South Korea weather in May

Are you planning a trip to South Korea in May and wondering what kind of weather to expect? This page has all the details you need.

What is the weather like in South Korea in May?

Weather in South Korea varies in May, with temperatures ranging from pleasant to warm and precipitation ranging from moderate to high.

The average maximum temperatures vary from pleasant in Anmyeon at 19°C (66°F) to warm in Daegu at 26°C (79°F).

Precipitation in May varies from moderate rainfall in Donghae with an average of 77mm (3 inches) to high rainfall in Yeosu with 144mm (5.7 inches). It is also generally a sunny time of year with an average of 225 hours of sunshine in Seoul during the entire month.

For more details on the yearly weather and climate conditions, visit our South Korea climate page. To learn more about the weather conditions in specific areas of South Korea in May, check out the map below.

Where to go in South Korea in May

Find the average weather conditions in May for the most popular destinations in South Korea on the map below. Click on a destination dot for more detailed information.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

Popular destinations in South Korea

What is the weather like in May for the 5 most popular destinations in South Korea?

Average weather in Seoul

In May Seoul generally has high temperatures with maximum daytime temperatures around 24°C (75°F), minimum nighttime temperatures around 12°C (54°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

Seoul
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   April April
<<  
19°C / 65°F 
6°C / 43°F 
208 hours 
74mm / 2.9" 
8 days 
24°C / 75°F 
12°C / 54°F 
225 hours 
99mm / 3.9" 
8 days 
June   >> June
>>  
28°C / 82°F 
18°C / 64°F 
188 hours 
141mm / 5.6" 
10 days 
Climate in Seoul

Average weather in Busan

In May Busan generally has pleasant temperatures with maximum daytime temperatures around 22°C (71°F), minimum nighttime temperatures around 15°C (58°F) and high monthly rainfall. So on average the conditions are pleasant that month.

Busan
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   April April
<<  
18°C / 64°F 
10°C / 50°F 
210 hours 
123mm / 4.8" 
10 days 
22°C / 71°F 
15°C / 58°F 
227 hours 
123mm / 4.9" 
9 days 
June   >> June
>>  
24°C / 76°F 
18°C / 65°F 
179 hours 
178mm / 7" 
11 days 
Climate in Busan

Average weather in Jeju

In May Jeju generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 15°C (59°F) and high monthly rainfall. So on average the conditions are pleasant that month.

Jeju
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   April April
<<  
16°C / 62°F 
11°C / 52°F 
196 hours 
109mm / 4.3" 
12 days 
20°C / 68°F 
15°C / 59°F 
211 hours 
111mm / 4.4" 
11 days 
June   >> June
>>  
23°C / 74°F 
19°C / 66°F 
170 hours 
203mm / 8" 
13 days 
Climate in Jeju

Average weather in Seogwipo

In May Seogwipo generally has high temperatures with maximum daytime temperatures around 22°C (72°F), minimum nighttime temperatures around 15°C (59°F) and high monthly rainfall. So on average the conditions are pleasant that month.

Seogwipo
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   April April
<<  
18°C / 64°F 
10°C / 51°F 
190 hours 
127mm / 5" 
12 days 
22°C / 72°F 
15°C / 59°F 
198 hours 
134mm / 5.3" 
11 days 
June   >> June
>>  
25°C / 77°F 
19°C / 66°F 
145 hours 
243mm / 9.6" 
13 days 
Climate in Seogwipo

Average weather in Incheon

In May Incheon generally has pleasant temperatures with maximum daytime temperatures around 21°C (70°F), minimum nighttime temperatures around 13°C (55°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

Incheon
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   April April
<<  
16°C / 60°F 
7°C / 45°F 
222 hours 
73mm / 2.9" 
8 days 
21°C / 70°F 
13°C / 55°F 
242 hours 
98mm / 3.8" 
8 days 
June   >> June
>>  
25°C / 77°F 
18°C / 64°F 
215 hours 
139mm / 5.5" 
9 days 
Climate in Incheon

Is your destination not in the list? Have a look at other destinations in South Korea.

Is May the best time to go to South Korea?

In our opinion May is one of the best times to visit South Korea with commonly perfect weather in Seoul. However, the weather conditions may vary depending on your destination.

On average the best time to visit South Korea is in May and October with generally perfect weather in Seoul. The worst months are January, July, August and December that can have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in South Korea. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to South Korea? Get detailed historical weather averages for many cities in South Korea.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.