Seoul June 13 Low Temp: 17°C Leads at 55%

Seoul’s overnight low temperature for June 13 has become a live trading question with less than 24 hours to resolution. The 17°C outcome has surged to 55% implied probability, driven by a sharp momentum shift that accelerated through Wednesday. Here’s what the measurements are telling us: the market repriced dramatically, not incrementally.

The market question asks which temperature bracket represents Seoul’s lowest reading on June 13, with resolution set for 2026-06-13 at 12:00. The 17°C outcome trades at $0.55. The competing brackets span from 11°C or below up to 21°C or higher, with 16°C and 18°C as the closest flanking positions. Total volume sits at $4,618, with $4,219 of that arriving in the last 24 hours.

How the Seoul Temperature Contract Works

This contract resolves to whichever single temperature bracket matches Seoul’s official lowest reading on June 13. The Korea Meteorological Administration records and publishes daily temperature extremes for Seoul. Resolution depends on the official minimum, measured in whole degrees Celsius, falling within a specific bracket.

• 17°C (YES): Resolves YES if Seoul’s official June 13 minimum temperature is recorded as 17°C. Current price: $0.55, implied probability 55%.
• All other brackets (NO): Resolves to the correct alternative bracket. The closest competitors are 16°C and 18°C, each offering meaningful coverage of forecast uncertainty on either side.

The 16°C and 18°C brackets represent the most credible alternatives. For 17°C to miss, Seoul’s measured minimum would need to land one degree lower or higher than the market’s favored outcome. Seoul’s June overnight lows typically range between 16°C and 20°C during the mid-month period, making the adjacent brackets genuine threats rather than long shots.

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Momentum and Market Signals

The momentum composite here is unusually sharp for a weather micro-market. The 1-hour gain of 10.5%, combined with a 24-hour surge of 26.0% and a trend score of 68.87, points to a single directional catalyst: a weather model update or forecast consolidation that shifted probability mass toward 17°C overnight. The data doesn’t care about the politics, and in this case, it doesn’t care about trader sentiment either. Something moved.

Total volume of $4,618 is thin by most standards, and $4,219 arriving in 24 hours means this market essentially repriced in one session. Liquidity stands at $18,688, which is relatively deep for this volume level. That ratio matters: price can move sharply on even modest new data because the order book is not fully anchored by high-conviction capital. The market is pricing uncertainty, not science, and thin volume makes that uncertainty tradable.

• The 24-hour volume of $4,219 represents more than 91% of total traded volume, signaling a very recent surge in market activity tied to a probable forecast update.
• The 1-hour price change of +10.5% and 24-hour change of +26.0% together form the strongest momentum signal in this contract’s short history.
• Trend score of 68.87 confirms directional conviction, but not certainty. At 55%, the market still assigns 45% probability to every other bracket combined.
• Liquidity at $18,688 exceeds total volume, suggesting market makers have positioned ahead of resolution without heavy directional betting from the public.
• The 30-day price range ran from $0.26 to the current $0.55, meaning the market doubled in implied probability as the resolution date approached and forecast data matured.

Lines Analysis: Seoul’s June Low and the Case for Each Bracket

Seoul’s June climate profile supports the 17°C bracket as a reasonable central estimate. The Korean peninsula in mid-June sits in a transitional period between spring cool air and the onset of the East Asian monsoon. Overnight lows during this window frequently cluster in the 16°C to 19°C range. The market’s convergence on 17°C aligns with that climatological center of gravity, especially as short-range numerical weather prediction models typically sharpen within 24 hours of a forecast event.

The 16°C bracket captures the risk of a cooler-than-expected night, perhaps driven by residual continental air from the northwest or clearer skies allowing radiative cooling. The 18°C bracket covers the scenario where maritime moisture or increased cloud cover holds temperatures slightly warmer overnight. Both scenarios are meteorologically plausible and together represent a substantial chunk of the remaining 45% probability.

• Korea Meteorological Administration temperature data for June 13 will determine resolution. Any deviation from 17°C in either direction reprices all adjacent brackets immediately.
• Short-range weather model output for Seoul over the next 12 hours is the single most relevant data input. If models shift toward 16°C or 18°C, expect rapid price movement.
• Cloud cover and wind direction forecasts for Seoul overnight on June 12-13 directly influence minimum temperature outcomes. Clearer skies favor cooling toward 16°C.
• The monsoon front position matters. If the Changma front advances northward faster than expected, overnight humidity and cloud cover could hold minimums at 18°C or above.

The total volume of $4,618 is modest, but the liquidity structure suggests informed positioning rather than purely speculative noise. The data currently favors 17°C as the modal outcome, but the adjacent brackets each carry enough meteorological plausibility to make this a genuine three-way competition at resolution. The 55% probability is a forecast, not a certainty.

LINES VERDICT

SLIGHT EDGE TO SEVENTEEN

Seoul’s June climatology and the sharp late momentum both point toward 17°C as the most likely single bracket, but a 55% market implies real uncertainty across adjacent temperature outcomes.

What the market says: At 55% implied probability, the market treats 17°C as the modal forecast but acknowledges roughly even odds that Seoul’s actual minimum lands in a neighboring bracket. With resolution in less than 24 hours, any forecast model shift will reprice this contract quickly.

Key unknown: The Korea Meteorological Administration’s official minimum temperature reading for June 13 is the only data point that matters. Any short-range forecast update pointing to 16°C or 18°C in the next several hours would immediately reshape the probability distribution across all active brackets.

Seoul Temperature Market: Frequently Asked Questions

What does 55% probability mean for the 17°C outcome?

The 17°C bracket is the market’s single most likely outcome, but 55% means traders collectively assign a 45% chance the official minimum lands in any other bracket, including 16°C or 18°C.

What happens if Seoul’s low is 16°C instead?

The 17°C contract resolves worthless. The 16°C bracket pays out to holders of that position. Every bracket resolves independently based on the Korea Meteorological Administration’s official reading.

What event would most move prices before resolution?

A short-range weather model update showing Seoul’s overnight low consolidating toward 16°C or 18°C would trigger immediate repricing. Forecast model runs within 12 hours of the event carry the highest market-moving potential.

When does this market resolve?

Resolution is set for 2026-06-13 at 12:00. The Korea Meteorological Administration publishes Seoul’s daily temperature extremes, and the contract closes once the official minimum is confirmed.

Is $4,618 in total volume enough to trust the price signal?

Volume is thin. At this level, a single moderately sized trade can shift the price meaningfully. The $18,688 liquidity provides some buffering, but treat the 55% figure as a rough forecast range, not a precise probability.