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Nagasaki weather in September

Considering a trip to Nagasaki this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What is the weather like in Nagasaki in September?

Nagasaki is a region in Japan. September in Nagasaki generally has warm temperatures, with heavy precipitation. The month of September is in the summer season.

You can expect warm maximum daytime temperatures of around 28°C and nighttime temperatures around 23°C in Nagasaki.

In September, precipitation varies across different areas. From heavy rainfall in Hirado with an average of 196 mm to heavy rainfall in Unzen with 215 mm. Most cities enjoy a balanced amount of sunshine, with around 173 hours of sunlight anticipated in Nagasaki. This ensures the days are neither too dim nor excessively sunny.

To learn more about the conditions in specific areas of Nagasaki in September, check out the map below. For more details on the yearly weather, visit our Nagasaki climate page.

Where to go in Nagasaki in September

Find the average weather conditions in September for the most popular destinations in Nagasaki on the map below. Click on a destination dot for more detailed information.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in Nagasaki

What is the weather like in September for the 5 most popular destinations in Nagasaki?

Average weather in Nagasaki

In September Nagasaki generally has high temperatures with maximum daytime temperatures around 28°C, minimum nighttime temperatures around 23°C and heavy monthly rainfall. So on average the conditions are unpleasant that month.

Nagasaki
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
26°C 
209 hours 
188 mm 
17 days 
28°C 
23°C 
173 hours 
214 mm 
17 days 
October   >> October
>>  
23°C 
19°C 
180 hours 
110 mm 
13 days 
Climate in Nagasaki

Average weather in Unzen

In September Unzen generally has high temperatures with maximum daytime temperatures around 29°C, minimum nighttime temperatures around 22°C and heavy monthly rainfall. So on average the conditions are unpleasant that month.

Unzen
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
32°C 
25°C 
209 hours 
190 mm 
17 days 
29°C 
22°C 
173 hours 
215 mm 
17 days 
October   >> October
>>  
24°C 
17°C 
180 hours 
113 mm 
13 days 
Climate in Unzen

Average weather in Sasebo

In September Sasebo generally has high temperatures with maximum daytime temperatures around 29°C, minimum nighttime temperatures around 22°C and heavy monthly rainfall. So on average the conditions are unpleasant that month.

Sasebo
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
31°C 
26°C 
209 hours 
187 mm 
16 days 
29°C 
22°C 
173 hours 
201 mm 
16 days 
October   >> October
>>  
24°C 
17°C 
180 hours 
104 mm 
12 days 
Climate in Sasebo

Average weather in Hirado

In September Hirado generally has high temperatures with maximum daytime temperatures around 28°C, minimum nighttime temperatures around 23°C and heavy monthly rainfall. So on average the conditions are tolerable that month.

Hirado
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
26°C 
175 mm 
15 days 
28°C 
23°C 
196 mm 
16 days 
October   >> October
>>  
23°C 
18°C 
105 mm 
12 days 
Climate in Hirado

Average weather in Isahaya

In September Isahaya generally has high temperatures with maximum daytime temperatures around 28°C, minimum nighttime temperatures around 23°C and heavy monthly rainfall. So on average the conditions are unpleasant that month.

Isahaya
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
31°C 
26°C 
209 hours 
190 mm 
17 days 
28°C 
23°C 
173 hours 
211 mm 
17 days 
October   >> October
>>  
24°C 
18°C 
180 hours 
111 mm 
13 days 
Climate in Isahaya

Is your destination not in the list? Have a look at other destinations in Nagasaki, in Japan.

Is September the best time to visit Nagasaki?

Given the typically unpleasant weather conditions in Nagasaki, September may not be the ideal time to visit Nagasaki.

Generally speaking, the best visiting conditions can be found in October offering mostly pleasant weather in Nagasaki. In contrast, February, June and July tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Nagasaki. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Japan? Get detailed historical weather averages for many cities in Japan.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.