Weather in Seoul in May 2025
Average weather
Average temperature in Seoul in May
The temperature in May is +24°C on average, with a range between a maximum of +29°C during the day and a minimum of +6°C at night.
The average maximum temperature goes up 30% by the end of the month, compared with the beginning of the month, from +20°C to +27°C.
Is Seoul warm or cold in May?
Seoul is typically warm in May.
Maximum temperatures go up compared to the previous month from +17°C to +23°C. The minimum temperature also goes up from +7°C to +13°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how May is compared to other months in Seoul:
Climate in Seoul in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +17°C | +23°C | +27°C | ||||
| Min. temperature | ||||||
| -2°C | +5°C | +11°C | ||||
| Max. temperature | ||||||
| +30°C | +33°C | +35°C | ||||
| Rainfall | ||||||
| 62 mm | 86 mm | 121 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 60% | 64% | 70% | ||||
| Air pressure | ||||||
| 1014 HPa | 1010 HPa | 1007 HPa | ||||
| Sunny days | ||||||
| 11 | 11 | 7 | ||||
| Cloudy days | ||||||
| 9 | 10 | 12 | ||||
| Rainy days | ||||||
| 8 | 8 | 9 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May weather is still as good as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +17°C to +23°C during the day. Prepare for more rain. Average rainfall goes from 62 mm to 86 mm. Humidity rises from 60% to 64%. The average wind speed doesn’t change much during May, staying around 2 m/s. The amount of sunny days stay about the same, averaging 11 sunny days during the month.
June brings much the same weather, it remains good.
Wind
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Seoul is gradually increasing during May, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last May in Seoul?
Climate Change over Years
The climate in Seoul in May has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+15°C) and the highest in 2021 (+18°C). The driest year was 2001 with only 618 mm of rainfall, and the wettest year was 2020 with 1720 mm.
FAQ
Is May a good time to visit Seoul?
Can you sunbathe in Seoul in May?
Is Seoul rainy in May?
Is it sunny in Seoul in May?
Other cities in South Korea
Monthly weather in Seoul
Source of the data
For this page, we’ve looked at the typical weather in Seoul, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
