Nagasaki Weather in September

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

🔎
Nagasaki Unzen Sasebo Hirado

Planning a trip to Nagasaki, Japan this September? Here's what you need to know about the weather:

What to Expect in Nagasaki in September

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

Temperatures

You can expect warm maximum daytime temperatures of around 28°C (82°F) and nighttime temperatures around 23°C (73°F) in Nagasaki.

For specific regional insights in Nagasaki, Japan, refer to the map provided below.

Precipitation

In September, precipitation varies across different areas. From heavy rainfall in Hirado with an average of 196 mm (7.7 in) to heavy rainfall in Unzen with 215 mm (8.5 in).

Average sunshine

Sunshine is fairly consistent across many areas. Nagasaki receives about 173 hours of sunlight in September, providing a good balance between sunny spells and cloud cover. If you're after more sunshine hours, take a look at our weather planner for other sun-rich destinations worldwide.

Explore Nagasaki by month

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

January12°C (54°F) February12°C (54°F) March15°C (59°F) April18°C (64°F) May22°C (72°F) June25°C (77°F) This monthJuly28°C (82°F) August30°C (86°F) September28°C (82°F) October23°C (73°F) November19°C (66°F) December14°C (57°F)
Best Time to Visit Nagasaki →

Best Places to Visit in Nagasaki in September

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

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 Nagasaki

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

Temperature range in Nagasaki (September)

Precipitation variation in Nagasaki (September)

Nagasaki

In September Nagasaki generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 23°C (73°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)
28°C (82°F)
23°C (73°F)
Min temperature
26°C (79°F)
23°C (73°F)
19°C (66°F)
Monthly sun hours
209 hours
173 hours
180 hours
Monthly rainfall
188 mm (7.4 in)
214 mm (8.4 in)
110 mm (4.3 in)
Monthly rainy days
17 days
17 days
13 days
Weather conditions
unpleasant
unpleasant
pleasant
Climate in Nagasaki →

Unzen

In September Unzen generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 22°C (72°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
32°C (90°F)
29°C (84°F)
24°C (75°F)
Min temperature
25°C (77°F)
22°C (72°F)
17°C (63°F)
Monthly sun hours
209 hours
173 hours
180 hours
Monthly rainfall
190 mm (7.5 in)
215 mm (8.5 in)
113 mm (4.4 in)
Monthly rainy days
17 days
17 days
13 days
Weather conditions
unpleasant
unpleasant
pleasant
Climate in Unzen →

Sasebo

In September Sasebo generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 22°C (72°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
31°C (88°F)
29°C (84°F)
24°C (75°F)
Min temperature
26°C (79°F)
22°C (72°F)
17°C (63°F)
Monthly sun hours
209 hours
173 hours
180 hours
Monthly rainfall
187 mm (7.4 in)
201 mm (7.9 in)
104 mm (4.1 in)
Monthly rainy days
16 days
16 days
12 days
Weather conditions
unpleasant
unpleasant
pleasant
Climate in Sasebo →

Hirado

In September Hirado generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
30°C (86°F)
28°C (82°F)
23°C (73°F)
Min temperature
26°C (79°F)
23°C (73°F)
18°C (64°F)
Monthly rainfall
175 mm (6.9 in)
196 mm (7.7 in)
105 mm (4.1 in)
Monthly rainy days
15 days
16 days
12 days
Weather conditions
tolerable
tolerable
pleasant
Climate in Hirado →

Isahaya

In September Isahaya generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
31°C (88°F)
28°C (82°F)
24°C (75°F)
Min temperature
26°C (79°F)
23°C (73°F)
18°C (64°F)
Monthly sun hours
209 hours
173 hours
180 hours
Monthly rainfall
190 mm (7.5 in)
211 mm (8.3 in)
111 mm (4.4 in)
Monthly rainy days
17 days
17 days
13 days
Weather conditions
unpleasant
unpleasant
pleasant
Climate in Isahaya →

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

Popular cities in September

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

City Weather Day temp Night temp Rainfall
Nagasaki 28°C (82°F) 23°C (73°F) 214 mm (8.4 in)
Unzen 29°C (84°F) 22°C (72°F) 215 mm (8.5 in)
Sasebo 29°C (84°F) 22°C (72°F) 201 mm (7.9 in)
Hirado 28°C (82°F) 23°C (73°F) 196 mm (7.7 in)
Isahaya 28°C (82°F) 23°C (73°F) 211 mm (8.3 in)
Omura 28°C (82°F) 23°C (73°F) 205 mm (8.1 in)

Nagasaki weather in September: frequently asked questions

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

Nagasaki, Japan typically experiences unpleasant weather in September, part of the summer season. Daytime highs in Nagasaki average around 28°C (82°F), and temperatures drop to about 23°C (73°F) at night.

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

Nagasaki averages a daytime maximum of 28°C (82°F) in September, with overnight lows close to 23°C (73°F).

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

Rainfall in Nagasaki, Japan peaks during September. Nagasaki averages roughly 214 mm (8.4 in), so frequent and sometimes heavy showers are the norm.

Is September a Good Time to Visit Nagasaki, Japan?

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

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

Interested in more climate information?

We have much more information about the climate in Nagasaki.

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.

Chase the autumn leaves in Japan

Japan is one of these cases which turns into a gold, yellow and orange fairy tale starting from September. And we can honestly say: We cannot imagine a more beautiful season to visit Japan.
Walk the 88 temple circuit

We recommend walking the 88 temple circuit from April til October. Although June, July and August can be a bit wet, hot and humid.
The famous bamboo forests of Arashiyama

The famous bamboo forests of Arashiyama lie just outside the city center of Kyoto and is unique in the world. If you look at photos of this bamboo forest, it looks like you have landed in a fairy-tale world.
10 reasons why you should visit Japan in winter

Here are 10 reasons why you should plan a winter trip to Japan. During this period, popular sights are less busy and prices for flights and hotels much cheaper.
Must visit in Japan →