Which is the hottest month in South Korea?

The hottest time of year in Seoul, South Korea is normally August. Expect maximum daytime temperatures to reach 29°C with high heat and humidity.

Best time to visit South Korea

Q: When is the best time to visit South Korea?

The best time to visit South Korea (Seoul) is May based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

Q: Which month has the most rain in South Korea?

In terms of rainfall, July is usually the wettest month in Seoul, South Korea with 358mm on average. There are normally 16 days in July with some rain.

Q: When is it sunniest in South Korea?

The sunniest time of year in Seoul, South Korea is normally October with bright sunshine on average for 60% of daylight hours; that's 7 hours of sunshine per day.

Find the best time to visit South Korea and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

South Korea by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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Top South Korea destinations

Below are average maximum temperatures at popular countries, regions and places in South Korea in June. Select a holiday destination to see more weather parameters.

All South Korea destinations

When is the best time to visit South Korea?

The best time to visit South Korea (Seoul) is May based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

1.5
Jan
1.5
Feb
1.5
Mar
2.5
Apr
4
May
4
Jun
4
Jul
3.5
Aug
4
Sep
3.5
Oct
1
Nov
1
Dec

Change criteria

Max Day Temperature (°C)

1
Jan
3
Feb
10
Mar
17
Apr
23
May
26
Jun
28
Jul
29
Aug
25
Sep
20
Oct
11
Nov
4
Dec

Hours of Sunshine (daily)

6
Jan
6
Feb
7
Mar
8
Apr
8
May
7
Jun
6
Jul
6
Aug
7
Sep
7
Oct
5
Nov
5
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for South Korea (Seoul) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

South Korea weather overview

South Korea occupies the southern end of a mountainous peninsular and experiences very cold winters for its latitude. The harshest winter conditions prevail from December to February. Spring and autumn months are mild and fairly dry while summers are hot and very rainy, particularly in July and August. Rain can fall at any time of year.

What to pack for South Korea weather

In the summer, take light clothing and a raincoat, put in warmer clothes for spring and autumn trips and pack very heavy clothes for the winter months when icy winds can send temperatures plunging well below freezing point.

More about South Korea

Explore our complete guide to South Korea with the latest travel advice for travellers and holidaymakers including official updates and local travel tips for South Korea.

Essential travel guide
Travel guidance
Travel health
Travel features
Top travel deals
FAQs

South Korea travel guide - essential info

Below is a beginner's guide to South Korea with essential travel facts such as dominant language spoken, typical flight time from the UK and the local currency. You can also check whether visas are required and what plug adapter you need to pack.

South Korea - quick facts
Flight time^✝	11 hours
Time difference	UK +9 hours
Language(s)	Korean
Currency	South Korean Won
Electricity	C + F plug (220V)
Driving side	Right

Why visit South Korea?

Considering a holiday to the South Korea? Here are some of the very good reasons it makes such a wonderful holiday destination be it for culture or nature to ensure you get the most out of your 2025/2026 escape.

Culture
Nature
Nightlife

South Korea tourist information

Korea Tourism Organization

✝ = Typical flight time from the UK.

Travelling to South Korea?
Hotels Flights eSIMs

South Korea travel guidance

Check the latest travel guidance and advice on visiting South Korea from official government sources (in english) from around the world including entry requirements and travel restrictions.

UK traveller advice for South Korea - UK FCDO
Irish traveller advice for South Korea - Department of Foreign Affairs, Ireland
Canadian travel advice for South Korea - Government of Canada
US travel advisories for South Korea - US Department of State
Safe travel advisories for South Korea - Ministry of Foreign Affairs, New Zealand
Smarter traveller advice for South Korea - Department of Foreign Affairs, Australia

Learn more about the current safety and security risks from terrorism, natural disasters and more. Read about the local laws and customs to consider when travelling around South Korea.

Note: UK FCDO - UK Foreign, Commonwealth & Development Office

South Korea travel health

Find out more about staying safe when travelling to South Korea with the latest guidance on required vaccinations and recommended medication to take with you.

Vaccines & medicines for South Korea - CDC
Health & vaccinations for South Korea - TravelHealthPro, NaTHNac
How to stay safe & healthy in South Korea - Fit for Travel, Public Health Scotland

Check out the general travel tips for staying safe and healthy in South Korea, risks of preventable diseases and what to pack.

Note: CDC - Centers for Disease Control and Prevention

South Korea travel features

Do you want to learn more about South Korea? Read our latest features covering travel tips and insider destination guides on where to go and what to do in South Korea.

We don't currently have any travel features on South Korea. Discover more about holiday destinations around the world with this selection of general travel articles.

South Korea FAQs

Read our frequently asked questions about travelling to South Korea including the current entry restrictions, driving side, electrical plugs used and much more.

Which month has the most rain in South Korea?

In terms of rainfall, January is usually the wettest month in Seoul, South Korea with 0mm on average. There are normally no days in January with some rain.

When is it sunniest in South Korea?

The sunniest time of year in Seoul, South Korea is normally January with bright sunshine on average for 0% of daylight hours; that's 0 hours of sunshine per day.

When is the sea warmest in South Korea?

The sea is usually at its warmest in Seoul, South Korea in January when the water temperature reaches 0°C.

What is the flight time to South Korea from the UK?

The flight time to South Korea from the UK is typically 11 hours.

What is the time difference between South Korea and the UK?

The time difference between South Korea and the UK is UK time+9 hours.

What is the main language spoken in South Korea?

The main language spoken in South Korea is Korean.

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What is the currency in South Korea?

The currency in South Korea is the South Korean Won (KRW).

Send money to South Korea with Wise.com^*.

Which plugs are used in South Korea?

South Korea uses electrical plug type C + F (220 Volts).

Which side of the road do they drive on in South Korea?

They drive on the right side of the road in South Korea.

Find out more about driving in South Korea with International Drivers Association^*.

South Korea travel deals

Holidays to South Korea

Check out the latest deals, discount codes and special offers on holidays to South Korea in 2025/2026. Pay low deposits and save with last minute holiday availability and free kids places.