🌦️ Weather & Packing

January is the coldest month and August the hottest. In Seoul the average low and high are −5.5°C / 2.1°C in January and 22.9°C / 30°C in August; Busan is milder in winter. Recent summers have been hotter than these averages, so check the forecast just before you leave.

Pack layers, a light rain layer and walking shoes. Early March typically calls for warmer outerwear than late September; April, May and October still need a check of morning and evening conditions. Use the forecast near departure to adjust the list.

Winter sightseeing is possible with warm clothing and indoor breaks. Seoul is colder than Busan in the official monthly climate table, but neither city’s average predicts your week. Pack an insulating coat, layers, gloves and a hat; shorten outdoor plans during severe cold.

Check KMA’s forecast for each city just before departure, then pack layers and rain protection for those dates.

Pack for your destination and season. Summer needs rain gear; winter needs warm layers.

Choose clothing for the weather and your activities. Carry a light layer for flexibility, and check dress requirements at religious or formal venues.

Yes—using a parasol for sun protection is acceptable in Korea. Seoul’s own heat guidance recommends parasols or hats outdoors.

Check your charger’s label against Korea’s 220 V, 60 Hz supply and check the plug shape. A plug adapter does not change voltage.

For LAX–Seoul, choose the flight whose Korean arrival time best fits a realistic sleep and daylight plan, rather than assuming one departure time prevents jet lag. Your usual sleep hours and ability to sleep onboard matter as much as the schedule.