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Weather in September in Nagano

Planning a journey to Nagano this September and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What is the weather like in Nagano in September?

Nagano is a region in Japan. September in Nagano generally has warm temperatures, with heavy precipitation. During September, summer is in full swing.

Temperatures

The average maximum temperatures are warm and range from 22°C in Omachi to 25°C in Ueda. Nighttime temperatures generally drop to 15°C in Ueda and 13°C in Omachi.

To explore the conditions in Nagano in more detail, check the map below.

Precipitation

In September, precipitation varies across different areas. From heavy rainfall in Tateshina with an average of 162 mm to heavy rainfall in Otari with 306 mm.

Average sunshine

Hakuba enjoys a balanced 115 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

For an in-depth overview of the yearly conditions, do visit our Nagano climate page.

Where to go in Nagano in September

Find more information for the most popular destinations in the Nagano on the map below. Click on a destination dot for more details.

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).

Select a Month of Interest

Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Japan, check out our Nagano's climate page.

Popular destinations

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

Hakuba

In September Hakuba generally has high temperatures with maximum daytime temperatures around 23°C, minimum nighttime temperatures around 15°C and heavy monthly rainfall. So on average the conditions are poor that month.

Hakuba
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
<<  
27°C 
19°C 
166 hours 
289 mm 
20 days 
poor 
23°C 
15°C 
115 hours 
306 mm 
20 days 
poor 
October   >> October
>>  
17°C 
8°C 
129 hours 
236 mm 
17 days 
poor 
Climate in Hakuba

Yamanouchi

In September Yamanouchi generally has high temperatures with maximum daytime temperatures around 24°C, minimum nighttime temperatures around 15°C and heavy monthly rainfall. So on average the conditions are tolerable that month.

Yamanouchi
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
<<  
28°C 
19°C 
206 hours 
186 mm 
21 days 
24°C 
15°C 
142 hours 
192 mm 
21 days 
October   >> October
>>  
17°C 
8°C 
155 hours 
159 mm 
17 days 
Climate in Yamanouchi

Matsumoto

In September Matsumoto generally has high temperatures with maximum daytime temperatures around 24°C, minimum nighttime temperatures around 14°C and heavy monthly rainfall. So on average the conditions are unpleasant that month.

Matsumoto
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
<<  
28°C 
18°C 
206 hours 
170 mm 
19 days 
24°C 
14°C 
142 hours 
220 mm 
19 days 
October   >> October
>>  
18°C 
8°C 
155 hours 
197 mm 
15 days 
Climate in Matsumoto

Nozawa Onsen

In September Nozawa Onsen generally has high temperatures with maximum daytime temperatures around 25°C, minimum nighttime temperatures around 16°C and heavy monthly rainfall. So on average the conditions are unpleasant that month.

Nozawa Onsen
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
<<  
29°C 
20°C 
197 hours 
203 mm 
19 days 
25°C 
16°C 
128 hours 
212 mm 
20 days 
October   >> October
>>  
19°C 
9°C 
135 hours 
184 mm 
17 days 
Climate in Nozawa Onsen

Karuizawa

In September Karuizawa generally has high temperatures with maximum daytime temperatures around 24°C, minimum nighttime temperatures around 15°C and heavy monthly rainfall. So on average the conditions are unpleasant that month.

Karuizawa
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
<<  
28°C 
19°C 
206 hours 
211 mm 
20 days 
24°C 
15°C 
142 hours 
224 mm 
20 days 
October   >> October
>>  
18°C 
9°C 
155 hours 
178 mm 
15 days 
Climate in Karuizawa

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

Is September the best time to visit Nagano?

In our opinion, September may not be the ideal time to visit Nagano due to the typically poor weather in Hakuba.

Generally speaking, provide poor weather in Hakuba.

Interested in more climate information?

We have much more information about the climate in Nagano.

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 travel conditions. Find out where to go with our weather planner.