🇯🇵 Weather in Nagasaki
Current Weather in Nagasaki
23°C
Feels like 19°C. Cloudy.
🌬️ 4 km/h ESE
💧 89% Humidity
🧭 1012 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 0.0
🌡️ Dew Point: 21°C
🌅 Sunrise: 05:16 AM
🌇 Sunset: 07:32 PM
Map Overlays:
Hourly Forecast for Nagasaki
23:00
23°
27%
00:00
23°
66%
01:00
23°
47%
02:00
23°
80%
03:00
22°
93%
04:00
22°
94%
05:00
22°
86%
06:00
22°
53%
07:00
22°
38%
08:00
23°
19%
09:00
24°
16%
10:00
24°
15%
11:00
25°
11%
12:00
26°
10%
13:00
26°
22%
14:00
25°
20%
15:00
24°
34%
16:00
24°
54%
17:00
24°
42%
18:00
24°
36%
19:00
24°
33%
20:00
24°
41%
21:00
24°
63%
22:00
24°
76%
14-Day Forecast for Nagasaki
Thu, Jul 02
Partly Cloudy
25° /
23°
Fri, Jul 03
Mist
26° /
22°
Sat, Jul 04
Light rain shower
24° /
23°
Sun, Jul 05
Patchy rain nearby
26° /
24°
Mon, Jul 06
Sunny
27° /
24°
Tue, Jul 07
Sunny
27° /
24°
Wed, Jul 08
Sunny
28° /
23°
Thu, Jul 09
Sunny
29° /
23°
Fri, Jul 10
Sunny
29° /
24°
Sat, Jul 11
Sunny
30° /
25°
Sun, Jul 12
Partly Cloudy
29° /
26°
Mon, Jul 13
Cloudy
29° /
25°
Tue, Jul 14
Partly Cloudy
28° /
25°
Wed, Jul 15
Light rain shower
27° /
25°
Additional Forecasts for Nagasaki
Marine Forecast
🌊 Sig. Wave Height
1.3 m
🌡️ Water Temp
19.7°C
〰️ Swell Height
m
🧭 Swell Direction
SW
⏱️ Swell
Period 5.1s
Tide Forecast
🔽 LOW2026-07-02 03:20 (1.05m)
🔼 HIGH2026-07-02 09:02 (2.49m)
🔽 LOW2026-07-02 15:28 (0.35m)
🔼 HIGH2026-07-02 22:00 (2.61m)
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 133.0
μg/m³
O₃ (Ozone) 102.0
μg/m³
NO₂ (Nitrogen Dioxide) 8.0 μg/m³
SO₂ (Sulphur Dioxide) 5.1
μg/m³
PM2.5 (Fine particles) 14.5 μg/m³
PM10 (Coarse particles) 16.6 μg/m³
Local Sports Events
Historical Weather
Weather Forecasts for Other Cities in Japan
Learn More about Weather
FAQ — Weather in Nagasaki
Common questions about this page — answers customized for the data shown above.
The current weather in Nagasaki is cloudy with a temperature of 23°C (feels like 19°C). Humidity is at 89% and wind speed is 4 km/h. Browse weather for other cities for comparison.
Tomorrow's forecast for Nagasaki shows mist with a high of 26°C and a low of 22°C. There is a 89% chance of rain. Tomorrow’s sunrise and sunset times for Nagasaki are also available.
Over the next 7 days in Nagasaki, temperatures are forecast to range from a low of 22°C to a high of 28°C. The 7-day forecast table above shows day-by-day conditions, precipitation probability and hourly breakdowns. For weather in nearby cities, see Japan city pages.
Based on the latest forecast, rain is likely in Nagasaki on Thursday, Friday, Saturday, Sunday, Monday, and Tuesday (50%+ chance of precipitation). The hourly forecast above gives more precise timing for any showers expected in the next 24 hours.
Wednesday is forecast to be the warmest day in Nagasaki this week, with a high of 28°C and sunny conditions expected.
Nagasaki sits at approximately 32.8° north latitude, which generally produces a temperate or subtropical climate, with warm summers, mild winters and moderate seasonal variation. Local geography (coast vs. inland, altitude, prevailing winds) shapes the specific weather patterns shown in the forecast above.
Climatically, the best time to visit Nagasaki is generally April to June and September to October (Northern Hemisphere spring and autumn) — outside the extremes of summer heat and winter chill. Exact timing depends on what you're after — fewer crowds, specific events, lowest rainfall, or warmest weather. Check the forecast above before planning a short trip.
In the Northern Hemisphere, summer falls in June–August and winter in December–February. Spring runs March–May and autumn runs September–November. Nagasaki follows this Northern/Southern Hemisphere pattern based on its latitude. See the sun page for exact daylight hours through the year.