The month in detail
What to expect in January
In January, Nagasaki sees 52°F during the day with 3.3h of sunshine per day. Rain risk remains low (19% of days), leaving good room for outdoor activities.
January ranks 11 out of 12 months in Nagasaki. Compared to December: −2°F daytime.
This month's conditions
What it's like in January
UV index
3 · moderate
protect during midday hours
Feels like
dry air
2°
Sea
15°C
cold, for the brave
Daylight
10.1h of daylight
Air quality
good
AQI 27
Compare
Is January the right month?
The best month in Nagasaki is September (8.0/10), 3.8 pts higher than January.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Nagasaki
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Nagasaki
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach trip.
Country · Japan
🗣️LanguageJapanese
💶CurrencyYen japonais (¥)
🚗DrivingLeft-hand
🛡️Safety ⓘSafe · 2/5
💰Cost of living ⓘModerate · 3/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trend ⓘStable
🔥Hottest monthAugust · 88°F
❄️Coolest monthJanuary · 52°F
🌧️Rainiest month ⓘJuly · 43%
🏖️ Beach trip
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
Explore
Other destinations in January
If January doesn't convince you for this destination, compare with others.
Location
Where is Nagasaki ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
JapanTemperate oceanic climate with a 8.0 → 4.1 gap between best and worst month. 10 years of ERA5 data to choose by project.
32.75°N · 129.88°E
Questions
Frequently asked questions
What is the best time to visit Nagasaki?
September is the best month with 82°F highs, 73°F lows, 5.7h of sunshine and 36.0% rainy days. The months of September & October offer comparable conditions.
How many hours of sunshine does Nagasaki get in September?
Nagasaki averages 5.7 sunshine hours per day in September. It is the sunniest month with a climate score of 7.5/10.
What is the rainiest month in Nagasaki?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Nagasaki in September?
In September, overnight lows reach 73°F, while afternoon highs average 82°F.
Is Nagasaki good in winter?
In winter (December-February), Nagasaki scores 4.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains September with a score of 7.5/10.
When should you avoid Nagasaki?
January is the most difficult month to visit Nagasaki, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Nagasaki in January?
In January, the sea averages 60°F in Nagasaki: cold, for the brave. Best left to hardened swimmers or those with a wetsuit.
Do you need sun protection in Nagasaki in January?
The average UV index reaches 3 in January in Nagasaki (moderate), with about 10.1h of daylight. Protect during midday hours.