Korea Meteorological Administration forecasts a maximum temperature of 17°C in Busan on April 4, with morning rain at 90% probability giving way to mostly cloudy conditions in the afternoon and a low around 10°C, aligning with seasonal early-spring norms where highs typically range 15–18°C amid variable high-pressure systems. Recent days featured mostly clear skies nationwide, daytime highs of 14–21°C, and sharp diurnal swings up to 15°C, driven by lingering cold air masses interacting with warming southerlies. Model consensus from KMA short- and medium-range guidance supports limited intensification potential, though traders monitor evening updates for any shifts in precipitation or frontal timing that could suppress peaks below 16°C. Historical April 4 analogs average 16.5°C at Busan station.