Highest temperature in Seoul on July 3?

Platform comparison

Market context

The underlying event is the highest temperature recorded at Incheon International Airport on 3 July 2026, measured in degrees Celsius. Historical data for Seoul in July shows average highs typically ranging from 25°C to 30°C, with midday peaks often reaching 30°C and humidity pushing the "feels like" temperature above 34°C[1][2]. The monsoon season (Jangma) usually spans late June to mid-July, bringing short but intense rain bursts that can temporarily lower temperatures, though nights remain warm due to lingering moisture[1][3]. Given that July is the wettest month with humidity above 80%, a 0% probability for the highest temperature falling in a specific low range aligns with the expectation that heat will persist despite rainfall, as sustained heat often peaks later in July or August[1][3].

Traders should monitor the Korea Meteorological Administration’s hourly heatwave forecasts and Wunderground’s real-time updates for Incheon, as clear skies and light southern winds can rapidly elevate temperatures to 27°C–28°C with a "feels like" of 28°C[5]. The Sinchon Water Gun Festival in late July may influence local humidity and crowd behaviour, but the immediate catalyst is the weather pattern on 3 July itself, where clear conditions and low precipitation probability (0%) suggest unmitigated heating[1][5]. Recent climate data indicates 30 July as the day with the highest average temperature in South Korea at 31.9°C, implying that early July could see slightly lower but still significant peaks, making temperature thresholds above 30°C plausible[7]. The market’s book depth is driven by funding flows from payment on-ramps like Klarna and SEPA, where deposit fees and withdrawal rails directly impact trader participation and liquidity in this weather-linked prediction.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Seoul on July 3? 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.

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.

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).

How do withdrawals work?

Identical methods in reverse. SEPA withdrawal: T+1 (standard) or under 10 seconds (SEPA Instant). Klarna withdrawals process via bank-account refund. USDC withdrawal to external wallet: Polygon gas cost (typically $0.01).

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.