South Korea weather in May 2025

Expect 23°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in South Korea in May. Check more long-term weather averages for South Korea in May before you book your next holiday to South Korea in 2025/2026.

  • 23°C maximum daytime temperature in May in South Korea (Seoul)23
    23°C max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in May in South Korea (Seoul)8
    8 days with some rainfall
  • 12°C minimum night-time temperature in May in South Korea (Seoul)12
    12°C min night temperature
  • 14 hours of daylight per day in May in South Korea (Seoul)14
    14 hours of daylight per day
  • No heat & humidity in May in South Korea (Seoul)0
    No heat & humidity
  • 90 mm monthly rainfall in May in South Korea (Seoul)90
    90 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in South Korea (Seoul)8
    8 (Very High) UV index

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The May weather guide for South Korea (Seoul) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top South Korea destinations

Below are average maximum temperatures at popular countries, regions and places in South Korea in May. Select a holiday destination to see more weather parameters.

All South Korea destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in South Korea in May?

Daytime temperatures usually reach 23°C in Seoul, South Korea in May, falling to 12°C at night.

How sunny is it in South Korea in May?

There are normally 8 hours of bright sunshine each day in Seoul, South Korea in May - that's 57% of daylight hours.

Does it rain in South Korea in May?

There are usually 8 days with some rain in Seoul, South Korea in May and the average monthly rainfall is 90mm.

South Korea May sunrise & sunset times

Browse the sunrise and sunset times for South Korea in May 2025. Select a month to view South Korea sunrise and sunset times for the next 12 months. The South Korea sunrise and sunset times shown below are for Seoul.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:37 19:22
Friday, 16th May 2025 05:22 19:35
Saturday, 31st May 2025 05:13 19:47

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