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Tomorrow, South Korea will experience spring rain nationwide, with heavy rainfall expected in Jeju and along the southern coast. Air quality levels will be poor in the capital and Chungcheong regions, advising caution for outdoor activities.

Spring Rain Forecast and Rainfall Tomorrow

Tomorrow (18th), South Korea is expected to experience spring rain across the country. The rain will commence early in the morning in Chungcheongnam-do Province and Jeju-do Island, spreading nationwide by late morning. Most of the rain will taper off by the afternoon. However, heavier rain is anticipated along the southern coast, with up to 30mm lasting into the night. On Jeju, rainfall could exceed 70mm through early Friday morning, requiring extra caution.

Ultrafine Dust and Temperature Outlook

Tomorrow will remain mostly cloudy across the country. Air quality levels are forecasted to be 'bad' in the capital area, Gangwon-do Province, and Chungcheong-do Provinces, so please take precautions when heading outdoors. Tomorrow's low temperatures will see Seoul at 6 degrees Celsius, Daejeon at 5 degrees, and Busan at 10 degrees. Afternoon highs will reach Seoul 11 degrees, while Daegu, Gwangju, and Busan will all top out at 13 degrees. Typical spring weather with large day-to-night temperature swings is expected to continue for the rest of the week, so please take care.

*Source: YouTube: Arirang News (2026-03-17)*

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