Highest temperature in London on August 12?

Platform comparison

Market context

London City Airport's weather station will record the highest temperature on 12 August 2026, with the market settling based on the Daily Observations table rather than summary figures. The 0% crowd probability suggests traders are either absent from this specific outcome band or pricing it as implausible relative to other temperature ranges available.

August temperatures at London City Airport typically peak between 20–28°C, with historical August averages around 23–24°C. The Met Office's 30-year climate normals show that readings above 30°C occur in roughly 15–20% of August days across London, whilst extremes above 32°C are rare but not unprecedented; the station recorded 40.3°C in July 2022 during the heatwave. Current market depth suggests limited liquidity in whichever temperature band this market occupies, a common pattern for granular weather outcomes where deposit friction via Klarna or SEPA transfers hasn't yet drawn sufficient retail participation to establish tight spreads.

Traders should monitor the UK Met Office's medium-range forecasts from early August 2026, particularly any Atlantic ridge patterns or continental high-pressure systems that could drive anomalous heat. The resolution hinges entirely on Wunderground's Daily Observations table from London City Airport, not alternative stations or summary data, making source verification critical before settlement. Book depth typically improves as the event date approaches and traders with established USDC or bank-linked accounts adjust positions based on updated meteorological models.

Methodology

This page compares Highest temperature in London on August 12? 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.

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.

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).