Early autumn continues to offer mostly pleasant weather across Japan this week. Expect plenty of sunshine early on, with clouds gradually building mid-week and some rain likely heading into the weekend. Northern Japan will remain comfortably cool, while central and southern regions stay warm and slightly humid — ideal for outdoor sightseeing if you plan ahead for passing showers.

As of September 8, forecasts indicate that no typhoons are approaching mainland Japan.

Japan's typhoon season runs from May through October, with most activity from July to September. During a typhoon, transit delays and cancellations can be expected. Be sure to stay updated on the latest weather and flight information. For real-time updates on railways and airports, visit LIVE JAPAN's transport information page.

September marks the transition from summer's peak to the gentle embrace of autumn. While the intense heat begins to fade, a new season of cultural and natural beauty emerges. This is an ideal time to experience Japan's shift, from the last of the summer festivals to the beginning of the harvest season.

Across Japan, the arrival of autumn is celebrated with various festivals. The Kishiwada Danjiri Matsuri in Osaka Prefecture is one of the most thrilling, where teams pull giant, elaborately carved floats through the streets at high speed.

For nature lovers, September is the perfect time to visit Hokkaido, where the first signs of autumn foliage appear on the mountains. At Daisetsuzan National Park, you can witness the leaves turning fiery shades of red and gold, a precursor to the nationwide fall colors that will follow in the coming months.

As the days cool, the focus shifts to Japan's culinary traditions. This is the harvest season, and markets and restaurants begin to feature seasonal delights. You can enjoy freshly harvested rice, sweet potatoes, and chestnuts. It’s a great time to explore local food festivals and try seasonal Japanese foods and delicacies.

Expect a mostly sunny and comfortable week in Tokyo. Highs will range from 27–31°C (81–88°F), with overnight lows around 18–22°C (64–72°F). Skies stay clear through the early part of the week, with cloud cover and a slight chance of showers arriving toward the weekend.

Sapporo starts the week with clear skies and mild temperatures, gradually shifting to cloudier and possibly rainy conditions later on. Highs should remain in the low to mid-20s°C (68–77°F).

Sendai will see a pleasant mix of sun and clouds, with daytime highs in the upper teens to high 20s°C (66–82°F). A slight chance of rain appears later in the week.

Expect a warm and mostly dry week in Osaka, with temperatures ranging from 29–33°C (84–91°F) during the day and mild nights around 21–24°C (70–75°F). Cloud cover will increase toward the weekend with a small chance of rain.

Fukuoka will be warm and a bit unsettled this week, with highs in the high 20s to low 30s°C (82–88°F). Rain chances remain moderate throughout, so expect a few scattered showers.

A warm and tropical feel continues in Naha, with highs in the low 30s°C (86–90°F). The week will bring a mix of sunshine and clouds, with a slight increase in rain chances by the weekend.

The forecast was AI-generated and then human-edited. Source for forecast and images: Japan Meteorological Agency website (www.jma.go.jp)

Whether you're planning to be in Japan this week or later this year, check out these fun things you can add to your itinerary!