A typhoon is a type of powerful tropical storm that forms in the northwest Pacific Ocean or the South China Sea, characterized by wind speeds of 17 meters per second or more (10-minute average). Internationally, similar storms with wind speeds of 33 meters per second or more (1-minute average) are also called typhoons.

Depending on the region, these storms are known as cyclones in the Indian Ocean and South Pacific, or hurricanes in the North Atlantic and eastern Pacific north of the equator.

Typhoon season in Japan spans from July to October, peaking in August and September due to warm sea temperatures.

According to the Japan Meteorological Agency, an average of about 25 typhoons occur annually, based on data from 1991 to 2020. The average number of typhoons approaching per month is 2.1 in July, 3.3 in August, 3.3 in September, and 1.7 in October. This means that in peak months, typhoons approach Japan approximately once every one to two weeks.

The regions most affected are Okinawa, Kyushu, and Shikoku. If traveling during this period, monitor weather forecasts closely, especially in these areas. Recent climate changes have led to more intense typhoons, so staying informed and prepared is essential.

Weathernews forecasts around 23 typhoons in 2025, slightly below average. The Japan Weather Association expects typhoon activity from June to October to be near normal overall.

However, Japan may see typical typhoon numbers through July, an increase in August, average levels in September, and possibly above-normal activity in October. A strong Pacific high-pressure system south of Japan could steer typhoons closer to the country and lead to quicker landfall due to nearby formation.

Monitor tropical depressions and projected paths closely, as typhoons may disrupt travel plans. Train, Shinkansen, and flight services can be suspended, so stay updated and flexible.

Typhoons bring heavy rain and strong winds, creating hazards like flying debris, flooding, and road or building damage. To stay safe, avoid going out unnecessarily.

Water levels in rivers and ponds can rise quickly, and waves may become dangerous along the coast. Rain and wind intensify as a typhoon nears, so decide on evacuation during daylight and act early if needed.

Severe weather often disrupts train service, risking delays or cancellations that could leave you stranded. Monitor transport updates closely.

Even distant typhoons can cause heavy rain from moist air inflow, and conditions may remain unstable after the storm passes. Keep checking weather updates, as typhoons can shift in strength and direction.

See below for multilingual websites, apps, and social media accounts to follow during a typhoon.

Next, review your travel plans.

If you have domestic or return flights, check their status in advance. Flights may be canceled ahead of time due to approaching weather, so early confirmation allows time to adjust your transport or accommodation plans.

For Shinkansen or express trains, monitor service updates carefully. Even if your area isn’t affected, your destination might be. Keep tabs on operations along your full route.

See below for helpful resources to check travel information.

Depending on your location, a typhoon may limit your movement and leave you stranded. Major disruptions like flooding or landslides can also cut off utilities, making ATMs unusable. To prepare, carry enough Japanese yen to cover at least a week’s expenses.

Keep your phone fully charged and identify places where you can recharge if needed. During emergencies, convenience stores, internet cafes, and electronics shops often offer charging stations.

Here are the steps to take in case of flight cancellations or delays due to a typhoon.

If your flight is changed or canceled due to a typhoon, airlines typically offer free rebooking or cancellation, even for tickets that normally don't allow changes. Transfers to other carriers may also be arranged. As demand for support can be high, try to complete these procedures by phone or online.

For low-cost carriers (LCCs), policies may differ—some may not offer full refunds or flexible changes even during natural disasters. Check the airline’s cancellation policy when booking to avoid surprises.

Some airlines provide delay or cancellation certificates for flights delayed by 30 minutes or more. These may be required when applying for compensation, as noted in point 4. Check with your airline for availability; many allow you to download the certificate directly from their website.

If your return flight or accommodation is canceled due to a typhoon, you may face unexpected lodging costs. Contact your travel agency or airline—they may help arrange a place to stay, but expenses are usually your responsibility.

Travel insurance or credit card insurance may cover costs from flight delays or cancellations. Check with your provider or card issuer to confirm coverage details.

To file a claim, you’ll need proof of the delay or cancellation and receipts for lodging and meals, so be sure to keep all relevant documents.

In disasters like flooding or landslides, always prioritize safety. Rising water can obscure ditches and streams, increasing the risk of falls, while landslides and rockslides become more likely. Typhoon winds can send objects flying or cause doors to slam, so avoid going out unnecessarily.

Coastal areas can see high waves even before a typhoon arrives, and conditions may stay dangerous afterward. If you're staying near the sea, avoid the beach during these periods.

LIVE JAPAN offers reliable resources for emergency updates, including official transportation information.

The following multilingual sites and apps provide useful information and current updates during disasters. It’s helpful to familiarize yourself with these resources in advance.

