How to Handle the Heat in Japan
Navigating the sweltering summer heat in Japan can be a challenging yet rewarding experience for travelers. From dressing appropriately to seeking out cool spots and indulging in refreshing treats, there are various strategies to stay comfortable and make the most of your trip.
Japan's climate is influenced by its geographical location, being surrounded by the Pacific Ocean and Sea of Japan. The country experiences four distinct seasons - spring, summer, autumn, and winter - each characterized by different weather patterns. Spring is mild and known for cherry blossom viewing, while summer is hot and humid with frequent typhoons. Autumn is marked by colorful foliage, and winter brings cold temperatures and snow in some regions. The climate varies across the country, with Hokkaido in the north experiencing harsh winters, and Okinawa in the south having a subtropical climate.
Understanding the climate in Japan is important for residents and tourists alike, as it can affect daily activities and travel plans. It is crucial to be prepared for the weather conditions of each season, such as bringing umbrellas during the rainy season in June, or dressing warmly in winter. Additionally, being aware of typhoon season in summer and early autumn can help to stay safe and avoid travel disruptions.
Hot and Humid
This article focuses on the high-humidity summer heat experienced across much of Japan. Humidity plays a significant role in how we perceive heat. When the air is humid, our bodies struggle to efficiently cool down through sweating, as the high moisture content in the air slows down the evaporation process. This results in us feeling even hotter than the actual temperature, making humid conditions feel much more uncomfortable compared to dry heat.
The body's inability to effectively regulate temperature in humid environments can lead to heat-related illnesses, such as heat exhaustion or heat stroke, as our core body temperature rises above safe levels. Research also shows that people tend to feel more irritable and lethargic in humid conditions, as the body's excessive effort to cool down can drain energy levels.
Clothing
When it comes to dressing appropriately for hot and humid weather, it is essential to choose clothing that is both breathable and lightweight. Fabrics such as cotton, linen, and rayon are ideal choices as they allow your skin to breathe and help wick away moisture, keeping you cool and comfortable. Avoid synthetic materials like polyester, as they can trap heat and humidity, making you feel even hotter.
Loose-fitting clothing can also help keep you cool in hot and humid weather. Tight clothing can restrict airflow and make you feel suffocated, so opting for flowy dresses, loose tops, and shorts can help you stay comfortable. It is also important to wear light-colored clothing as dark colors absorb heat, while light colors reflect it. Try to choose the right clothing for hot and humid weather, to maximize your comfort.
Author's note: I've seen tons of nonsense posted online, some supposedly by locals, that people coming to Japan (especially women) should "cover up" their bodies (and sometimes entire heads). That you should never wear shorts, that sandals are a "no-no," you can't show your tattoos walking around, you can't wear loose, airflow-promoting tops... Well, I've been living here in Japan for nearly 20 years, have traveled all around the country in all seasons, and I call bullshit on all that.
Some (certainly not all!) Japanese tend to be a bit "body shy" and they don't wear shorts all that much except at the beach... Japanese fashionable clothing tends to be a bit muted in colors, probably for the same reason.
But nobody really cares what foreign tourists wear, except that certain temples will strongly demand that you take your shoes OFF in certain areas!
Shoes
When it comes to selecting footwear for comfort in hot and humid weather, there are several factors to consider. Firstly, it is important to choose shoes that are breathable and allow for air circulation to prevent sweating and discomfort. Sandals or open-toe shoes are ideal options as they provide ventilation and help keep your feet cool. Closed shoes made of lightweight material will also allow your feet to breathe.
Whatever style you select, it is crucial to choose footwear that provides adequate support and cushioning to prevent fatigue and pain from extended periods of walking or standing in the heat. Look for shoes with cushioned insoles and arch support to reduce strain on your feet and provide comfort throughout the day.
Additionally, consider the type of sole on your shoes - a rubber sole with good grip can help prevent slips on slippery surfaces caused by sweat or rain in humid weather. Try to prioritize breathability, support, and traction in your footwear choices for hot and humid weather conditions.
