Highest temperature in London on August 7?

Platform comparison

Market context

The relevant real-world event is the **highest temperature recorded at London City Airport** on 7 August, with settlement depending on the *Weather Underground Daily Observations* table rather than the summary high/low box. That distinction matters because intraday spikes, brief sunny intervals or a late-afternoon burst can change the outcome even when the day still feels broadly mild; the market is therefore about the single top reading, not the general forecast. [2][4]

At a **0% YES** crowd price, the book is effectively saying the market sees almost no chance of a qualifying reading in the referenced Celsius band, which is far more extreme than London’s usual August profile. AccuWeather’s August outlook for London shows daily highs mostly in the high teens to upper 20s Celsius, while independent coverage on 7 August described a pleasant day around 26°C with low rain risk. Recent UK weather reporting has also highlighted heat returning in the broader region, but not necessarily enough to push London City Airport into a much hotter bracket. [1][4][9][12]

For traders, the main catalysts are **payment friction and fresh deposits**, not just meteorology: markets like this often deepen when users can move money quickly through Klarna, SEPA, or USDC rails, because those on-ramps reduce the delay between seeing a forecast and entering size. Book depth can therefore improve if there is a burst of funding activity ahead of the midday settlement window, especially once the day’s forecast and airport observations become clear; the practical dependency is the timing of the Weather Underground updates, which are the sole resolution source here. [2]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in London on August 7? 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).