South Korea weather

Our guide to the weather in South Korea during May

23

Average high

5

UV Index

118mm

Monthly rainfall

63%

Humidity

We've looked at the most up-to-date weather data for South Korea, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about South Korea weather in May.

How warm is it in South Korea during May?

The temperature reaches around 23℃ during the daytime in May, falling away to 14℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in South Korea during May?

On average, there will be 5 rainy days during the month, amounting to 118.0mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in South Korea during May?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in May. With moderate humidity and mild air temperatures, the breeze will have a slight cooling effect.

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Weather in South Korea

Our month-by-month guide to the weather and climate in South Korea

0.7

South Korea weather in

January
4.2

South Korea weather in

February
10.7

South Korea weather in

March
16.9

South Korea weather in

April
22.9

South Korea weather in

May
27.4

South Korea weather in

June
29.3

South Korea weather in

July
30.0

South Korea weather in

August
26.3

South Korea weather in

September
20.0

South Korea weather in

October
11.8

South Korea weather in

November
2.5

South Korea weather in

December