Lowest temperature in Seoul on May 28?

The market resolves on May 28, 2026, after the May 28 trading day concludes in Seoul. Resolution is determined by the actual lowest temperature recorded in Seoul on that date, measured against the specific temperature thresholds defined in each contract. Official meteorological data from recognized weather stations in Seoul serves as the reference source. Once the day passes and final temperature data is confirmed, each outcome contract settles to either 1 (yes) or 0 (no) based on whether the actual low temperature matched the contract's specified threshold. Traders holding winning contracts receive their payout automatically.

Several factors could shift market odds for Seoul's May 28 low temperature. Major weather pattern changes, such as the arrival of cold fronts or high-pressure systems, typically trigger significant repricing. Updated seasonal forecasts from meteorological agencies and extended-range weather models influence trader expectations. Anomalous atmospheric conditions—volcanic activity, solar cycles, or unusual ocean temperatures—can alter regional climate patterns. Real-time weather data releases and radar observations closer to May 28 will refine market estimates. Historical temperature records for late May in Seoul provide a baseline; deviations from typical patterns spark trading activity. As the event date approaches, intraday weather updates and final model consensus will drive the most volatile price movements.