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JapanThe weather in September in Honshu
It's warm in September in Honshu with an average temperature of 25°C. Temperatures this month range from a low of 22°C to a high of 28°C. At night, you can expect temperatures between 14°C and 20°C.
Looking for sun? September isn’t a good month to be in Honshu. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Honshu, Japan. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 33°C in 2023, Honshu reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 15°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 7°C to a highest value of 23°C.
Rainfall amount
In September, there is an average of 189 mm of precipitation, spread over 20 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
Daily weather in September for Honshu
Click on any day in September to get detailed info about the usual weather on that day in Honshu. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Honshu | New York | |
|---|---|---|
| Average temperature | 25°C | 27°C |
| Max. temperature | 28°C | 31°C |
| Min. temperature | 14°C | -5°C |
| Total precipitation | 189 mm | 57 mm |
| Rainy days | 20 days | 9 days |
Start of September
The month of September starts in Honshu with hot temps, averaging around 27°C during the day and nights around 20°C.
Mid September
By mid-September, daytime temps drop to around 25°C, with nights around 18°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of September
By the end of September, the average daytime temperature in Honshu is around 24°C, while nighttime temps are about 15°C. There’s a significant chance of many days with precipitation.
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
The typhoon season in Honshu runs from June to November.
Check out the climate of Honshu for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Honshu, Japan. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Honshu
Temperature in September in Honshu over the years
Precipitation charts
These charts show the average amount of precipitation in September in Honshu, Japan. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Honshu
Total precipitation in September in Honshu over the years
Daily UV index in September in Honshu
This chart shows the average daily UV index in September in Honshu, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Honshu
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Average weather in Honshu by month
Click on a month below to see detailed weather info for Honshu. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.