Spring (March–May): Average 12.8–19.9°C, mild climate but with relatively high rainfall, especially in March and April. Common activities: Cherry blossom viewing, coastal walks, visiting historical sites. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Summer (June–August): Average 23.6–29.2°C, hot and humid with relatively high rainfall. Common activities: Beach activities, water sports, enjoying local cuisine. Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
Autumn (September–November): Average 16.0–27.1°C, comfortable and pleasant climate with less rainfall. Common activities: Hiking, visiting museums, enjoying autumn cuisine. Recommended clothing: Light jacket, long-sleeved or short-sleeved shirt.
Winter (December–February): Average 7.6–9.0°C, cold climate with less rainfall. Common activities: Onsen (hot springs), visiting indoor attractions, enjoying hot pot and other winter dishes. Recommended clothing: Warm jacket, sweater, scarf, hat.
Nagasaki City climatological average
Annual average temperature: approx. 18°C / Annual rainfall: approx. 2007 mm / Summer humidity: 70%–80% / Rainiest month: June
Nagasaki City monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
7.6°C
93
February
8.8°C
86.3
March
12.8°C
212
April
17°C
194.7
May
19.9°C
207
June
23.6°C
324.7
July
28.1°C
282.3
August
29.2°C
243.7
September
27.1°C
165.3
October
20.8°C
69
November
16°C
85.7
December
9°C
43.3
Nagasaki City weather for the next seven days
10/19
Sunday
Moderate rain
26.3°C/21.4°C
10/20
Monday
Partly Cloudy
24.3°C/19.3°C
10/21
Tuesday
Patchy rain nearby
21.3°C/17.8°C
10/22
Wednesday
Partly Cloudy
19.9°C/17.2°C
10/23
Thursday
Sunny
21.4°C/15.4°C
10/24
Friday
Partly Cloudy
21.6°C/17.6°C
10/25
Saturday
Patchy rain nearby
18.9°C/16.9°C
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