Heat Wave Guide: Cooling Centers, Heat Warnings & Summer Safety Tips

South Korea experiences increasingly intense summers every year, and Seoul Metropolitan Government has introduced its 2026 Heat Wave Citizen Action Guide to help residents and visitors stay safe during periods of extreme heat.

Unlike previous years, heat alerts now place greater emphasis on the "apparent temperature" (feels-like temperature) rather than simply the actual air temperature. Since humidity can make hot weather much more dangerous, these updated warnings better reflect the real conditions people experience outdoors.

Whether you're living in Korea, visiting for vacation, or exploring the city during the summer, here's everything you need to know.

Why Seoul's Summer Heat Can Be Dangerous

Summer temperatures in Seoul frequently exceed 35°C (95°F), while high humidity can push the feels-like temperature much higher.

Extreme heat can lead to:

• Heat exhaustion

• Heat cramps

• Heat stroke

• Dehydration

• Fainting

• Swelling

• Serious medical emergencies

  
  

Children, elderly individuals, outdoor workers, pregnant women, and people with chronic illnesses are particularly vulnerable.

Credit: Seoul Government

Simple Ways to Stay Safe

The Seoul Metropolitan Government recommends following these basic safety measures:

1. Drink plenty of water, even before you feel thirsty.

2. Check daily heat wave forecasts.

3. Take regular breaks inside air-conditioned buildings or designated cooling centers.

4. Avoid outdoor activities during the hottest hours (typically between 2 PM and 5 PM).

5. Wear light-colored, breathable clothing.

6. Minimize direct sun exposure by wearing a hat or using an umbrella.

7. Check on elderly family members, neighbors, and anyone living alone.

Even healthy adults can suffer heat-related illnesses if they stay outside for too long.

Understanding Korea's Heat Alert System

Korea issues several levels of heat alerts based on the apparent temperature, which combines air temperature and humidity.

Heat Advisory

Issued when:

• Apparent temperature reaches 33°C (91.4°F) or higher

• Conditions continue for 2 days or more

This is the first warning to begin limiting outdoor activities.

Heat Warning

Issued when:

• Apparent temperature reaches 35°C (95°F) or higher

• Lasts for 2 days or more

Outdoor work and strenuous exercise should be minimized.

Severe Heat Warning

The highest alert level.

This is issued when:

• Extremely dangerous heat persists

• Daily apparent temperatures remain exceptionally high

• Conditions become life-threatening for vulnerable groups

Authorities may expand cooling center operations and encourage residents to remain indoors whenever possible.

Tropical Night Advisory

Even nighttime can become dangerous.

A Tropical Night Advisory is issued when:

• Overnight temperatures remain 25°C (77°F) or higher

• Last for at least one night

Without cooler nighttime temperatures, the body cannot recover properly from daytime heat, increasing health risks.

Credit: Seoul Government

How to Find Cooling Centers in Seoul

One of the most useful resources during the summer is Seoul's network of Cooling Centers.

Cooling centers are air-conditioned public facilities where anyone can temporarily escape the heat.

They are available throughout the city and often include:

• Community centers

• Public buildings

• Libraries

• Welfare centers

• Senior centers

• Other designated public facilities

• 
  

Option 1: Safe City Seoul

Visit:

https://safecity.seoul.go.kr

Navigate to:

Find Shelter → Cooling Center

You can search nearby locations and other heat reduction facilities.

Option 2: Safe Korea

Visit:

https://www.safekorea.go.kr

Then select:

Shelter Facilities → Cooling Center

You can also search by region to locate the nearest available cooling center.

What Are Heat Reduction Facilities?

Besides cooling centers, Seoul also provides various Heat Reduction Facilities, including:

• Shade structures

• Cooling shelters

• Misting stations

• Rest areas

• Temporary shaded seating

These facilities help reduce outdoor temperatures and provide quick relief for pedestrians.

Know the Symptoms of Heat-Related Illness

Recognizing symptoms early can save lives.

Heat Stroke (Medical Emergency)

Symptoms:

• Body temperature above 40°C (104°F)

• Hot, dry skin

• Confusion

• Loss of consciousness

• Possible seizures

Call emergency services immediately.

Heat Exhaustion

Symptoms:

• Heavy sweating

• Weakness

• Dizziness

• Nausea

• Pale skin

• Rapid pulse

Move to a cool place and drink water.

Heat Cramps

Symptoms:

• Painful muscle cramps

• Usually in the legs, arms, or abdomen

Rest and replace fluids and electrolytes.

Heat Syncope

Symptoms:

• Sudden dizziness

• Temporary fainting

Usually caused by standing in extreme heat for extended periods.

Heat Edema

Symptoms:

• Swelling of the hands, feet, or ankles

Usually improves after resting in a cool environment.

Tips for Tourists Visiting Korea During Summer

If you're visiting Seoul between June and September, remember to:

• Carry a reusable water bottle.

• Use sunscreen frequently.

• Take advantage of shopping malls, subway stations, museums, and cafés to cool down.

• Plan sightseeing early in the morning or after sunset.

• Download weather apps to monitor heat alerts.

Many subway stations and public buildings are excellent places to cool off during the hottest part of the day.

Seoul's summers are becoming hotter each year, but the city's extensive cooling center network and improved heat warning system make it easier to stay safe.

By monitoring weather alerts, staying hydrated, limiting outdoor activity during peak heat, and knowing where to find nearby cooling centers, you can enjoy the city while reducing the risk of heat-related illness.

Whether you're a resident, international student, or tourist, a little preparation can make a big difference during Korea's hottest months.