Honshu - Japan weather in September 2025
September
Honshu - Japan weather in September 2025
September
Day
28 °C
Night
20 °C
Sea
25 °C
Precipitation
201 mm
in month
Rainy days
13 days
in month
Daylight
12 hours
average
Sunshine
5 hours
average
Humidity
75 %
Day
28 °C
Night
20 °C
Sea
25 °C
Precipitation
201 mm
in month
Rainy days
13 days
in month
Daylight
12 hours
average
Sunshine
5 hours
average
Humidity
75 %
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Weather overview and FAQs
Weather overview
In Honshu in September, the average air temperature ranges from 28 °C (82 °F) during the day to 20 °C (68 °F) at night. There are 13 days of rain on average, where the rainfall is 201 mm (7.91 in).
Is September a good month to visit Honshu?
There are good conditions for visiting in September in Honshu. The daily temperatures in this month reach pleasant 28 °C (82 °F). The seawater temperature reaches ideal 25 °C (78 °F). At night, temperatures hover around a pleasant 20 °C (68 °F).
What is the temperature in Honshu during the day in September?
In September in Honshu, the average daily temperatures will be 28 °C (82 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.
How many days of precipitation on average can I expect in Honshu in September?
There are 13 days, which are rainy in Honshu in September, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 3.1 days of the week, or in general - 45 % days.
What is the air temperature in September in Honshu at night?
The average night temperature in Honshu in September is 20 °C (68 °F). A very pleasant temperature for long evening walks, fun over a drink outside, or doing sports in the morning. If possible, look for a hotel with air conditioning.
How many sunny hours can I expect in September in Honshu?
In Honshu in September, you can expect around 5 hours of sunshine.
What is the rainfall intensity in September in Honshu?
There is precipitation of 201 mm (7.91 in) in September in Honshu, which means 7 mm (0.26 in) rainfall per day on average.
Is it hot in Honshu in September?
In September in Honshu, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.
How long is the day (from dawn till dusk) in Honshu in September?
The length of daylight in Honshu in September is 12 hours.
What level of humidity is to expect in Honshu in September?
Humidity in Honshu in September is 75 %. This humidity is rather above average, but except for sensitive individuals, it should not be a problem.
How windy is it in September in Honshu?
An average wind scale that can be expected in Honshu in September is 3.
Is the weather in Honshu warmer in September than in August?
No, September is not warmer in Honshu than August.
Is Honshu rainier in September than in October?
Yes, Honshu is a rainier September than in October.
Is the temperature rising or falling in the course of time in September in Honshu?
During September in Honshu, the day temperatures are decreasing - from 30 °C (86 °F) at the beginning of the month to 25 °C (77 °F) at the end of the month.
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