Driving in Japan During Summer: What You Need to Know

Summer in Japan offers vibrant festivals, lush green landscapes, and the freedom of the open road. However, it also brings extreme heat and sudden, intense rainstorms. Whether you are navigating the scenic countryside or traveling between cities, understanding how to handle these seasonal weather conditions is crucial for a safe and enjoyable road trip.

Protecting Against Extreme Heat

The summer heat in Japan can be unforgiving, with temperatures often exceeding 35°C (95°F). The Japan Automobile Federation (JAF) has conducted extensive tests showing how quickly a vehicle's interior can become dangerous. According to their research, when a car is parked in the sun on a 35°C day with the air conditioning turned off, the interior temperature can reach a life-threatening level in just 15 minutes. The dashboard can become hot enough to cause burns, and the overall heatstroke risk becomes severe.

To protect yourself and your passengers, never leave children, elderly individuals, or pets in a parked car, even for a short errand. When parking, try to find a shaded area or an indoor garage. Using a sunshade on the windshield can help reduce the dashboard temperature, but it will not prevent the cabin from heating up dangerously. Always ensure your vehicle's air conditioning is functioning properly before starting your journey, and stay hydrated by keeping plenty of drinking water in the car.

Navigating Heavy Rain and Slippery Roads

Summer is also the season for sudden downpours and typhoons. Driving in heavy rain requires a different set of skills and heightened awareness. JAF warns that when rain first begins to fall, it mixes with dust and oil on the road, making the surface exceptionally slippery. During these times, it is vital to reduce your speed, especially before entering curves, and avoid sudden braking or sharp steering.

Visibility is another major concern during a downpour. Always turn on your headlights to ensure other drivers can see you. Because braking distances increase significantly on wet roads, you should maintain a much larger following distance than you would in dry conditions. Before you set out, check your rental car's tires; worn tires are far more likely to lose traction and hydroplane, a dangerous condition where the tires glide on a layer of water, resulting in a total loss of steering and braking control.

Avoiding the Dangers of Flooded Roads

Heavy rain can quickly lead to localized flooding, especially in low-lying areas or underpasses. The Ministry of Land, Infrastructure, Transport and Tourism (MLIT) strictly advises against driving through flooded roads. Vehicles are not designed to operate in deep water. If the water level reaches the floor of the car, water can enter the engine or electrical systems, causing the vehicle to stall permanently.

Furthermore, if the water level rises to the bottom of the doors, the external water pressure makes it extremely difficult to open the doors from the inside. If the water reaches halfway up the door, opening it becomes nearly impossible. If you encounter a flooded road, turn around and find an alternate route. Never attempt to cross it. If your vehicle does become stalled in rising water, unbuckle your seatbelt and evacuate immediately before the water pressure traps you inside.

Staying Informed and Prepared

Preparation is your best defense against summer weather hazards. Before hitting the road, check the latest weather forecasts and warnings. The Japan Meteorological Agency (JMA) issues specific advisories for heavy rain and strong winds, and warnings when serious disasters are possible. These updates are accessible in multiple languages and should be monitored daily.

Always listen to the guidance provided by your rental car company and familiarize yourself with the vehicle's emergency equipment, such as hazard lights and escape tools. By respecting the heat, adjusting your driving for the rain, and avoiding flooded areas, you can ensure your summer road trip in Japan remains a memorable and safe adventure.

Top 5 Scenic Drives in Hokkaido for Your Next Road Trip

Hokkaido, Japan's northernmost island, is a paradise for road trip enthusiasts. With its vast landscapes, pristine nature, and well-maintained highways, it offers some of the most breathtaking driving experiences in the country. Whether you're a nature lover, photography enthusiast, or simply seeking adventure, these five scenic drives will transform your Hokkaido vacation into an unforgettable journey.

1. Furano and Biei: Patchwork Hills and Flower Fields

The roads between Furano and Biei wind through rolling farmland, colorful flower fields, and the dramatic Tokachidake mountain range. Summer brings lavender and vivid seasonal blooms, while autumn turns the fields gold. Follow the Patchwork Road and Panorama Road, and stop only at designated parking areas to protect local farms. Allow 3-4 hours for a relaxed circuit with photo stops, cafés, and short walks.

2. The Shiretoko Peninsula Loop: Coastal Wilderness

Located in northeastern Hokkaido, the Shiretoko Peninsula offers one of Japan's most remote and pristine coastal drives. This UNESCO World Heritage site features dramatic cliffs, pristine beaches, and dense forests. The loop drive takes approximately 2-3 hours and rewards drivers with stunning ocean vistas and opportunities to spot wildlife. Summer is the ideal season for this drive, as winter weather can make conditions challenging. Don't miss the scenic viewpoint at Shiretoko Pass, which offers sweeping views of the coastline and Sea of Okhotsk.

