September in Japan
Weather Overview
September marks the slow transition from summer to autumn in Japan. The intense heat of August begins to ease, especially in the second half of the month. However, the first half can still feel quite summer-like, with warm temperatures and lingering humidity—particularly in central and southern Japan. For many locals, September brings a welcome relief from the relentless sun, even though the air can still feel heavy.
Daytime temperatures in Tokyo and Osaka often remain in the high 20s°C (around 82–86°F) during early September, gradually dropping to the mid-20s by the end of the month. Nights become more comfortable, dipping below 20°C in some areas. Hokkaido begins to feel distinctly autumnal, with crisp mornings and golden hills. However, it’s important to note that September is one of Japan’s peak typhoon months, and coastal or southern areas—especially Okinawa, Kyushu, and Shikoku—can experience heavy rain and wind, sometimes disrupting travel plans. Typhoons can also bring temporary downpours to cities like Tokyo or Nagoya, though they usually pass within a day or two.
Clothing
Packing for September requires flexibility. In the first two weeks, **light summer clothing** like short sleeves, breathable shirts, and skirts or shorts are still appropriate, especially in cities and lower altitudes. As the month progresses, **long sleeves, thin pants, and a light jacket** become more comfortable, particularly in the evenings. If you’re traveling to the mountains or visiting Hokkaido, you’ll definitely want a **light fleece or cardigan**.
Because of typhoon season, a compact umbrella or light raincoat is essential. It’s also smart to bring comfortable walking shoes with grip, as streets and temple paths can get slick after rain.
How to Enjoy September in Japan
September offers a unique blend of **late-summer vibrancy and early-autumn calm**. It’s a quieter time to travel, with fewer tourists than in spring or peak summer. Gardens and parks begin to take on a golden tint, and rice paddies turn brilliant yellow just before harvest, especially in the countryside. It’s a beautiful moment for photography, especially in places like Kanazawa, Takayama, or the outskirts of Kyoto.
Many mountain areas become especially appealing in September. It’s a great time for hiking in Nagano, Nikko, or Daisetsuzan National Park in Hokkaido, before the full autumn foliage rush in October. Seaside towns like Kamakura, Shimoda, or the Seto Inland Sea also feel calmer and more relaxed after the summer crowds leave.
In the cities, the mood softens. Locals switch from iced drinks to warm tea, and seasonal sweets begin to feature chestnut, sweet potato, and fig. This is also the beginning of the “cultural season” in Japan, when museums and galleries open new exhibitions, and classical performances quietly resume.
Seasonal Events and Holidays
One of the most beloved events in September is **Tsukimi**, or the Moon Viewing Festival. Traditionally held on a clear night in mid-to-late September, it honors the beauty of the full autumn moon. People decorate with pampas grass, enjoy rice dumplings (tsukimi dango), and reflect on the changing season. Some temples and gardens host special evening illuminations during this time, offering a gentle, contemplative experience.
There is also Respect for the Aged Day (Keiro no Hi) on the third Monday of September and Autumn Equinox Day (Shubun no Hi) around the 22nd or 23rd. These public holidays often create a long weekend, leading to a slight increase in domestic travel. Trains and hotels may be a bit more crowded during this time.
Travel Tips
Because of the chance of typhoons, it’s wise to **stay flexible with your itinerary**. If you’re planning outdoor activities, always have a backup indoor option like a museum, historical house, or hot spring nearby. Check weather forecasts daily, especially if you’re flying or taking long-distance trains.
September is also a great time to explore Japan’s less touristy destinations, since the heat has faded and the crowds haven’t returned yet. If you’ve always wanted to explore inland areas like Kiso Valley, Kurashiki, or Hagi, this is a fantastic window.
For budget-conscious travelers, September offers slightly lower accommodation rates compared to the high summer or October foliage season. Just remember to book early if traveling on public holiday weekends.
Summary: Is September a Good Time to Visit Japan?
September is a gentle, underrated month for travel in Japan. It carries the richness of late summer but whispers of autumn. With fewer crowds, lower prices, and nature quietly preparing for its most beautiful season, it’s perfect for those who prefer a slower, more reflective pace.
Though typhoons are a risk, they rarely last more than a day or two, and their passing often leaves behind clear blue skies and fresh air. A walk through a sun-dappled garden, a quiet moon-viewing night, or a train ride through golden rice fields—September in Japan feels like the season catching its breath before the dramatic beauty of fall.