[Weather Tomorrow] Cool Early Autumn Morning... Daytime Highs Up to 31 Degrees

Strong Winds and Rough Seas Across the Country
Continued Swells Along the East, South, and Jeju Coastlines

Typical early autumn weather is expected on Wednesday, September 9. As South Korea remains on the edge of a high-pressure system, Busan, Ulsan, and the East Coast of North Gyeongsang Province will experience cloudy skies until dawn, while the central region and Jeju Island will see many clouds until midday before clearing up. The southern region is expected to remain clear throughout the day.

Travelers visiting Namsan in Seoul are enjoying their time under Seoul's clear autumn sky. Photo by Jo Yongjun

Rain is possible on the northern East Coast and northeastern mountainous areas of North Gyeongsang Province until dawn on September 9, and on the East Coast and mountainous areas of Gangwon Province until the morning of the same day. Expected precipitation amounts are 5–40mm for the mountainous areas of Gangwon, 5–20mm for the East Coast of Gangwon, and 5–10mm for the northern East Coast and northeastern mountainous areas of North Gyeongsang Province.

Morning low temperatures will range from 16 to 22 degrees Celsius, and daytime highs will range from 23 to 31 degrees Celsius, which is in line with the average temperatures for this time of year (morning lows of 16–21 degrees and highs of 25–28 degrees). By major city: Seoul and Daegu are forecast to see minimum temperatures of 19 degrees Celsius and maximum temperatures of 27 degrees, Incheon 20 and 27 degrees, Daejeon 18 and 26 degrees, Gwangju 20 and 30 degrees, Ulsan 21 and 26 degrees, and Busan 22 and 27 degrees.

Across the country, strong winds are expected with maximum instantaneous wind speeds around 55 km/h (up to 70 km/h in mountainous areas). In particular, the coastal areas of South Gyeongsang Province, the southern East Coast of North Gyeongsang Province, and eastern Jeju (from the afternoon of September 9) may see wind speeds exceeding 70 km/h, so caution is advised.

At sea, waves will be high. In the outer central West Sea, the far southern waters off Jeju, inner southeastern waters off Jeju, the far eastern South Sea, southern far offshore of the East Sea, and central offshore of the East Sea, strong winds of 30–65 km/h (9–19 m/s) are forecast, with waves expected to reach 1.5–4.0 meters. In the far southern waters off Jeju, the far eastern South Sea, the southern offshore of the East Sea, and the eastern and southern coastal waters off Jeju, waves will be especially high—reaching over 5 meters—from the afternoon and nighttime of September 9, respectively.

Strong winds and rough seas are also affecting the coastal waters off Busan, Ulsan, and the eastern waters off Geoje. Powerful swells are moving into the East Coast, southern coast of South Gyeongsang Province, and Jeju coastline, so people are advised to stay away from coastal areas.

This content was produced with the assistance of AI translation services.