Our verdict
The best time to visit Nagasaki is November
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.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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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:
| Season | Months |
|---|---|
| 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:
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
of pure sunshine
of showers or rain
What to pack: If you’re heading to Nagasaki in January, make sure you pack a warm jacket or coat.
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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
of pure sunshine
of showers or rain
What to pack: If you’re heading to Nagasaki in February, make sure you pack a warm jacket or coat.
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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
of pure sunshine
of showers or rain
What to pack: If you’re heading to Nagasaki in March, make sure you pack a warm jacket or coat.
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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
of pure sunshine
of showers or rain
What to pack: If you’re heading to Nagasaki in April, make sure you pack a light jumper or hoodie.
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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
of pure sunshine
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.
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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
of pure sunshine
of showers or rain
What to pack: If you’re heading to Nagasaki in June, make sure you pack t-shirts and light clothing.
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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
of pure sunshine
of showers or rain
What to pack: If you’re heading to Nagasaki in July, make sure you pack t-shirts and light clothing.
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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
of pure sunshine
of showers or rain
What to pack: If you’re heading to Nagasaki in August, make sure you pack t-shirts and light clothing.
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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
of pure sunshine
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
of pure sunshine
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.
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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
of pure sunshine
of showers or rain
What to pack: If you’re heading to Nagasaki in November, make sure you pack a light jumper or hoodie.
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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
of pure sunshine
of showers or rain
What to pack: If you’re heading to Nagasaki in December, make sure you pack a warm jacket or coat.
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