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Best time to visit Nagasaki, Japan

Our verdict

The best time to visit Nagasaki is November

Are you looking for top-secret information about when to visit Nagasaki? Look no further! November is the best time to go to Nagasaki due to the excellent all-round climate conditions, and it’s not likely to be at its busiest as it’s not during the height of the peak travel season.

In summer, the average maximum temperature is around 29℃ (85℉), but temperatures can sometimes reach as high as 31℃ (87℉) on the hottest days of the year. The weather at night in the winter, which is around January-time, can get down to a minimum of 4℃ (39℉).

The days are longest in Nagasaki in August, so if you want to see the sights during the day when the sun is up for the longest time, it’s best to visit around that time of year. To stay dry, avoid travelling to Nagasaki in July – It’s the wettest month of the year.

Keep reading to find all the info you need (and none of the stuff you don’t) about the best times to go to Nagasaki. By the time you get to the bottom, you’ll be ready to start booking your trip.

Warmest month

August

Least rainfall

January

Most daylight

August

Nagasaki seasons

Before you continue, it’s important to know when the seasons are in Nagasaki as they might be different to yours depending on where in the world you’re travelling from. Nagasaki is in the Northern Hemisphere, so the seasons fall during these months:

SeasonMonths
Summer June to August
Autumn/fall September to November
Winter December to February
Spring March to May

Average temperatures in Nagasaki

If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Nagasaki for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.

Nagasaki climate by month

If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Nagasaki for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.

Jump to:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

Nagasaki in January

  • Average temperature: 9℃ (47℉)
  • Average high temperature: 10℃ (50℉)
  • Average low temperature: 7℃ (44℉)
  • Average humidity: 70%
  • Average sunny days: 10 days
  • Average rainfall: 51mm (2") over 15 days
  • Average snow days: 2 days
10 days
of pure sunshine
15 days
of showers or rain

What to pack: If you’re heading to Nagasaki in January, make sure you pack a warm jacket or coat.


Nagasaki in February

  • Average temperature: 9℃ (49℉)
  • Average high temperature: 11℃ (52℉)
  • Average low temperature: 7℃ (45℉)
  • Average humidity: 71%
  • Average sunny days: 11 days
  • Average rainfall: 79mm (3") over 14 days
  • Average snow days: 1 days
11 days
of pure sunshine
14 days
of showers or rain

What to pack: If you’re heading to Nagasaki in February, make sure you pack a warm jacket or coat.


Nagasaki in March

  • Average temperature: 12℃ (53℉)
  • Average high temperature: 14℃ (57℉)
  • Average low temperature: 10℃ (49℉)
  • Average humidity: 70%
  • Average sunny days: 16 days
  • Average rainfall: 89mm (4") over 14 days
16 days
of pure sunshine
14 days
of showers or rain

What to pack: If you’re heading to Nagasaki in March, make sure you pack a warm jacket or coat.


Nagasaki in April

  • Average temperature: 16℃ (60℉)
  • Average high temperature: 18℃ (64℉)
  • Average low temperature: 13℃ (56℉)
  • Average humidity: 72%
  • Average sunny days: 15 days
  • Average rainfall: 100mm (4") over 14 days
15 days
of pure sunshine
14 days
of showers or rain

What to pack: If you’re heading to Nagasaki in April, make sure you pack a light jumper or hoodie.


Nagasaki in May

  • Average temperature: 19℃ (67℉)
  • Average high temperature: 22℃ (71℉)
  • Average low temperature: 17℃ (63℉)
  • Average humidity: 76%
  • Average sunny days: 18 days
  • Average rainfall: 105mm (4") over 11 days
18 days
of pure sunshine
11 days
of showers or rain

What to pack: If you’re heading to Nagasaki in May, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.


Nagasaki in June

  • Average temperature: 22℃ (72℉)
  • Average high temperature: 24℃ (75℉)
  • Average low temperature: 21℃ (69℉)
  • Average humidity: 84%
  • Average sunny days: 10 days
  • Average rainfall: 225mm (9") over 19 days
10 days
of pure sunshine
19 days
of showers or rain

What to pack: If you’re heading to Nagasaki in June, make sure you pack t-shirts and light clothing.


Nagasaki in July

  • Average temperature: 26℃ (79℉)
  • Average high temperature: 28℃ (82℉)
  • Average low temperature: 24℃ (76℉)
  • Average humidity: 86%
  • Average sunny days: 8 days
  • Average rainfall: 236mm (9") over 21 days
8 days
of pure sunshine
21 days
of showers or rain

What to pack: If you’re heading to Nagasaki in July, make sure you pack t-shirts and light clothing.


Nagasaki in August

  • Average temperature: 28℃ (81℉)
  • Average high temperature: 29℃ (85℉)
  • Average low temperature: 26℃ (78℉)
  • Average humidity: 81%
  • Average sunny days: 9 days
  • Average rainfall: 181mm (7") over 20 days
9 days
of pure sunshine
20 days
of showers or rain

What to pack: If you’re heading to Nagasaki in August, make sure you pack t-shirts and light clothing.


Nagasaki in September

  • Average temperature: 25℃ (76℉)
  • Average high temperature: 27℃ (80℉)
  • Average low temperature: 23℃ (73℉)
  • Average humidity: 77%
  • Average sunny days: 13 days
  • Average rainfall: 117mm (5") over 16 days
13 days
of pure sunshine
16 days
of showers or rain

What to pack: If you’re heading to Nagasaki in September, make sure you pack t-shirts and light clothing.

Nagasaki in October

  • Average temperature: 21℃ (69℉)
  • Average high temperature: 23℃ (73℉)
  • Average low temperature: 19℃ (66℉)
  • Average humidity: 72%
  • Average sunny days: 19 days
  • Average rainfall: 76mm (3") over 10 days
19 days
of pure sunshine
10 days
of showers or rain

What to pack: If you’re heading to Nagasaki in October, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.


Nagasaki in November

  • Average temperature: 16℃ (60℉)
  • Average high temperature: 18℃ (64℉)
  • Average low temperature: 14℃ (57℉)
  • Average humidity: 71%
  • Average sunny days: 15 days
  • Average rainfall: 73mm (3") over 13 days
15 days
of pure sunshine
13 days
of showers or rain

What to pack: If you’re heading to Nagasaki in November, make sure you pack a light jumper or hoodie.


Nagasaki in December

  • Average temperature: 11℃ (51℉)
  • Average high temperature: 12℃ (54℉)
  • Average low temperature: 9℃ (48℉)
  • Average humidity: 71%
  • Average sunny days: 10 days
  • Average rainfall: 79mm (3") over 17 days
10 days
of pure sunshine
17 days
of showers or rain

What to pack: If you’re heading to Nagasaki in December, make sure you pack a warm jacket or coat.


Top FAQs

The hottest month of the year in Nagasaki is usually August, where temperatures tend to rise to around 29℃ (85℉) in the middle of the day or early afternoon.
The month with the least amount of rain in Nagasaki is generally around January. The dry season often coincides with cooler weather, so you should check the temperatures in January first to make sure it’s still a good time to go.
The rainiest time of year in Nagasaki is generally around July, although the wetter season can sometimes extend a few months either side of July too.
If you want to get the most out of your time visiting Nagasaki, or if you're just afraid of the dark, the days in August are usually the longest between sunrise and sunset.

Nagasaki map