Hokkaido - Japan weather in September 2025
September
Hokkaido - Japan weather in September 2025
September
Day
22 °C
Night
14 °C
Sea
20 °C
Precipitation
143 mm
in month
Rainy days
13 days
in month
Daylight
12 hours
average
Sunshine
5 hours
average
Humidity
77 %
Day
22 °C
Night
14 °C
Sea
20 °C
Precipitation
143 mm
in month
Rainy days
13 days
in month
Daylight
12 hours
average
Sunshine
5 hours
average
Humidity
77 %
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Weather overview and FAQs
Weather overview
In Hokkaido in September, the average air temperature ranges from 22 °C (72 °F) during the day to 14 °C (57 °F) at night. There are 13 days of rain on average, where the rainfall is 143 mm (5.63 in).
Is September a good month to visit Hokkaido?
There are good conditions for visiting in September in Hokkaido. There are some people, who may feel a slight chill at 22 °C (72 °F), but others will feel perfectly fine. A sea temperature of 20 °C (69 °F) can seem colder to some, but others will call it refreshing. The temperature of 14 °C (57 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
What is the temperature in Hokkaido during the day in September?
In Hokkaido in September, the average daily temperatures will be 22 °C (72 °F). A comfortable temperature for most people, where it is neither too cold nor too hot, and a large number of activities can be carried out comfortably, including sunbathing by the water. Lighter clothing will be suitable - shorts, skirts, t-shirts, jackets; a light sweater and long trousers may also be useful.
What is the average number of rainy days in September in Hokkaido?
In September in Hokkaido, we can expect 13 days to be rainy, that is, days when precipitation exceeds 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 - 44 % days.
Is the temperature rising or falling in the course of time in September in Hokkaido?
During September in Hokkaido, the day temperatures are decreasing - from 24 °C (75 °F) at the beginning of the month to 19 °C (66 °F) at the end of the month.
How heavy is the precipitation in Hokkaido in September?
In Hokkaido in September, there is 143 mm (5.63 in) rainfall, which means on average 5 mm (0.19 in) rainfall per day.
What level of humidity is to expect in Hokkaido in September?
Humidity in Hokkaido in September is 77 %.
What is the air temperature in Hokkaido in September at night?
The average night temperature in Hokkaido in September is 14 °C (57 °F). Nights can be cooler, morning running can be refreshing but choose appropriate clothing, evening outdoor sitting can be pleasant but you can also be cold.
How many hours of sun to expect in September in Hokkaido?
In Hokkaido in September, you can expect around 5 hours of sunshine.
How long is the day (from dawn till dusk) in Hokkaido in September?
The length of daylight in Hokkaido in September is 12 hours.
Is Hokkaido rainier in September than in October?
No, in Hokkaido in September it does not rain more than in October.
How windy is Hokkaido in September?
An average wind scale that can be expected in Hokkaido in September is 3.
Is the weather in Hokkaido warmer in September than in August?
No, September is not warmer in Hokkaido than August.
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