The month in detail
What to expect in June
Summer in Nagasaki brings pleasant temperatures (79°F) and long sunny days (4.2h of sunshine). Expect rain on 40% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if September (8.0/10) remains theoretically better.
June ranks 4 out of 12 months in Nagasaki. Compared to May: +5°F daytime, 11 pts more rainy days, −1.9h of sun per day.
This month's conditions
What it's like in June
UV index
6 · moderate
protect during midday hours
Feels like
muggy at times
20°
Sea
24°C
pleasant for swimming
Daylight
14.1h of daylight
Air quality
fair
AQI 40
Compare
Is June the right month?
The best month in Nagasaki is September (8.0/10), 0.4 pt higher than June.
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 June
If June 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 June?
In June, the sea averages 74°F in Nagasaki: pleasant for swimming. Swimming is pleasant without a wetsuit.
Do you need sun protection in Nagasaki in June?
The average UV index reaches 6 in June in Nagasaki (moderate), with about 14.1h of daylight. Protect during midday hours.