Osan weather in May (Gyeonggi-do, South Korea)

How's the weather trend in Osan as May approaches? Check out this detailed guide to the month’s weather conditions.

Temperatures

You’ll find the weather in Osan during May to be perfect, with high temperatures and moderate rainfall. Daytime temperatures are expected to be around 25°C, cooling off to about 12°C at night.

Precipitation

Osan in May usually receives moderate rainfall, averaging around 91 mm for the month. Historically, the month has about 8 days of rain.

Average sunshine

Enjoy a sunny month with about 248 hours of sunshine, providing a cheerful and lively atmosphere.

So this is a great month to visit if you prefer dry days with pleasant temperatures. May and October typically offer the most optimal weather. In contrast, January, February, July and August tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Osan climate page with graphs.

 

Osan, monthly averages in May

Min Temperature 12°C  

Max Temperature 25°C  

Chance of Rain 26%  

Precipitation 91 mm  

Rainy days 8 days  

Humidity 65% *  

Sunshine 248 hours *  

Percentage Sunshine 56% *  

Data from: Cheonan, South Korea (38 KM, 23 Miles).

Where to go in South Korea in May

Find out more about the weather in South Korea and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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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°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Osan, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Osan.

Our site offers climate and forecast data for every country in the world. Are you going to South Korea? On this website you can find 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 travel conditions. Find out where to go with our weather planner.