Hydration and Sun Protection Tips
When temperatures rise and humidity levels increase, our bodies lose more water through sweat, making it crucial to drink plenty of fluids throughout the day. To stay well-hydrated, it is recommended to consume at least 8-10 cups of water daily if engaging in physical activity or spending much time outdoors. Electrolyte-rich beverages, such as coconut water or sports drinks, can help replenish minerals lost through sweat and help maintain optimal hydration levels.
When exposed to strong sunlight in hot and humid conditions, it is important to protect your skin from harmful UV rays to prevent sunburn and reduce the risk of skin damage. To safeguard against sunburn and skin cancer, it is advised to apply sunscreen with a high SPF value of at least 30, reapply every 2 hours, and move through shade during peak hours of sunlight. Wearing protective clothing, such as hats, sunglasses, and lightweight, long-sleeved shirts, can also help shield your skin from UV radiation and prevent overheating.
Refreshing Japanese Summer Treats
Summer in Japan is a time of delicious seasonal treats that help beat the scorching heat. From traditional favorites like kakigori (shaved ice with syrup) to modern creations like ice cream mochi and matcha parfaits, Japanese summer treats offer a refreshing and indulgent escape from the humidity. The beauty of these treats lies in their ability to not only cool you down but also delight your taste buds with their unique flavors and textures. Whether strolling through a local street festival or cooling off in a trendy café, indulging in these sweet treats is a quintessential part of the Japanese summer experience.
One of the highlights is the wide variety of seasonal fruits and flavors that are incorporated into these desserts. Watermelon, mango, and melon often take center stage, adding a refreshing burst of sweetness to traditional treats like kakigori and anmitsu. The use of ingredients like adzuki beans, green tea, and yuzu further elevate these desserts, showcasing the depth of flavor and culinary creativity that Japanese cuisine is known for.
Taking Frequent Breaks
As the summer temperatures rise, it is essential to prioritize one's health and well-being by taking breaks to cool down. Overexposure to heat can have serious effects on the body, including dehydration, heat exhaustion, and even heat stroke. Cooling down by seeking shade, staying hydrated, and taking breaks in air-conditioned spaces can help prevent these dangerous outcomes.
Additionally, being willing to occasionally step into a café or take other short breaks from the heat will also provide a physical and mental refresh, allowing travelers to re-energize at intervals throughout the day and have more fun!
Recognizing Signs of Heat Exhaustion and Heatstroke
It is important to know the signs of heat exhaustion and heatstroke in order to prevent serious health consequences. Heat exhaustion is typically characterized by symptoms such as excessive sweating, weakness, nausea, and dizziness. Individuals may experience rapid heartbeat, muscle cramps, and headache. It is crucial to immediately move to a cool, shaded area and drink plenty of water if you or someone else is showing signs of heat exhaustion. Most people recover over ten to twenty minutes, but should then move into a cooler environment as soon as possible, as their body has still suffered serious stress.
Heatstroke is a more severe condition that occurs when the body is unable to regulate its temperature, leading to a dangerously high body temperature. Symptoms of heatstroke include confusion, fainting, seizures, and even loss of consciousness. In heatstroke the victim's skin becomes dry and feels hot, whereas in heat exhaustion people are significantly sweating. Call for emergency services immediately if heatstroke is suspected! Also take immediate steps to lower the person's body temperature, such as applying ice packs and removing excess clothing while waiting for medical help.
Pro Tip from Author, Jay Tee:
When you first start feeling tired or over-hot, try to find a spot to rest BEFORE you're completely exhausted! Take a stroll just one block away from tourist-crowded areas and you'll discover quiet streets with charming local shops that could use your business. This is true anywhere you're not in the heart of a bustling city. (But make that two blocks in extremely crowded areas.)
I lead my tour groups to do this all summer long, and it usually works very well. Try it!