Gunma Weather in September

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

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Minakami Kusatsu Shibukawa Takasaki

Are you planning a trip a to Gunma, Japan in September and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in Gunma in September

Gunma, Japan is a region in Japan. September in Gunma 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 Katashina to 27°C (81°F) in Ota. Nighttime temperatures generally drop to 19°C (66°F) in Ota and 15°C (59°F) in Katashina.

For a closer look at conditions across Gunma, Japan, refer to the map below.

Precipitation

In September, precipitation varies across different areas. From heavy rainfall in Tsumagoi with an average of 179 mm (7 in) to heavy rainfall in Takasaki with 258 mm (10 in).

Average sunshine

Sunshine levels are moderate in most locations. Minakami typically sees 163 hours of sunlight, creating comfortable conditions that aren't too bright or too dim. Looking for something sunnier? Our weather planner helps you discover destinations with more reliable sunshine.

Explore Gunma by month

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

Best Places to Visit in Gunma in September

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

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 Gunma

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

Temperature range in Gunma (September)

Precipitation variation in Gunma (September)

Minakami

In September Minakami generally has high temperatures with maximum daytime temperatures around 24°C (75°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
27°C (81°F)
24°C (75°F)
18°C (64°F)
Min temperature
19°C (66°F)
16°C (61°F)
9°C (48°F)
Monthly sun hours
207 hours
163 hours
180 hours
Monthly rainfall
159 mm (6.3 in)
200 mm (7.9 in)
166 mm (6.5 in)
Monthly rainy days
21 days
21 days
16 days
Weather conditions
pleasant
unpleasant
tolerable
Climate in Minakami →

Kusatsu

In September Kusatsu 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)
195 mm (7.7 in)
160 mm (6.3 in)
Monthly rainy days
21 days
21 days
16 days
Weather conditions
tolerable
tolerable
unpleasant
Climate in Kusatsu →

Shibukawa

In September Shibukawa generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 17°C (63°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)
20°C (68°F)
Min temperature
21°C (70°F)
17°C (63°F)
11°C (52°F)
Monthly sun hours
207 hours
163 hours
180 hours
Monthly rainfall
167 mm (6.6 in)
216 mm (8.5 in)
181 mm (7.1 in)
Monthly rainy days
20 days
21 days
16 days
Weather conditions
pleasant
unpleasant
tolerable
Climate in Shibukawa →

Takasaki

In September Takasaki generally has high temperatures with maximum daytime temperatures around 26°C (79°F), minimum nighttime temperatures around 18°C (64°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
30°C (86°F)
26°C (79°F)
21°C (70°F)
Min temperature
22°C (72°F)
18°C (64°F)
12°C (54°F)
Monthly sun hours
207 hours
163 hours
180 hours
Monthly rainfall
214 mm (8.4 in)
258 mm (10 in)
215 mm (8.5 in)
Monthly rainy days
19 days
20 days
15 days
Weather conditions
poor
unpleasant
unpleasant
Climate in Takasaki →

Tsumagoi

In September Tsumagoi 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 pleasant 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)
8°C (46°F)
Monthly sun hours
206 hours
142 hours
155 hours
Monthly rainfall
162 mm (6.4 in)
179 mm (7 in)
150 mm (5.9 in)
Monthly rainy days
21 days
20 days
15 days
Weather conditions
pleasant
pleasant
tolerable
Climate in Tsumagoi →

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

Popular cities in September

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

City Weather Day temp Night temp Rainfall
Minakami 24°C (75°F) 16°C (61°F) 200 mm (7.9 in)
Kusatsu 24°C (75°F) 15°C (59°F) 195 mm (7.7 in)
Shibukawa 25°C (77°F) 17°C (63°F) 216 mm (8.5 in)
Takasaki 26°C (79°F) 18°C (64°F) 258 mm (10 in)
Tsumagoi 24°C (75°F) 15°C (59°F) 179 mm (7 in)
Nakanojo 24°C (75°F) 16°C (61°F) 219 mm (8.6 in)

Gunma weather in September: frequently asked questions

What is the weather like in Gunma, Japan in September?

Gunma, Japan typically experiences unpleasant weather in September, part of the summer season. Daytime highs in Minakami average around 24°C (75°F), and temperatures drop to about 16°C (61°F) at night.

What is the average temperature in Gunma, Japan in September?

Daytime temperatures in Minakami peak at roughly 24°C (75°F) in September, dropping to about 16°C (61°F) overnight.

Does Gunma, Japan get a lot of rain in September?

Expect plenty of rainfall. Minakami records an average of 200 mm (7.9 in) in September, putting it among the wetter months for Gunma, Japan.

Is September a Good Time to Visit Gunma, Japan?

In our view, September might not be the best time to travel to Gunma, Japan with often unpleasant weather in Minakami.

Generally speaking, May, June and August provide pleasant weather in Minakami. On the other hand, the months of January, February, March and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Gunma.

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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