Nagasaki Weather in August

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

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

What to Expect in Nagasaki in August

Nagasaki, Japan is a region in Japan. August in Nagasaki generally has temperatures that range from warm to very warm, with heavy precipitation. The month of August is in the summer season.

Temperatures

The average maximum daytime temperatures vary from warm in Nagasaki at 30°C (86°F) to very warm in Unzen at 32°C (90°F). Nighttime temperatures generally drop to 25°C (77°F) in Unzen and 26°C (79°F) in Nagasaki. In Nagasaki, Japan, August typically stands out as the hottest month of the year. If you're planning a visit during this time, it would be wise to come prepared. Packing light and breathable summer cloths will ensure you stay comfortable throughout your stay.

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

Precipitation

In August, precipitation varies across different areas. From heavy rainfall in Hirado with an average of 175 mm (6.9 in) to heavy rainfall in Isahaya with 190 mm (7.5 in).

Average sunshine

Most destinations offer generous amounts of sunshine this August. For example, Nagasaki gets approximately 209 hours of sunlight, perfect for anyone wanting bright, sunny days.

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)

Best Places to Visit in Nagasaki in August

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

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 August for some of the most popular destinations in Nagasaki, Japan?

Temperature range in Nagasaki (August)

Precipitation variation in Nagasaki (August)

Nagasaki

In August Nagasaki generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 26°C (79°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
28°C (82°F)
30°C (86°F)
28°C (82°F)
Min temperature
25°C (77°F)
26°C (79°F)
23°C (73°F)
Monthly sun hours
177 hours
209 hours
173 hours
Monthly rainfall
330 mm (13 in)
188 mm (7.4 in)
214 mm (8.4 in)
Monthly rainy days
19 days
17 days
17 days
Weather conditions

Unzen

In August Unzen generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
30°C (86°F)
32°C (90°F)
29°C (84°F)
Min temperature
24°C (75°F)
25°C (77°F)
22°C (72°F)
Monthly sun hours
177 hours
209 hours
173 hours
Monthly rainfall
350 mm (14 in)
190 mm (7.5 in)
215 mm (8.5 in)
Monthly rainy days
20 days
17 days
17 days
Weather conditions

Sasebo

In August Sasebo generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 26°C (79°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
30°C (86°F)
31°C (88°F)
29°C (84°F)
Min temperature
25°C (77°F)
26°C (79°F)
22°C (72°F)
Monthly sun hours
177 hours
209 hours
173 hours
Monthly rainfall
296 mm (12 in)
187 mm (7.4 in)
201 mm (7.9 in)
Monthly rainy days
19 days
16 days
16 days
Weather conditions

Hirado

In August Hirado generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 26°C (79°F) and heavy monthly rainfall. So on average the conditions are tolerable that month.

July
August
September
Max temperature
29°C (84°F)
30°C (86°F)
28°C (82°F)
Min temperature
25°C (77°F)
26°C (79°F)
23°C (73°F)
Monthly rainfall
269 mm (11 in)
175 mm (6.9 in)
196 mm (7.7 in)
Monthly rainy days
18 days
15 days
16 days
Weather conditions

Isahaya

In August Isahaya generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 26°C (79°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
29°C (84°F)
31°C (88°F)
28°C (82°F)
Min temperature
25°C (77°F)
26°C (79°F)
23°C (73°F)
Monthly sun hours
177 hours
209 hours
173 hours
Monthly rainfall
337 mm (13 in)
190 mm (7.5 in)
211 mm (8.3 in)
Monthly rainy days
20 days
17 days
17 days
Weather conditions

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

Popular cities in August

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

City Weather Day temp Night temp Rainfall
Nagasaki 30°C (86°F) 26°C (79°F) 188 mm (7.4 in)
Unzen 32°C (90°F) 25°C (77°F) 190 mm (7.5 in)
Sasebo 31°C (88°F) 26°C (79°F) 187 mm (7.4 in)
Hirado 30°C (86°F) 26°C (79°F) 175 mm (6.9 in)
Isahaya 31°C (88°F) 26°C (79°F) 190 mm (7.5 in)
Omura 31°C (88°F) 26°C (79°F) 189 mm (7.4 in)

Nagasaki weather in August: frequently asked questions

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

Expect poor weather across Nagasaki, Japan in August. The popular destination of Nagasaki averages 30°C (86°F) by day and 26°C (79°F) at night during this summer month.

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

Nagasaki averages a daytime maximum of 30°C (86°F) in August, with overnight lows close to 26°C (79°F).

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

Expect plenty of rainfall. Nagasaki records an average of 188 mm (7.4 in) in August, putting it among the wetter months for Nagasaki, Japan.

Is August a Good Time to Visit Nagasaki, Japan?

In our view, August might not be the best time to travel to Nagasaki, Japan with often unpleasant weather in Nagasaki.

Generally speaking, the best visiting conditions can be found in October offering mostly pleasant weather in Nagasaki. The weather in February, June, July and August, on the other hand, tends to be poor.

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.

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