Highest temperature in Seoul on June 27?

Platform comparison

Active sub-markets

Market context

The underlying real-world event is the daily peak temperature recorded at Incheon International Airport on 27 June 2026, which will determine the settlement of a prediction market focused on Seoul’s highest heat. Historical data shows Seoul’s June temperatures typically range between 18°C and 29°C, with late June often hotter and more humid as the monsoon season approaches[1][2]. The current crowd-implied probability of 0% YES suggests traders believe the temperature will not exceed a specific threshold, likely aligned with the upper end of the historical average of 26.7°C for the warmest day in June[8]. Comparable cases from previous years indicate that while extreme heat spikes are possible, they are less common than moderate warmth, framing the low probability as a reflection of typical seasonal patterns rather than an anomaly.

Traders should monitor the Korea Meteorological Administration’s short-range forecasts and Wunderground’s daily updates for Incheon, as these are the official resolution sources[5]. Recent weather reports note that late June 2026 may see rising temperatures and increased humidity, with occasional rain showers preceding the monsoon peak[2][10]. A key catalyst is the timing of the monsoon onset, which typically spans June to July and can suppress peak temperatures through heavy rainfall[3]. Additionally, regulatory developments such as Germany’s GlüStV (Gaming State Treaty) and the US CFTC’s reach over unregulated prediction markets may affect accessibility, particularly for platforms offering “no-KYC up to $1,500” access, which allows traders to participate without identity verification but may face stricter compliance scrutiny under evolving tax and KYC frameworks.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Seoul on June 27? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Polymarket Tax UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does it cost to trade on Polymarket Tax UK?

Zero. Polymarket Tax UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Tax UK triggers a quick verification flow that finishes in minutes.

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.