Weather in Seoul for May 2025

May in Seoul, South Korea, is a delightful time as the city transitions from spring to early summer. At the beginning of the month, the weather is generally mild and pleasant. Daytime temperatures typically range from 12° to 20°, making it an ideal time for outdoor activities and sightseeing.

The mornings and evenings can be a bit cooler, so a light jacket or sweater is recommended.

As the month progresses, temperatures gradually rise. By mid-May, daytime temperatures often reach between 16° and 24°. The city starts to experience more sunshine, and the blooming flowers and lush greenery create a picturesque setting.

Rainfall is relatively low during this period, with occasional light showers that do not usually disrupt plans.

Towards the end of May, the weather becomes warmer, with daytime temperatures ranging from 18° to 27°. Humidity levels start to increase, hinting at the approaching summer. Evenings remain comfortable, although lighter clothing becomes more suitable for daytime activities.

The increased warmth and longer daylight hours provide ample opportunities to explore Seoul's vibrant neighborhoods, parks, and cultural sites.

Overall, May in Seoul offers a wonderful blend of mild to warm weather, making it one of the best times to visit the city. Whether you're strolling along the Han River, visiting historical palaces, or enjoying the local cuisine, the pleasant weather enhances the experience.