Seoul May 27 Temperature: Will It Hit 25°C?

Seoul’s weather on May 27 has traders split almost evenly. The market prices a 56% chance that the city’s highest temperature clears 25°C, leaving a meaningful 44% probability that it falls short. That gap is tight enough to call this genuinely contested, not a settled outcome.

The market question is straightforward: will Seoul’s daily high on May 27, 2026 reach 25°C or above? The YES contract trades at $0.56 and the NO side at $0.44. The market closes at 12:00 UTC on May 27. Total volume stands at $76,287, with $68,214 of that moving in the last 24 hours.

How the Seoul Temperature Contract Works

This contract resolves on a single meteorological measurement: Seoul’s highest recorded temperature on May 27, 2026. YES pays out if that peak reading is 25°C or above. NO pays out if the daily high lands at 24°C or any lower threshold, including 23°C, 22°C, and down to 15°C or below.

• YES (25°C or higher) trades at $0.56, implying a 56% probability.
• NO (any outcome below 25°C, from 24°C down to 15°C or lower) trades at $0.44, implying a 44% probability.

The NO outcome pays when Seoul’s peak temperature on May 27 stops below the 25°C threshold. Seoul’s daily high readings in late May typically cluster in the low-to-mid twenties. A persistent cool air mass from the north, overcast skies, or rain suppressing daytime heating would push the reading below 25°C and hand NO traders a win. The margin here is a single degree Celsius. That is thin enough for cloud cover alone to decide it.

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Momentum and Market Signals

The momentum composite across the 1-hour window shows no movement, with a trend score of 30.52. That flat signal reflects a market waiting on meteorological data rather than reacting to any new information. The driver here is the weather forecast for Seoul on May 27, not any policy announcement or data release from a regulatory body.

Volume tells a more interesting story. Total volume at $76,287 is thin by prediction market standards, well below $1 million. That means the $1,199,429 in liquidity dwarfs the actual trading activity. Thin volume markets like this one can reprice sharply when a fresh forecast arrives or when actual conditions on the day diverge from expectations. A single high-confidence weather update could move this contract several cents in either direction.

• The 1-hour price change is flat at 0.0%, consistent with a market anchored at its opening price of $0.56 since inception.
• The 24-hour change is unavailable, which suggests this contract launched recently with limited price discovery beyond the initial pricing.
• Liquidity at $1,199,429 is strong relative to volume, meaning large trades could execute without slippage, but few traders are actively repositioning.
• The 56/44 split reflects genuine meteorological uncertainty rather than a consensus lean toward either outcome.
• The trend score of 30.52 is subdued, confirming the market is in a holding pattern ahead of the resolution date.

Lines Analysis: Seoul on the Edge of Twenty-Five

Seoul’s late-May climatology supports the YES side as a slight favorite. Historically, Seoul sees its temperatures climb steadily through May, with daily highs in the final week of the month frequently reaching the mid-twenties. If the synoptic pattern in place through May 26 continues without disruption, 25°C is a reachable but not guaranteed target. The Korea Meteorological Administration’s short-range forecasts for the Seoul metropolitan area are the single most relevant data source for this contract. Any forecast showing a daytime high of 25°C or above strengthens the YES case materially.

The NO side has a clear path. Seoul in late May can see cool, overcast days, particularly when a trough of low pressure sits over the Korean Peninsula or when northerly winds draw cooler air southward from Manchuria. A forecast high of 23°C or 24°C on May 27 would not be unusual for this time of year. The difference between YES and NO is one degree. That is within the margin of forecast error for any 24-hour temperature outlook.

• Korea Meteorological Administration forecast for May 27: the directional signal that matters most for final pricing.
• Synoptic weather pattern over Northeast Asia on May 26 to 27: a ridge supports warming, a trough or low suppresses it.
• Actual Seoul temperature readings on May 26: a warm day on the 26th raises the baseline for the 27th.
• Cloud cover and precipitation forecasts for Seoul on May 27: overcast or rainy conditions cap daytime heating below 25°C.
• Regional temperature anomalies in South Korea for late May 2026: if the region is running above the seasonal average, YES probability rises.

The total volume of $76,287 is modest. The data currently favors YES at 56%, but this is a one-degree question resolved by a single thermometer reading. The Korea Meteorological Administration’s next forecast update is the event that will reprice this market before resolution.

Slight YES Lean, High Uncertainty

Seoul’s late-May climate puts 25°C within reach, but one degree of separation means weather noise alone can decide this market. The data leans YES, but not convincingly.

What the market says: At 56%, the market is pricing genuine uncertainty. This is not a settled outcome. Thin volume means a fresh Korea Meteorological Administration forecast could shift the price sharply before the May 27 resolution.

Key unknown: The Korea Meteorological Administration’s short-range temperature forecast for Seoul on May 27 is the single data point that will resolve this market. Any official forecast showing a daytime high at or above 25°C would push YES probability meaningfully higher.