About this Market

Recent KMA observations and medium-range guidance indicate Seoul will remain under a persistent high-pressure pattern with daytime highs several degrees above the July climatological average of ~29°C, supporting the tight clustering of market-implied odds around 27–29°C. Model consensus points to light winds, elevated humidity, and modest cloud cover or scattered showers that could cap the daily maximum near 28–29°C, while any clearing or delayed precipitation raises the chance of reaching 30°C or higher. The 1–2°C spread among leading outcomes reflects typical forecast uncertainty in peak temperature timing and local urban heat-island effects two days ahead of resolution, with updated short-range model runs from KMA and global ensembles expected to narrow the range before July 21.