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Jeju weather in May 2025
Expect 21°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Jeju in May. Check more long-term weather averages for Jeju in May before you book your next holiday to South Korea in 2025/2026.
- 2121°C max day temperature
- 7 hours of sunshine per day
- 1010 days with some rainfall
- 1313°C min night temperature
- 1414 hours of daylight per day
- 0No heat & humidity
- 140140 mm of monthly rainfall
- 99 (Very High) UV index
- 1616°C sea temperature
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Recommended for South Korea
The May weather guide for South Korea (Jeju) 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.
Metric (°C / mm) | Imperial (°F / inches)
How hot is it in Jeju in May?
Daytime temperatures usually reach 21°C in Jeju in May, falling to 13°C at night.
How sunny is it in Jeju in May?
There are normally 7 hours of bright sunshine each day in Jeju in May - that's 52% of daylight hours.
How warm is the sea around Jeju in May?
The average sea temperature around Jeju in May is 16°C.
Does it rain in Jeju in May?
There are usually 10 days with some rain in Jeju in May and the average monthly rainfall is 140mm.
Jeju May sunrise & sunset times
Browse the sunrise and sunset times for Jeju in May 2025. Select a month to view Jeju sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Thursday, 1st May 2025 | 05:46 | 19:17 |
Friday, 16th May 2025 | 05:33 | 19:28 |
Saturday, 31st May 2025 | 05:25 | 19:38 |
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