Highest temperature in Seoul on July 14?

Platform comparison

Market context

The market is pricing the peak temperature at Incheon International Airport on 14 July 2026 at zero probability for any single range, reflecting the difficulty of pinpointing a specific outcome more than eighteen months in advance. Seoul's July climate is remarkably consistent: the city experiences monsoon season during this period, with daily highs typically ranging between 28–32°C, though heat waves can push readings above 35°C. Historical records show that extreme heat events in mid-July occur roughly once every five to seven years, whilst cooler, rain-affected days occasionally dip below 26°C. The 0% crowd probability suggests traders are either awaiting range definitions or treating this as a placeholder market pending settlement mechanics clarification.

Seasonal forecasting skill deteriorates sharply beyond two weeks, making long-range temperature predictions unreliable. However, broader climate patterns—including sea surface temperatures in the Western Pacific, the East Asian summer monsoon intensity, and any developing El Niño or La Niña conditions—will become meaningful signals as July 2026 approaches. South Korea's Meteorological Administration publishes monthly outlooks three to four weeks ahead, offering the most actionable guidance closer to the settlement date. Traders should monitor whether spring 2026 shows anomalous warming trends or shifts in monsoon timing, both of which correlate with July heat extremes. The current flat pricing suggests the market awaits either clearer range buckets or sufficient temporal proximity to seasonal forecasts before meaningful positions emerge.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.