Average weather for South Korea in May
It's warm in May in South Korea with an average temperature of 26°C. Temperatures this month range from a low of 23°C to a high of 29°C. At night, you can expect temperatures between 10°C and 16°C.
Start of May
The month of May starts in South Korea with warm temps, averaging around 24°C during the day and nights around 11°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid May
By mid-May, daytime temps rise to around 26°C, with nights around 14°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
Since it cools down at night, it’s a good idea to wear layers.
End of May
By the end of May, the average daytime temperature in South Korea is around 28°C, while nighttime temps are about 15°C. A shower might pop up, but overall, the weather will be dry and sunny.
Because temperatures drop in the evening, wearing layers is recommended.
In May, there is an average of 87 mm of precipitation, spread over 8 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
South Korea in May |
New York | ||
|---|---|---|---|
 Average temperature |
26°C | 22°C | |
 Max. temperature |
29°C | 28°C | |
| Min. temperature |
23°C | -5°C | |
 Total precipitation |
87 mm | 105 mm | |
| Rainy days |
8 days | 14 days | |
April
UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is May a good time to visit South Korea?
Looking for great weather? May is a good time to be in South Korea. The temperatures are nice, and there’s not too much rain.
Temperature records
With 36°C in 2014, South Korea reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 14°C in 2021. The extreme nighttime temperatures ranged from a lowest recorded value of 2°C to a highest value of 22°C.
Check out the climate of South Korea for all months and discover the best travel time
The climate in South Korea is based on weather data from Seoul. Other places, like Busan, might have different weather. You can check out all destinations in South Korea to get the full picture of the climate.
Daily Temperature in May in South Korea
This chart shows the average daily high and low temperatures in May for South Korea, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in May in South Korea
The chart below shows the average daily precipitation in May for South Korea, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for May, you can expect about 8 days of precipitation in South Korea.
Daily UV index in May in South Korea
This chart shows the average daily UV index in May in South Korea, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in May in South Korea over the years
This chart shows the average temperature in May in South Korea, measured in degrees Celsius, over the past few years.
Total precipitation in May in South Korea over the years
This chart shows the average precipitation in May in South Korea, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in May for South Korea
Click on any day in May to get detailed info about the usual weather on that day in South Korea. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in South Korea
Have you been to South Korea in May?
Share your weather experience in May in South Korea.
Average weather in South Korea by month
Click on a month below to see detailed weather info for South Korea. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of South Korea for all months at once
