Seoul Weather in May
In May, Seoul averages a high of 23°C (73°F) and a low of 13°C (55°F), from 49 years of daily records (1971–2026).
23°C
Average high
73°F
13°C
Average low
55°F
33°C
Record high
92°F · May 31, 2014
5°C
Record low
41°F · May 4, 1981
What May Is Like in Seoul
- 5 of the 10 warmest Mays on record in Seoul have come since 2012.
- May in Seoul has become 1.5°C (2.8°F) warmer on average: the 2012–2026 average against 1970–1989.
- The coldest May reading, 5°C (41°F) on May 4, 1981, has not been matched in 45 years.
- The warmest May in the record was 2012; the coldest was 1972.
At least 1 mm of rain falls on 28% of May days, and the month averages 96 mm in total.
Warmest: 2016 (25.6°C)Latest: 2026 (22.7°C)10-year averageLong-run average (23.0°C)
Look Up a Day in May
See the weather in Seoul on any May date, year by year.
Source: NOAA GHCN-Daily, Seoul City (1973–2025); Incheon (1971–2026). Averages cover 1971–2026. How we compute this