3. Lake Toya Scenic Route: Volcanic Beauty

This picturesque drive circles Lake Toya, a caldera lake surrounded by volcanic mountains and charming towns. The approximately 50-kilometer route takes 1-2 hours and offers numerous pullouts for photos and exploration. Stop at hot spring resorts along the way to enjoy traditional onsen experiences. The lake is particularly beautiful during spring cherry blossom season and autumn foliage. The lakeside observatories and roadside parks provide excellent photo opportunities, while sightseeing boats offer closer views of Nakajima Island.

4. Daisetsuzan National Park Scenic Byway: Alpine Splendor

Hokkaido's largest national park offers an incredible driving experience through Japan's most extensive alpine region. The scenic byway winds through dense forests, past crystal-clear streams, and up to high-altitude viewpoints. Summer and early autumn are optimal seasons, with the road typically open from May through October. The drive showcases dramatic mountain scenery, including the iconic Asahidake peak. Plan for at least 3-4 hours to fully appreciate the landscape and make stops at hiking trailheads and scenic overlooks.

5. Otaru to Shakotan: The Blue Coast

This coastal route runs from the historic port of Otaru toward the Shakotan Peninsula along the Sea of Japan. Expect rugged cliffs, fishing villages, turquoise water, and viewpoints near Cape Kamui. The journey is roughly 80 kilometers and takes about two hours without stops, but a half-day is better for seafood lunches and coastal walks. Summer offers the clearest colors; in winter, confirm road and weather conditions before departure.

Essential Tips for Your Hokkaido Road Trip

• Rent a reliable vehicle: Choose a car suited to seasonal conditions and road types
• Plan ahead: Check road conditions and weather forecasts before departing
• Allow extra time: Hokkaido's distances are vast; don't rush your journey
• Carry supplies: Gas stations and restaurants can be sparse in remote areas
• Respect wildlife: Hokkaido is home to bears and deer; drive cautiously, especially at dusk

Experience Hokkaido with Relax Rentacar

Ready to explore Hokkaido's stunning scenic drives? Relax Rentacar offers a wide selection of well-maintained vehicles perfect for your road trip adventure. From compact cars for city exploration to spacious SUVs for mountain terrain, we have the ideal vehicle for your journey. Our rental locations throughout Hokkaido provide convenient pickup and drop-off options, and our knowledgeable staff can recommend the best routes based on your interests and travel dates. Book your rental today and discover why Hokkaido is one of Japan's premier road trip destinations.

Discover Hokkaido's Best Scenic Drives with Relax Rentacar

Hokkaido, Japan's northernmost island, is renowned for its breathtaking natural landscapes, diverse seasons, and serene countryside. One of the best ways to truly experience the island's beauty is by taking a road trip along some of its most scenic routes. Whether you're visiting in spring to see vibrant flower fields, in summer for lush greenery, or in winter for snow-covered panoramas, Hokkaido offers remarkable drives that showcase its unique charm.

At Relax Rentacar, we provide reliable and comfortable car rentals to help you explore these routes at your own pace. Here are the top five scenic drives in Hokkaido that you don't want to miss on your next adventure.

1. Shiretoko Pass Road

The Shiretoko Pass Road winds through the Shiretoko Peninsula, a UNESCO World Heritage site known for its rich nature and wildlife. This drive offers spectacular mountain views, dense forests, and the chance to spot rare animals such as brown bears and deer. The road connects Rausu and Shari, with numerous lookout points where you can stop and savor panoramic views of the Sea of Okhotsk.

2. Niseko Panorama Line

Niseko is famed for its powder snow in winter, but the Niseko Panorama Line is a stunning drive throughout the year. This route meanders up mountainous slopes, offering sweeping vistas of Mount Yotei—often called the "Mount Fuji of Hokkaido"—and rolling farmland. During summer and autumn, the forests along the route explode with vibrant colors, making it a perfect spot for photography enthusiasts.

3. Biei Patchwork Road

One of Hokkaido’s most iconic routes, the Biei Patchwork Road is a gateway to the colorful farmlands that stretch across the region. Named after the patchwork-like patterns created by fields of flowers and crops, this route is particularly mesmerizing during the lavender blooming season in July and the golden hues of autumn. Don’t forget to stop by the famous “Blue Pond,” a surreal, turquoise water body nearby.

4. Furano to Asahikawa via Route 237

This route links the charming towns of Furano and Asahikawa, combining flower fields, rolling hills, and cultural landmarks. Furano’s flower farms bloom spectacularly during summer, while Asahikawa offers urban comforts and the renowned Asahiyama Zoo. The drive along Route 237 includes charming stops such as Ningle Terrace, a quaint crafts village surrounded by nature.

