Highest temperature in Seoul on June 16?

Platform comparison

Active sub-markets

Market context

Seoul's June weather sits at the threshold between late spring and early summer, with daily highs typically ranging from 24–28°C. The 16th falls within a transitional period when monsoon systems begin to influence the Korean peninsula, introducing variability in temperature outcomes. Incheon International Airport, the official measurement station for this market, sits on reclaimed land west of Seoul proper, which can moderate extremes compared to inland urban areas. Historical data shows June 16th has recorded highs between 22°C and 31°C over recent decades, though extreme heat events above 32°C remain uncommon for this specific date.

The 0% crowd probability reflects either low trading volume or genuine uncertainty about whether conditions will breach the highest temperature bracket on offer. June in Korea typically sees increased cloud cover and precipitation as the rainy season approaches, which suppresses peak temperatures. However, early heat waves do occur; the Korea Meteorological Administration has documented instances where high-pressure systems push temperatures above seasonal norms by 3–5°C. Traders should monitor the KMA's 10-day forecast issued around early June, which will clarify whether a blocking anticyclone is positioned to drive sustained heat into mid-month.

Liquidity constraints on this market may explain the absent probability mass. Deposit friction through Klarna or SEPA transfers can delay capital deployment, whilst withdrawal rails to fiat remain slower than stablecoin settlement. Traders with conviction on Seoul's June 16th temperature would need to front capital weeks in advance, creating a timing mismatch between forecast confidence and market entry. Book depth typically improves only when near-term catalysts sharpen, making early positions in low-probability outcomes illiquid until settlement approaches.

Methodology

We track Highest temperature in Seoul on June 16? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?

Polymarket Klarna UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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 Klarna UK?

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

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Klarna 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.