Nagasaki Weather in January

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

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

What to Expect in Nagasaki in January

Nagasaki, Japan is a region in Japan. January in Nagasaki generally has cold temperatures, with moderate precipitation. It's the height of winter.

Temperatures

You can expect cold maximum daytime temperatures of around 12°C (54°F) and nighttime temperatures around 7°C (45°F) in Nagasaki. Typically, it's the chilliest month of the year. Making it a great time for staying indoors and enjoying the warmth. Make sure you're prepared by packing the right winter outfits.

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

Precipitation

In January, precipitation varies across different areas. From moderate rainfall in Sasebo with an average of 73 mm (2.9 in) to moderate rainfall in Nagasaki with 91 mm (3.6 in). Going by our weather data, this month in Nagasaki usually has the least rain, making it the driest month of the year.

Average sunshine

Most places get a reasonable amount of sunshine. Take Nagasaki as an example - it receives around 104 hours of sunlight, offering a nice mix of sunny and partly cloudy days. Want to compare this with brighter destinations? Try our weather planner to explore your options.

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 January

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

Temperature range in Nagasaki (January)

Precipitation variation in Nagasaki (January)

Nagasaki

In January Nagasaki generally has low temperatures with maximum daytime temperatures around 12°C (54°F), minimum nighttime temperatures around 7°C (45°F) and moderate monthly rainfall. So on average the conditions are unpleasant that month.

December
January
February
Max temperature
14°C (57°F)
12°C (54°F)
12°C (54°F)
Min temperature
9°C (48°F)
7°C (45°F)
7°C (45°F)
Monthly sun hours
114 hours
104 hours
124 hours
Monthly rainfall
101 mm (4 in)
91 mm (3.6 in)
116 mm (4.6 in)
Monthly rainy days
20 days
21 days
19 days
Weather conditions

Unzen

In January Unzen generally has low temperatures with maximum daytime temperatures around 11°C (52°F), minimum nighttime temperatures around 5°C (41°F) and moderate monthly rainfall. So on average the conditions are unpleasant that month.

December
January
February
Max temperature
14°C (57°F)
11°C (52°F)
12°C (54°F)
Min temperature
8°C (46°F)
5°C (41°F)
6°C (43°F)
Monthly sun hours
114 hours
104 hours
124 hours
Monthly rainfall
88 mm (3.5 in)
80 mm (3.1 in)
110 mm (4.3 in)
Monthly rainy days
18 days
19 days
18 days
Weather conditions

Sasebo

In January Sasebo generally has low temperatures with maximum daytime temperatures around 11°C (52°F), minimum nighttime temperatures around 5°C (41°F) and moderate monthly rainfall. So on average the conditions are unpleasant that month.

December
January
February
Max temperature
14°C (57°F)
11°C (52°F)
12°C (54°F)
Min temperature
8°C (46°F)
5°C (41°F)
6°C (43°F)
Monthly sun hours
114 hours
104 hours
124 hours
Monthly rainfall
79 mm (3.1 in)
73 mm (2.9 in)
93 mm (3.7 in)
Monthly rainy days
18 days
19 days
18 days
Weather conditions

Hirado

In January Hirado generally has low temperatures with maximum daytime temperatures around 11°C (52°F), minimum nighttime temperatures around 6°C (43°F) and moderate monthly rainfall. So on average the conditions are unpleasant that month.

December
January
February
Max temperature
14°C (57°F)
11°C (52°F)
12°C (54°F)
Min temperature
9°C (48°F)
6°C (43°F)
7°C (45°F)
Monthly rainfall
82 mm (3.2 in)
80 mm (3.1 in)
93 mm (3.7 in)
Monthly rainy days
18 days
19 days
18 days
Weather conditions

Isahaya

In January Isahaya generally has low temperatures with maximum daytime temperatures around 11°C (52°F), minimum nighttime temperatures around 6°C (43°F) and moderate monthly rainfall. So on average the conditions are unpleasant that month.

December
January
February
Max temperature
14°C (57°F)
11°C (52°F)
12°C (54°F)
Min temperature
8°C (46°F)
6°C (43°F)
6°C (43°F)
Monthly sun hours
114 hours
104 hours
124 hours
Monthly rainfall
89 mm (3.5 in)
80 mm (3.1 in)
109 mm (4.3 in)
Monthly rainy days
19 days
20 days
18 days
Weather conditions

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

In our records: Japan January extremes

Notable January records observed across cities in Japan in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the coldest January daytime high in Japan was -15°C (5°F) in Mount Fuji on January 18, 2004.

Popular cities in January

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

City Weather Day temp Night temp Rainfall
Nagasaki 12°C (54°F) 7°C (45°F) 91 mm (3.6 in)
Unzen 11°C (52°F) 5°C (41°F) 80 mm (3.1 in)
Sasebo 11°C (52°F) 5°C (41°F) 73 mm (2.9 in)
Hirado 11°C (52°F) 6°C (43°F) 80 mm (3.1 in)
Isahaya 11°C (52°F) 6°C (43°F) 80 mm (3.1 in)
Omura 11°C (52°F) 6°C (43°F) 74 mm (2.9 in)

Nagasaki weather in January: frequently asked questions

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

January in Nagasaki, Japan brings unpleasant weather. In Nagasaki, daytime temperatures are typically around 12°C (54°F) and nighttime lows hover near 7°C (45°F).

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

Nagasaki averages a daytime maximum of 12°C (54°F) in January, with overnight lows close to 7°C (45°F).

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

Not particularly. Nagasaki averages just 91 mm (3.6 in) of rain in January, making it a mostly dry month for Nagasaki, Japan.

Is January a Good Time to Visit Nagasaki, Japan?

In our opinion, January may not be the ideal time to visit Nagasaki, Japan due to the typically unpleasant weather in Nagasaki.

On average, the best time to visit Nagasaki, Japan is in October with generally pleasant weather in Nagasaki. On the other hand, the months of 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.

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