5. Lake Toya Skyline

For lake lovers, the Lake Toya Skyline provides an unforgettable drive with views circling around the beautiful caldera lake. The route features lookout spots atop Mount Usu, where you can overlook volcanic landscapes and the calm, azure waters of Lake Toya. The journey combines adventure with relaxation, perfect for those who wish to balance sightseeing with nature exploration.

Tips for Driving in Hokkaido

• Renting a Car: Choose a reliable rental service like Relax Rentacar to ensure a smooth, stress-free journey with vehicles suited to Hokkaido’s roads and weather.
• Seasonal Preparation: Winter driving requires snow tires and experience handling icy conditions; our vehicles come equipped with winter gear when needed.
• Navigation: Use a GPS system or a navigation app compatible with Japanese locations to avoid getting lost in remote areas.
• Fuel & Facilities: Plan your stops carefully, as gas stations can be sparse in some rural regions.

Exploring Hokkaido by car unlocks a world of stunning natural beauty and cultural experiences. With Relax Rentacar, your journey will be comfortable, flexible, and memorable. Ready to start your scenic drive? Book your car today and embark on an unforgettable road trip through Hokkaido!

Exploring Rural Japan by Car: Hidden Gems

Driving through Japan's countryside is one of the most rewarding ways to discover small towns, secret coastlines, and seasonal landscapes that never make the guidebook front page. With a rental car you control the pace, choose when to stop for roadside soba or a viewpoint, and reach places public transport rarely serves. This guide covers practical tips, recommended routes, and local etiquette to help you plan a confident and memorable road trip across rural Japan.

Why Self-Driving Works in Rural Japan

Rural Japan offers open roads, scenic byways, and attractions spaced far apart. Trains are reliable but can limit timing and mobility. A car lets you chase early morning mist over rice paddies, linger at quiet shrines, or divert to a mountain onsen. The tradeoff is planning: navigation, toll costs, and parking require attention.

Practical Rental and Driving Tips

• Driver documentation: Bring an International Driving Permit (IDP) based on the 1949 Geneva Convention or a Japanese translation for certain countries. Always carry your passport and rental contract.
• Book in advance: Reserve larger vehicles if you need room for luggage or winter gear. Major companies include Toyota Rent a Car, Nippon Rent-A-Car, Times, and local shops in regional airports.
• Navigation: Rent a car with an English GPS or use Google Maps. Download offline maps and add driving-specific apps. Be aware rural signage can be sparse.
• ETC card: Ask the rental counter about an ETC device for automatic tolls. It speeds up payment and avoids change hassles at expressway booths.
• Insurance: Check coverage options and consider supplemental insurance for peace of mind. Note deductibles and whether gravel roads are covered.
• Seasonal gear: In winter bring or rent winter tires and snow chains. In summer keep water and insect repellent on hand for remote hikes.

Etiquette and Road Rules

• Drive on the left. Yield to pedestrians and obey local speed limits, which can be lower on narrow rural roads.
• One-lane roads and agricultural lanes are common. Use passing points and be polite with oncoming drivers.
• Parking: Look for municipal lots or roadside coin parks. Many small towns charge modest rates; leave parking tickets visible when required.
• Noise and respect: Keep the car quiet in residential areas and near shrines. Rural communities value low disturbance.

Hidden Gem Routes to Consider

Below are curated routes that reward the curious driver. Times are approximate and depend on stops.

• Noto Peninsula Loop (Ishikawa): Coastal cliffs, fishing harbors, and Wajima morning market. Great for seafood and sea views.
• Kiso Valley and Kisoji Route (Nagano): Historic post towns like Tsumago and Magome, cedar forests, and quiet mountain passes.
• Iya Valley (Shikoku): Dramatic vine bridges, steep gorges, and hot springs off the main tourist trails.
• San’in Coast and Tsuwano (Shimane): Samurai towns, tidal inlets, and dramatic coastlines with few crowds.
• Oga Peninsula and Nyuto Onsen (Akita): Rugged coastlines and remote onsen villages perfect for autumn colors and winter solitude.

Local Tips for the Best Experience

• Stop at roadside stations (michi-no-eki) for local produce, clean toilets, and maps. These hubs are invaluable for rural travel.
• Plan fuel stops: Some stations close early in remote areas. Fill up when you can.
• Mix activities: Combine short hikes, onsen, and town walks rather than long single-day drives to savor each stop.
• Use cash: Smaller shops and rural eateries may not accept cards.

Exploring rural Japan by car is less about speed and more about discovery. With sensible planning and an open mind you'll find hidden shrines, empty beaches, roadside farmers selling persimmons, and moments of unexpected beauty. Drive safely and enjoy the slow, intimate pace of Japan's countryside.