 40.9°C in August 2013 during an exceptional heat event, whilst cooler Augusts have peaked near 31°C. Recent summers (2022–2024) have tracked toward the 33–35°C range for mid-August highs, suggesting the market's current zero probability may reflect trader positioning around a narrow band rather than genuine uncertainty about whether temperatures will fall within measurable bounds. Weather Underground's Daily Observations data has proven consistent for Shanghai airport station readings, establishing a reliable settlement baseline.

Traders should monitor China Meteorological Administration forecasts released in early August 2026, which typically provide 10-day outlooks with reasonable accuracy for maximum temperatures. Pacific typhoon activity patterns and the East Asian summer monsoon's intensity in late July will shape August conditions; any tropical cyclone approach to eastern China could suppress temperatures or create volatility in the forecast window. Deposit and withdrawal infrastructure—SEPA transfers, Klarna payment rails, and USDC on-chain settlement—will determine how quickly traders can capitalise on probability shifts as meteorological data firms up in the days preceding the resolution date.

Methodology

This page compares Highest temperature in Shanghai on August 18? 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).

UK Frequently Asked Questions

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.

Which payment methods are supported?

Klarna (Pay Now / Pay Later), SOFORT, SEPA bank transfer, credit card (Visa/Mastercard), Apple Pay, Google Pay, and direct USDC deposit on Polygon. Availability depends on your jurisdiction.

Can UK traders use Klarna to deposit on Polymarket?

Polymarket does not natively accept Klarna. To fund a Polymarket account from the UK, you must first purchase USDC via a crypto exchange (Coinbase UK, Kraken) or Revolut, then transfer to a Polygon-compatible wallet. Some third-party on-ramps (MoonPay, Transak) accept UK debit cards and may support Klarna buy-now-pay-later for crypto purchases.

What payment methods can UK users use for Polymarket?

UK traders typically use: (1) Coinbase UK or Kraken — buy USDC with GBP debit card or bank transfer; (2) Revolut — buy crypto and send to wallet; (3) MoonPay or Transak — Visa/Mastercard UK debit card directly to USDC on Polygon. Standard GBP-to-USDC conversion fees range from 0.5–2.5%.

How long do Polymarket withdrawals take for UK users?

Polymarket withdrawals to your Polygon wallet are instant (on-chain). Converting USDC back to GBP via Coinbase UK or Kraken typically takes 1–3 business days for bank transfer, or near-instant for Revolut. Polygon gas fees are minimal (<$0.01 per transaction).