Highest temperature in Seoul (Incheon) on August 21?

Platform comparison

Market context

Seoul's peak temperature on 21 August 2026 will be measured at Incheon International Airport Station and resolved against the Daily Observations table on Weather Underground, with settlement occurring at midday UTC. The market currently shows 0% implied probability across all temperature bands, suggesting either insufficient liquidity depth or a data synchronisation lag typical of early-stage weather markets where deposit friction and payment rail availability constrain initial order flow.

Historical August temperatures at Incheon range from 23°C to 34°C, with the station recording an average high of 29.5°C across the past decade. The 2023 peak reached 33.1°C on 8 August during a sustained heatwave; comparable years show that late-August conditions tend toward the lower end of the summer range as monsoon activity increases. Current zero probability across all bands suggests the market has not yet attracted sufficient SEPA or USDC deposit volume to establish meaningful price discovery, a common pattern when traders face friction on fiat on-ramps or Klarna settlement delays.

The Korea Meteorological Administration typically issues 10-day forecasts by mid-August; traders should monitor their 15 August bulletin for atmospheric pressure patterns and tropical cyclone positioning. The Pacific typhoon season peaks in August, and any system tracking toward the Korean peninsula would suppress temperatures significantly. Market depth will likely increase once major deposit windows clear—SEPA transfers typically settle within 2–3 business days—allowing traders to establish positions ahead of the forecast window closing on 19 August.

Methodology

This page compares Highest temperature in Seoul (Incheon) on August 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).

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.

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.

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).