Nagasaki, Japan Weather

  1. Nagasaki, Japan Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Nagasaki over the next 12 hours
  7. Temperature and possibility of rain in Nagasaki in the coming days
  8. Rainfall in Nagasaki in the coming days
  9. Nagasaki Weather Summary
  10. Weather averages by month
  11. Nagasaki's weather
  12. Frequently asked questions
  13. Comments
Nagasaki, Weather
(Photo by Sora Sagano on Unsplash)

Current conditions

Updated:
18°C
64.4°F
°C °F

Condition: Overcast

Pressure: 1,019 hPa

Feel like: 15 °C

Temperature: 18°C

Cloud: 100%

Humidity: 59%

Wind: ENE - 16 km/h

Visibility: 24.14 km

Weather forecast

Wed
12 Nov
16°C / 19°C
Slight Rain
Thu
13 Nov
13°C / 20°C
Overcast
Fri
14 Nov
12°C / 21°C
Overcast
Sat
15 Nov
13°C / 17°C
Slight Rain
Sun
16 Nov
8°C / 14°C
Overcast
Hourly forecast today:
22:00 PM
9° / 18°
9° / 18°
Overcast
59% 23 km/h
23:00 PM
10° / 18°
10° / 18°
Overcast
59% 24 km/h
00:00 AM
10° / 18°
10° / 18°
Overcast
60% 24 km/h
01:00 AM
10° / 18°
10° / 18°
Overcast
60% 23 km/h
02:00 AM
11° / 18°
11° / 18°
Overcast
61% 21 km/h
03:00 AM
11° / 19°
11° / 19°
Overcast
61% 20 km/h
04:00 AM
11° / 19°
11° / 19°
Overcast
61% 19 km/h
05:00 AM
11° / 19°
11° / 19°
Overcast
61% 19 km/h
06:00 AM
11° / 19°
11° / 19°
Overcast
61% 18 km/h
07:00 AM
12° / 19°
12° / 19°
Overcast
62% 17 km/h
08:00 AM
12° / 19°
12° / 19°
Overcast
63% 17 km/h

30 Day Averages and Extremes

  • Average high 19.03°C
  • Average low 13.4°C
  • Hottest day 22°C (23 October 2025)
  • Coldest day 7°C (17 November 2025)
  • Average humidity 67.4%
  • Days with precipitation 17 days
  • Highest precipitation 52 mm (12 November 2025)

Yesterday's Data

  • Max: 19°C
  • Min: 15°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in Nagasaki over the next 12 hours

Temperature and possibility of rain in Nagasaki in the coming days

Rainfall in Nagasaki in the coming days

Nagasaki Climate Summary

Nagasaki features a Humid subtropical, no dry season (Köppen classification: Cfa), with an average annual temperature of 17.96ºC (64.33ºF), which is about 2.77% higher than the national average for Japan. Annually, the city experiences approximately 127.61 millimeters (5.02 inches) of rainfall, spread across 140.16 rainy days, accounting for 38.4% of the year.

Longitude 32.7503334
Latitude 129.8778888
Yearly high temperature 19.42ºC (66.96ºF)
Yearly low temperature 15.6ºC (60.08ºF)
Hottest month August 29.52ºC (85.14ºF)
Coldest month December 8.47ºC (47.25ºF)
Yearly precip 127.61mm (5.02in)
Days with rainfall 140.16 days (38.4%)
Driest month January (70.01%)
Wettest month July (86.33%)

Weather averages by month

Month High / Low (°C) Rain
January 9.87° / 6.63° 9.09 days
February 10.87° / 7.11° 9.27 days
March 13.79° / 9.46° 9.27 days
April 17.6° / 13.08° 10.36 days
May 21.57° / 17.12° 9.18 days
June 24.03° / 20.5° 17.09 days
July 27.35° / 23.97° 19.18 days
August 29.52° / 25.73° 16.91 days
September 26.7° / 22.86° 14.36 days
October 22.47° / 18.42° 6.91 days
November 17.44° / 13.82° 8.36 days
December 11.87° / 8.47° 10.18 days

Nagasaki's weather

Frequently asked questions

1. What is the hottest month in Nagasaki?

August has the highest average monthly temperature (daily mean of 29.52ºC) and December are the coolest (daily mean of 8.47ºC).

2. What should I wear in Nagasaki today?

For today's mild weather in Nagasaki, with temperatures between 16ºC to 19ºC (60.8ºF to 66.2ºF), consider wearing:
- Cotton socks
- Sun hat (if spending time outdoors)
- Casual sneakers or loafers
- Long-sleeve shirt or blouse

Temperature

Early
7°C / 17°C
Morning
10°C / 19°C
Afternoon
8°C / 18°C
Evening
9°C / 18°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 0
  • CO 0
  • NH3 0
  • NO2 0
  • O3 0
  • PM10 0
  • PM25 0
  • SO2 0
  • CH4 0

Sunrise / Sunset

21:47
08:21