As summer begins in Japan, the heat and humidity can be intense—especially for those not used to it. Every year, thousands of people across Japan are affected by heatstroke (熱中症 / necchūshō), and it can happen quickly.
Whether you’re traveling, working, or studying in Japan, it’s important to know how to spot the signs of heatstroke, how to respond, and how to stay safe—especially in public spaces like trains and train stations.
A Note for International Students in Japan
If you’re an international student living in Japan—especially if you just arrived—you may not be familiar with how intense the summer can be here. The combination of high humidity, urban heat, and crowded commutes can be overwhelming.
At DEOW Japan, we support international students across the country, and summer safety is one of the key concerns during orientation. Please take the following precautions seriously—not just for yourself, but for your classmates and fellow commuters too.
What Is Heatstroke?
Heatstroke happens when your body overheats and can’t cool down properly. In Japan, even walking to school or riding the train during peak heat hours can put you at risk—especially if you’re dehydrated or wearing heavy clothes.
Symptoms to Watch For
Be alert for these signs in yourself or others:
- Dizziness or fainting
- Headache
- Nausea or vomiting
- Muscle cramps
- Excessive sweating or sudden lack of sweating
- Disorientation or confusion
- Flushed or hot skin
- Fainting or losing consciousness
What to Do on a Train or in Public
If someone looks unwell from the heat, or if you feel symptoms yourself, here’s what to do:
Get Off the Train or Find a Staff Member
- If you’re on a train and feeling sick, get off at the next station. If you see someone else in trouble, alert the station staff (駅員さん / ekiin-san) or press the emergency button.
- Japanese phrase:
「熱中症かもしれません。」(Necchūshō kamo shiremasen.)
“They may have heatstroke.”
- Japanese phrase:
- If you’re on a train and feeling sick, get off at the next station. If you see someone else in trouble, alert the station staff (駅員さん / ekiin-san) or press the emergency button.
Move to a Cooler Spot
- Stations and trains often have air-conditioned areas. Move the affected person there if possible.
Hydrate
- If conscious, drink water or a sports drink (Pocari Sweat, Aquarius). Avoid caffeine or alcohol.
Cool the Body
- Apply something cold—like a wet towel or a chilled bottle—to the neck, armpits, or groin area.
Call for Help
- If the person faints, is unresponsive, or their symptoms are severe, call 119 for emergency services.
Tips to Prevent Heatstroke
Especially for international students new to Japan:
- Drink water regularly, even if you’re not thirsty.
- Wear light and breathable clothing.
- Take breaks in air-conditioned cafes, convenience stores, or campus lounges.
- Carry a folding fan, cooling wipes, or a small towel.
- Avoid outdoor activity between 10:00 a.m. and 4:00 p.m.
- Keep an electrolyte drink with you—available at any convenience store.
Support from DEOW Japan
At DEOW Japan, we’re here to help international students adjust to life in Japan—including navigating health and safety during the intense summer months. If you’re feeling sick or unsure what to do, don’t hesitate to reach out to your school office or your DEOW advisor.
We also recommend saving key emergency contacts on your phone and knowing where the nearest hospital or clinic is located.
Stay Safe, Stay Cool
Japan’s summer is full of exciting events like fireworks festivals and summer matsuri, but always keep your health a priority. Recognizing heatstroke early can prevent serious illness—and even save lives.
Stay cool, hydrated, and prepared. And remember, you’re not alone—whether you’re a tourist or an international student, there are people and resources ready to help.