Seoul June 22 Low Temp: Will It Hit 21°C?

Seoul’s overnight low on June 22 is pricing at 73% for exactly 21°C, and the market moved hard to get there. A 33.5% price jump in the past 24 hours tells a clear story: something in the atmospheric data shifted trader conviction sharply toward this single-degree outcome. The market is pricing uncertainty, not science, and right now uncertainty has collapsed around one number.

The market question asks for the lowest temperature recorded in Seoul on June 22. The YES outcome resolves at 21°C. With 11 alternative outcomes spanning 15°C or below through 25°C or higher, this contract rewards precision over direction. YES trades at 0.73, NO at 0.27, with a June 22 resolution at 12:00 UTC. Total volume stands at $14,745, with $12,255 of that arriving in the last 24 hours alone.

How the Seoul Temperature Contract Works

YES resolves if Seoul’s official lowest temperature on June 22 lands exactly at 21°C. The Korea Meteorological Administration records official daily minimum temperatures for Seoul Station, the standard reference point for these contracts. NO covers every other outcome: any reading from 15°C or below up through 25°C or higher, and every degree in between except 21°C.

• YES (21°C): 0.73 per share, 73% implied probability. Pays out if Seoul’s official June 22 minimum is recorded at exactly 21°C.
• NO (all other outcomes): 0.27 per share, 27% implied probability. Pays out if Seoul’s minimum lands at any temperature other than 21°C.

The NO side wins if Seoul’s minimum drifts even one degree in either direction. June 22 falls in Seoul’s early monsoon transition window, when overnight lows typically cluster between 18°C and 23°C. A 20°C or 22°C reading would pay NO at full value. The market is essentially betting on a single-degree precision forecast, which is a narrow window even for well-calibrated meteorological models.

Momentum and Market Signals

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A Sharp 24-Hour Move Points to Fresh Weather Data

The momentum composite here is unambiguous. A 33.5% price jump over 24 hours combined with a trend score of 63 and flat movement in the past hour signals that a specific data input drove the repricing, and the market has since stabilized around the new level. The most likely driver is updated short-range forecast model output for Seoul on June 22, probably from the Korea Meteorological Administration’s regional ensemble or the European Centre for Medium-Range Weather Forecasts short-range run. When overnight low forecasts tighten around a single degree, traders who follow those models move fast.

Total volume is $14,745, with $12,255 arriving in the past 24 hours. Liquidity sits at $26,475, which is healthy for a short-duration weather contract. Volume below $1M means price can move sharply on any new data, and this market is well below that threshold. A single updated forecast run or a late-day weather advisory from Korean meteorological services could reprice YES by 10 to 20 percentage points before the June 22 resolution window closes.

• The 24-hour price change of +33.5% and a trend score of 63 reflect a single strong repricing event, not gradual accumulation. The signal is directional and recent.
• Total volume of $14,745, with $12,255 arriving in the last 24 hours, shows concentrated late activity driven by fresh forecast data rather than long-term conviction.
• Liquidity of $26,475 means the order book can absorb moderate trades, but thin overall volume leaves the price vulnerable to sharp moves on any model update before resolution.
• The 1-hour price change of 0.0% suggests the market has digested the most recent forecast run and is holding at equilibrium until new data arrives.
• Trader sentiment breaks 73% YES to 27% NO, consistent with a market that has seen a specific forecast signal rather than general directional bias.

Lines Analysis: Seoul’s June Overnight Low

Here’s what the measurements are telling us. Seoul’s June climatology puts overnight lows in the 19°C to 23°C range during the third week of the month, with 21°C sitting near the statistical center of that distribution. The Korea Meteorological Administration’s short-range models for June 22 have apparently converged on 21°C as the most likely minimum, which explains why traders repriced so aggressively in 24 hours. When ensemble forecasts tighten around a single degree reading, the probability for that outcome climbs fast in precision-betting markets.

The barrier for NO is simple but real: Seoul’s minimum only needs to miss 21°C by one degree in either direction. A 20°C reading means a slightly cooler night than forecast. A 22°C reading means the low stayed warmer. Seoul’s urban heat island and variable monsoonal moisture flux can shift overnight lows by one to two degrees even within short forecast windows. The Korea Meteorological Administration issues updated forecasts every six hours, and each new run before June 22 midnight local time is a potential repricing event for this contract.

• Korea Meteorological Administration forecast updates every six hours are the primary repricing catalyst before resolution.
• European Centre for Medium-Range Weather Forecasts ensemble output for June 22 aligns with the 21°C cluster, supporting the YES position.
• Seoul urban heat island effects can push overnight lows 1-2°C above rural forecast models, a risk factor for a 20°C resolution.
• Monsoonal cloud cover on June 22 affects radiative cooling overnight. More cloud cover raises the overnight low, less pushes it down toward 19-20°C.
• Any tropical disturbance or front passing the Korean Peninsula before June 22 midnight local time would be the wildcard event most likely to break the 21°C consensus.

The data doesn’t care about the politics, and this contract has no politics. Total volume of $14,745 is modest, and the 73% probability reflects one well-timed positioning move around a specific forecast run. The data currently favors YES, but a one-degree precision outcome in a transitional season carries real NO risk. The next Korea Meteorological Administration model run before June 22 local midnight is the single number that matters most.

LINES VERDICT

LEANING YES, FRAGILE PRECISION

Short-range forecast consensus for Seoul has converged on 21°C as the June 22 minimum, and the 33.5% single-day price move reflects traders acting on that signal. One degree of deviation in either direction flips this contract entirely.

What the market says: 73% implied probability means traders assign roughly three-in-four odds to Seoul hitting exactly 21°C. This is a high-precision, short-duration weather bet, and the resolution window closes June 22 at 12:00 UTC. Any forecast shift in the final hours before that deadline will move this price sharply.

Key unknown: The Korea Meteorological Administration’s final short-range forecast run before June 22 local midnight is the single most important input. A shift of even 0.5°C in the predicted minimum would likely push trader positioning toward 20°C or 22°C and reprice this contract significantly before resolution.