Tokyo

Japan Weather in September

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

Thinking about venturing to Japan this September and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What to Expect in Japan in September

The weather in Japan in September can be quite varied, with temperatures that range from pleasant to very warm and precipitation levels ranging from high to heavy. The month of September is in the summer season.

Temperatures

The average highest temperatures fluctuate between pleasant in Nemuro at 18°C (64°F) to very warm in Moriguchi at 30°C (86°F). Nighttime temperatures generally drop to 21°C (70°F) in Moriguchi and 15°C (59°F) in Nemuro.

To learn more about the conditions in specific areas of Japan, check out the map below.

Precipitation

In September, precipitation varies across different areas. From high rainfall in Rebun Island with an average of 129 mm (5.1 in) to heavy rainfall in Shingu with 352 mm (14 in).

Average sunshine

Sunshine is moderately available across various locations. In Tokyo, you can expect around 128 hours of sunlight in September, which gives a pleasant combination of sun and shade. For those who want maximum sunshine, our weather planner can point you toward the sunniest places on Earth.

Explore Japan by month

Pick a month to see the average temperature, rainfall and sunshine in Japan — and find the best time to visit. (based on Tokyo)

Best Places to Visit in Japan in September

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

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 Japan

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

Temperature range in Japan (September)

Precipitation variation in Japan (September)

Tokyo

In September Tokyo generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 21°C (70°F) and heavy monthly rainfall. So on average the conditions are tolerable that month.

August
September
October
Max temperature
32°C (90°F)
28°C (82°F)
23°C (73°F)
Min temperature
25°C (77°F)
21°C (70°F)
16°C (61°F)
Monthly sun hours
177 hours
128 hours
129 hours
Monthly rainfall
116 mm (4.6 in)
195 mm (7.7 in)
211 mm (8.3 in)
Monthly rainy days
16 days
19 days
17 days
Weather conditions

Kyoto

In September Kyoto generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 19°C (66°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

August
September
October
Max temperature
33°C (91°F)
29°C (84°F)
23°C (73°F)
Min temperature
23°C (73°F)
19°C (66°F)
13°C (55°F)
Monthly sun hours
185 hours
140 hours
160 hours
Monthly rainfall
148 mm (5.8 in)
202 mm (8 in)
162 mm (6.4 in)
Monthly rainy days
17 days
18 days
15 days
Weather conditions

Osaka

In September Osaka generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 21°C (70°F) and heavy monthly rainfall. So on average the conditions are tolerable that month.

August
September
October
Max temperature
34°C (93°F)
30°C (86°F)
24°C (75°F)
Min temperature
25°C (77°F)
21°C (70°F)
15°C (59°F)
Monthly sun hours
223 hours
156 hours
163 hours
Monthly rainfall
117 mm (4.6 in)
176 mm (6.9 in)
153 mm (6 in)
Monthly rainy days
16 days
18 days
14 days
Weather conditions

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
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

Hakone

In September Hakone generally has high temperatures with maximum daytime temperatures around 26°C (79°F), minimum nighttime temperatures around 20°C (68°F) and heavy monthly rainfall. So on average the conditions are poor that month.

August
September
October
Max temperature
29°C (84°F)
26°C (79°F)
21°C (70°F)
Min temperature
23°C (73°F)
20°C (68°F)
15°C (59°F)
Monthly rainfall
181 mm (7.1 in)
272 mm (11 in)
263 mm (10 in)
Monthly rainy days
17 days
19 days
15 days
Weather conditions

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

Popular cities in September

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

City Weather Day temp Night temp Rainfall
Tokyo 28°C (82°F) 21°C (70°F) 195 mm (7.7 in)
Osaka 30°C (86°F) 21°C (70°F) 176 mm (6.9 in)
Kyoto 29°C (84°F) 19°C (66°F) 202 mm (8 in)
Hakone 26°C (79°F) 20°C (68°F) 272 mm (11 in)
Hiroshima 29°C (84°F) 20°C (68°F) 170 mm (6.7 in)
Nara 30°C (86°F) 20°C (68°F) 168 mm (6.6 in)

Japan weather in September: frequently asked questions

What is the weather like in Japan in September?

In September, Japan generally has tolerable weather conditions. Tokyo sees daytime temperatures near 28°C (82°F), with nights cooling to roughly 21°C (70°F).

What is the average temperature in Japan in September?

Tokyo averages a daytime maximum of 28°C (82°F) in September, with overnight lows close to 21°C (70°F).

Does Japan get a lot of rain in September?

Rainfall in Japan peaks during September. Tokyo averages roughly 195 mm (7.7 in), so frequent and sometimes heavy showers are the norm.

Is September a Good Time to Visit Japan?

Given the typically tolerable weather conditions in Tokyo, September might be a good time to visit Japan.

Generally speaking, May, June and November provide pleasant weather in Tokyo. In contrast, January tends to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Japan.

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.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.