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JapanThe weather in September in Nagasaki
It's warm in September in Nagasaki with an average temperature of 28°C. Temperatures this month range from a low of 26°C to a high of 31°C. At night, you can expect temperatures between 19°C and 24°C.
Looking for sun? September isn’t a good month to be in Nagasaki. 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 Nagasaki, 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 35°C in 2020, Nagasaki reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 18°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 14°C to a highest value of 28°C.
Rainfall amount
In September, there is an average of 196 mm of precipitation, spread over 22 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
Daily weather in September for Nagasaki
Click on any day in September to get detailed info about the usual weather on that day in Nagasaki. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Nagasaki | New York | |
|---|---|---|
| Average temperature | 28°C | 27°C |
| Max. temperature | 31°C | 31°C |
| Min. temperature | 19°C | -5°C |
| Total precipitation | 196 mm | 57 mm |
| Rainy days | 22 days | 9 days |
Start of September
The month of September starts in Nagasaki with hot temps, averaging around 30°C during the day and nights around 24°C.
Mid September
By mid-September, daytime temps drop to around 28°C, with nights around 22°C. There’s a high chance of precipitation during this time.
End of September
By the end of September, the average daytime temperature in Nagasaki is around 27°C, while nighttime temps are about 20°C. There’s a significant chance of many days with precipitation.
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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 Nagasaki runs from June to November.
Check out the climate of Nagasaki for all months and discover the best travel time
Curious about the weather in other parts of Japan? Check out the climate and weather for spots like Tokyo, Kyōto, Osaka, or explore other destinations in Japan.
Temperature charts
These charts show the average temperatures in September in Nagasaki, Japan. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Nagasaki
Temperature in September in Nagasaki over the years
Precipitation charts
These charts show the average amount of precipitation in September in Nagasaki, 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 Nagasaki
Total precipitation in September in Nagasaki over the years
Daily UV index in September in Nagasaki
This chart shows the average daily UV index in September in Nagasaki, 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 Nagasaki
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Average weather in Nagasaki by month
Click on a month below to see detailed weather info for Nagasaki. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.