Nagano Prefecture

Nagano Prefecture Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Nagano Prefecture, Japan in September.

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Hakuba Yamanouchi Matsumoto Nozawa Onsen

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

What to Expect in Nagano Prefecture in September

Nagano Prefecture, Japan is a region in Japan. September in Nagano Prefecture 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 (72°F) in Omachi to 25°C (77°F) in Ueda. Nighttime temperatures generally drop to 15°C (59°F) in Ueda and 13°C (55°F) in Omachi.

To explore the conditions in Nagano Prefecture, Japan 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 (6.4 in) to heavy rainfall in Otari with 306 mm (12 in).

Average sunshine

Sunshine amounts are decent in most places. Hakuba gets approximately 115 hours of sunlight in September, offering a reasonable amount of both bright and cloudy periods. Curious about sunnier destinations? Our weather planner makes it easy to find places worldwide with pleasant weather.

Explore Nagano Prefecture by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Best Places to Visit in Nagano Prefecture in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Nagano Prefecture.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Nagano Prefecture

What is the weather like in September for some of the most popular destinations in Nagano Prefecture, Japan?

Temperature range in Nagano Prefecture (September)

Precipitation variation in Nagano Prefecture (September)

Hakuba

In September Hakuba generally has high temperatures with maximum daytime temperatures around 23°C (73°F), minimum nighttime temperatures around 15°C (59°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« August
September
October »
August
September
October
Max temperature
27°C (81°F)
23°C (73°F)
17°C (63°F)
Min temperature
19°C (66°F)
15°C (59°F)
8°C (46°F)
Monthly sun hours
166 hours
115 hours
129 hours
Monthly rainfall
289 mm (11 in)
306 mm (12 in)
236 mm (9.3 in)
Monthly rainy days
20 days
20 days
17 days
Weather conditions
poor
poor
poor
Climate in Hakuba →

Yamanouchi

In September Yamanouchi generally has high temperatures with maximum daytime temperatures around 24°C (75°F), minimum nighttime temperatures around 15°C (59°F) and heavy monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
28°C (82°F)
24°C (75°F)
17°C (63°F)
Min temperature
19°C (66°F)
15°C (59°F)
8°C (46°F)
Monthly sun hours
206 hours
142 hours
155 hours
Monthly rainfall
186 mm (7.3 in)
192 mm (7.6 in)
159 mm (6.3 in)
Monthly rainy days
21 days
21 days
17 days
Weather conditions
tolerable
tolerable
unpleasant
Climate in Yamanouchi →

Matsumoto

In September Matsumoto generally has high temperatures with maximum daytime temperatures around 24°C (75°F), minimum nighttime temperatures around 14°C (57°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
28°C (82°F)
24°C (75°F)
18°C (64°F)
Min temperature
18°C (64°F)
14°C (57°F)
8°C (46°F)
Monthly sun hours
206 hours
142 hours
155 hours
Monthly rainfall
170 mm (6.7 in)
220 mm (8.7 in)
197 mm (7.8 in)
Monthly rainy days
19 days
19 days
15 days
Weather conditions
pleasant
unpleasant
unpleasant
Climate in Matsumoto →

Nozawa Onsen

In September Nozawa Onsen generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 16°C (61°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
29°C (84°F)
25°C (77°F)
19°C (66°F)
Min temperature
20°C (68°F)
16°C (61°F)
9°C (48°F)
Monthly sun hours
197 hours
128 hours
135 hours
Monthly rainfall
203 mm (8 in)
212 mm (8.3 in)
184 mm (7.2 in)
Monthly rainy days
19 days
20 days
17 days
Weather conditions
unpleasant
unpleasant
unpleasant
Climate in Nozawa Onsen →

Karuizawa

In September Karuizawa generally has high temperatures with maximum daytime temperatures around 24°C (75°F), minimum nighttime temperatures around 15°C (59°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
28°C (82°F)
24°C (75°F)
18°C (64°F)
Min temperature
19°C (66°F)
15°C (59°F)
9°C (48°F)
Monthly sun hours
206 hours
142 hours
155 hours
Monthly rainfall
211 mm (8.3 in)
224 mm (8.8 in)
178 mm (7 in)
Monthly rainy days
20 days
20 days
15 days
Weather conditions
unpleasant
unpleasant
tolerable
Climate in Karuizawa →

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

Popular cities in September

Day & night temperatures, rainfall and average weather in Nagano Prefecture in September.

City Weather Day temp Night temp Rainfall
Hakuba 23°C (73°F) 15°C (59°F) 306 mm (12 in)
Yamanouchi 24°C (75°F) 15°C (59°F) 192 mm (7.6 in)
Matsumoto 24°C (75°F) 14°C (57°F) 220 mm (8.7 in)
Nozawa Onsen 25°C (77°F) 16°C (61°F) 212 mm (8.3 in)
Karuizawa 24°C (75°F) 15°C (59°F) 224 mm (8.8 in)
Otari 23°C (73°F) 15°C (59°F) 306 mm (12 in)

Nagano Prefecture weather in September: frequently asked questions

What is the weather like in Nagano Prefecture, Japan in September?

September in Nagano Prefecture, Japan brings poor weather. In Hakuba, daytime temperatures are typically around 23°C (73°F) and nighttime lows hover near 15°C (59°F).

What is the average temperature in Nagano Prefecture, Japan in September?

Hakuba averages a daytime maximum of 23°C (73°F) in September, with overnight lows close to 15°C (59°F).

Does Nagano Prefecture, Japan get a lot of rain in September?

Expect plenty of rainfall. Hakuba records an average of 306 mm (12 in) in September, putting it among the wetter months for Nagano Prefecture, Japan.

Is September a Good Time to Visit Nagano Prefecture, Japan?

In our opinion, September may not be the ideal time to visit Nagano Prefecture, Japan 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 Prefecture.

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.

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