Korea by month / May
Korea in May
Last checked: October 2026
Warm and green, before the summer rain. Great for walking the palaces and Han River parks.
- Season
- Spring
- Seoul high / low
- 24°C / 14°C
- Rain in Seoul
- 104 mm
- Don't miss
- Haeundae Sand Festival in Busan
Weather
| City | Average high | Average low | Rain |
|---|---|---|---|
| Seoul | 23.6°C (74°F) | 13.5°C (56°F) | 104 mm |
| Busan | 22°C (72°F) | 14.6°C (58°F) | 156 mm |
| Jeju | 22.1°C (72°F) | 15°C (59°F) | 96 mm |
Averages for 1991–2020 from the Korea Meteorological Administration. Check the forecast before you pack.
What to wear
T-shirts and a light layer for the evening.
What's on in May
- Haeundae Sand Festival in Busan (May 15–18 in 2026)
- Hwaseong Haenggung palace opens at night on Friday–Sunday (May–November 1 in 2026)
Good to know
- Early May has public holidays (May 1 and Children's Day on May 5), and domestic travel gets busy.
Sources
- Korea Meteorological Administration – climatological normals 1991–2020
- Events and seasonal sights: see the sources on each linked guide.
Plan the rest
- Before you go: the checklist
- Seoul, Busan, and Jeju guides