Seoul Weather in May: Climate, Temperature & Travel Tips
Avg 18.6°C · 104mm rain — May is spring in Seoul.
- Avg high
- 23.5 °C
- Avg low
- 13.6 °C
- Avg
- 18.6 °C
- Precipitation
- 104 mm
Source: Open-Meteo Archive 2014–2023 · 10-year climate normals
Climate Overview
May in Seoul, South Korea brings spring conditions: average temperature 18.6°C, average high 23.5°C, average low 13.6°C. Monthly rainfall averages 104mm, making it a moderate-rainfall time of year.
Conditions are pleasant for most travel activities.
What to Pack
- Light layers (long sleeves + light jacket for evenings)
- Comfortable walking shoes
- A light rain jacket as backup
Best Things to Do
- Walking tours and city exploration
- Parks and outdoor cafes
- Seasonal food and night markets (where applicable)
Pros and Cons of Visiting in May
Pros:
- Pleasant temperatures for walking and outdoor sightseeing
- Shoulder season often means smaller crowds and lower prices
Cons:
- No major weather drawbacks for typical activities
Climate source: Open-Meteo Archive (2014–2023).
Colour = avg temperature · blue = cool · orange = warm
- 1 August 26.6°C
- 2 July 25.4°C
- 3 June 23.2°C
- 1 January -1.8°C
- 2 December 0.2°C
- 3 February 1.2°C
FAQ
01 What is the average temperature in Seoul in May? +
The average is 18.6°C, with a high of 24°C and a low of 14°C.
02 What is Seoul like to visit in May? +
It is spring in Seoul, which is ideal for outdoor exploration.
03 Does it rain often in Seoul during May? +
Average rainfall is 104mm, which is moderate.
04 What should I pack for Seoul in May? +
Light layers (long sleeves + light jacket for evenings); Comfortable walking shoes.
05 Is May a peak travel season for Seoul? +
It is closer to off-season, with more reasonable prices and fewer crowds.
06 Where does this climate data come from? +
Monthly averages computed from Open-Meteo Archive 2014–2023 daily observations.
- Sources
- Open-Meteo Archive 2014-2023
- Updated
- 2026-04-17