September weather forecast
Japan

September in Japan marks the transition from summer to autumn, with a gradual decrease in temperatures and humidity levels throughout the country. However, it is also the peak of the typhoon season, which can bring heavy rainfall and stormy weather.

In northern Japan, specifically in Hokkaido, temperatures begin to cool down, averaging 20°C (68°F). The region experiences less rain compared to the rest of the country, with an average precipitation of 80mm (3.15"). As September progresses, the leaves start changing colors, marking the beginning of the autumn foliage season in Hokkaido.

In central Japan, including the Sea of Japan coastline and the Central Highlands, temperatures cool down to an average of 26°C (78.8°F). The region can still experience occasional heavy rain due to typhoons, especially in early September. However, the frequency of rain decreases towards the end of the month.

In the southern regions, including Okinawa, temperatures remain relatively high, averaging 30°C (86°F). This region bears the brunt of the typhoon season, which can bring heavy rain and strong winds. However, the frequency of storms decreases towards the end of the month.

Nationwide, September sees a decrease in precipitation, with average rainfall ranging from 100mm (3.94") to 180mm (7.09"). Despite the occasional storms, the weather gradually stabilizes towards the end of the month, making way for clearer skies.

While the weather in September can be unpredictable due to the typhoon season, the gradual change in temperatures and the beginning of autumn foliage in certain regions make it an interesting time to visit Japan. The month also sees traditional events, including the harvest moon viewing, known as Tsukimi, which adds a unique charm to the season.

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• Tokyo - September »
  In Tokyo, in September, it is raining for 12.5 days, with typically 46mm (1.81") of accumulated precipitation. In Tokyo, in September, it is raining for 12.5 days, with typically 46mm (1.81") of accumulated precipitation.
• Yokohama - September »
  In Yokohama during September, the rain falls for 15 days and regularly aggregates up to 104mm (4.09") of precipitation. On the first day of September in Yokohama, sunrise is at 05:13 and sunset at 18:08.
• Osaka - September »
  In September, a gradual cooling trend sets in from the height of Osaka's summer heat. In September, in Osaka, Japan, the rain falls for 9.4 days.
• Nagoya - September »
  The month with the most rainfall in Nagoya, Japan, is September, when the rain falls for 11.9 days and typically aggregates up to 234mm (9.21") of precipitation. The month with the most rainfall in Nagoya is September, when the rain falls for 11.9 days and typically aggregates up to 234mm (9.21") of precipitation.
• Sapporo - September »
  How many days does it rain in September in Sapporo? In September, in Sapporo, the rain falls for 17 days.
• Fukuoka - September »
  Cooling trends characterize September as Fukuoka transitions into Autumn, providing a respite from the summer heat. In Fukuoka the average seawater temperature in September is 26°C (78.8°F).
• Kobe - September »
  The average nighttime temperature in Kobe lowers to a pleasant 20.7°C (69.3°F) throughout September. On the first day of September in Kobe sunrise is at 05:32 and sunset at 18:26.
• Kyoto - September »
  In Kyoto, in September, during 15.5 rainfall days, 86mm (3.39") of precipitation is typically accumulated. On the first day of September in Kyoto sunrise is at 05:29 and sunset at 18:24.
• Kawasaki - September »
  In Kawasaki in September, during 14.7 rainfall days, 90mm (3.54") of precipitation is typically accumulated. The month of September brings a slight respite from the relentless summer heat in Kawasaki.
• Saitama - September »
  On the first day of September in Saitama, sunrise is at 05:13 and sunset at 18:09. On the first day of September in Saitama, sunrise is at 05:13 and sunset at 18:09.
• Hiroshima - September »
  In Hiroshima, in September, the average water temperature is 25.5°C (77.9°F). September brings a pleasant change to Hiroshima's weather with temperatures beginning to tone down from the summer highs.
• Sendai - September »
  On the first day of September in Sendai sunrise is at 05:06 and sunset at 18:06. In Sendai, Japan, the average seawater temperature in September is 22.7°C (72.9°F).