During major disasters like typhoons or earthquakes, phone and internet networks may become congested as people check on loved ones. To help with this, Japanese telecom companies offer dedicated safety confirmation tools.

If bad weather continues during your stay, you may need to adjust your plans—but Japan has many enjoyable indoor attractions. Consider switching to indoor activities and expect some disruptions while the typhoon passes.

If a typhoon is approaching or has landed, stay inside your accommodation for safety. You can also visit nearby supermarkets or convenience stores to pick up souvenirs.

Here are some recommended indoor spots to enjoy during stormy weather.

Maxell Aqua Park Shinagawa is a cutting-edge entertainment facility where sound, light, video, and living creatures come together. While indoors, you can enjoy an impressive dolphin performance. It's a great spot for families and couples to visit.

You might also visit Tokyu Kabukicho Tower, a popular entertainment complex that opened in 2023. It features attractions like the mission-based adventure “The Tokyo Matrix” and the lively food hall “Shinjuku Kabuki Hall – Kabuki Yokocho.”

At Kabuki Yokocho, you can enjoy regional soul food from Hokkaido, Kyushu, Okinawa, and more. Evening performances and events add to the fun, making it a great indoor option during bad weather.

For families, Sanrio Puroland is an indoor theme park where you can meet Sanrio characters like Hello Kitty and My Melody. You can take photos with your favorite characters, enjoy shows, and experience various attractions, providing a full day of fun and entertainment.

For those who planned to visit hot springs, consider the water-themed amusement facility "LaQua" next to Tokyo Dome or the 24-hour "Thermae-Yu" in Shinjuku. Both offer excellent spa and onsen experiences within Tokyo, allowing you to relax and enjoy the hot spring atmosphere without leaving the city.

In Osaka, the Kaiyukan—one of the world’s largest aquariums—features a vast tank with whale sharks and immersive nature zones.

On rainy days, the Cup Noodles Museum Osaka Ikeda is also a hit. Make your own Chicken Ramen at the “Chicken Ramen Factory” or customize a cup at the “My Cup Noodles Factory,” all while learning about the history of instant noodles.

For a relaxing indoor option, try "SpaWorld," offering baths themed after 17 countries, or "Naniwa no Yu," known for its natural hot springs. Both are great places to unwind indoors.

If your plans for a day trip or a visit to a hot spring were canceled, it can be quite disappointing. However, there are many tours and activities that can be booked on short notice, even on the same day.

Once the typhoon has passed, consider these options for day trips from Tokyo:
- Mt. Fuji Classic Route Day Tour (from Shinjuku)
- Fruit Picking Tours, such as strawberry picking in spring or grape picking in autumn.

If the weather improves, consider extending your trip to a 1-night, 2-day onsen getaway.

Day Tours

Find Available Accommodation

Sudden downpours, or "guerrilla rainstorms," are caused by rapidly developing cumulonimbus clouds. These powerful weather systems can also trigger other dangerous phenomena such as tornadoes, strong winds, lightning, and hail, so caution is essential.

Lightning can strike anywhere—at sea, on flat land, or in mountainous areas. Open spaces like sports fields, golf courses, outdoor pools, and beaches, as well as high elevations like mountaintops, are especially prone to lightning strikes. If a thunderstorm is approaching, seek shelter in reinforced concrete buildings, cars, buses, or trains. Wooden buildings can also offer protection, but stay at least one meter away from electrical appliances, ceilings, and walls for added safety.

If you encounter a localized downpour, take the following precautions.

During downpours, large amounts of rain can fall in a short time, potentially causing various hazards. There is a risk of landslides in mountainous areas, and normally slow-flowing rivers and irrigation canals can quickly become fast and swollen. Underground passages can also flood, so if you notice any leaks or unusual conditions, move to higher ground promptly.

Flooded roads may have hidden obstacles, making them dangerous, so avoid these areas.

Downpours caused by developed cumulonimbus clouds can also bring strong winds and lightning. If you are outside, seek refuge in a safe building.

Downpours are sudden and difficult to predict. During the summer, carrying a foldable umbrella is advisable, but you should also use resources like the Japan Meteorological Agency’s short-term precipitation forecasts. These can help you determine if rain clouds are approaching and when the downpour might end. Check these updates frequently to plan your actions accordingly.

If you plan to visit Japan in August or September, be prepared for a higher likelihood of encountering typhoons. Additionally, sudden downpours can occur during this time. To ensure a comfortable trip, familiarize yourself with information sites, safety confirmation methods, and procedures for flight cancellations or delays before your trip. It's also wise to have alternative plans in case of bad weather.

(*Note: This information is accurate as of June 2025. Facility hours or availability may change; check official websites for updates.)