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:
24°C
75.2°F
°C °F

Condition: Drizzle

Pressure: 1,004 hPa

Feel like: 28 °C

Temperature: 24°C

Cloud: 87%

Humidity: 97%

Wind: SW - 12 km/h

Visibility: 6.88 km

Weather forecast

Sun
21 Jun
20°C / 25°C
Slight Thunderstorm
Mon
22 Jun
20°C / 22°C
Thunderstorm With Slight
Tue
23 Jun
21°C / 24°C
Thunderstorm Heavy Hail
Wed
24 Jun
21°C / 23°C
Thunderstorm With Slight
Thu
25 Jun
21°C / 24°C
Thunderstorm With Slight
Hourly forecast today:
07:00 AM
24° / 24°
24° / 24°
Drizzle
97% 66 km/h
08:00 AM
24° / 24°
24° / 24°
Moderate Drizzle
98% 66 km/h
09:00 AM
23° / 24°
23° / 24°
Slight Rain
98% 65 km/h
10:00 AM
23° / 24°
23° / 24°
Drizzle
98% 54 km/h
11:00 AM
23° / 24°
23° / 24°
Moderate Rain
98% 55 km/h
12:00 PM
23° / 23°
23° / 23°
Slight Rain
99% 48 km/h
13:00 PM
23° / 23°
23° / 23°
Slight Rain
99% 39 km/h
14:00 PM
23° / 23°
23° / 23°
Moderate Drizzle
99% 38 km/h
15:00 PM
22° / 23°
22° / 23°
Drizzle
98% 34 km/h
16:00 PM
21° / 22°
21° / 22°
Mainly Clear
93% 32 km/h
17:00 PM
21° / 22°
21° / 22°
Partly Cloudy
93% 30 km/h

30 Day Averages and Extremes

  • Average high 24.07°C
  • Average low 19.63°C
  • Hottest day 28°C (06 June 2026)
  • Coldest day 0°C (03 July 2026)
  • Average humidity 83.07%
  • Days with precipitation 27 days
  • Highest precipitation 92 mm (18 June 2026)

Yesterday's Data

  • Max: 25°C
  • Min: 23°C
  • Total Precipitation: 16 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 very hot weather in Nagasaki, with the high temperatures above 25ºC (77.0ºF), consider wearing:
- Wide-brimmed sun hat
- Loose and airy fabrics like linen or cotton
- Thin, moisture-wicking socks
- Breathable shorts or skirts

Temperature

Early
24°C / 25°C
Morning
23°C / 24°C
Afternoon
22°C / 23°C
Evening
20°C / 22°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 443
  • CO 105
  • NH3 0
  • NO2 1
  • O3 48
  • PM10 8
  • PM25 6
  • SO2 1
  • CH4 1,312

Sunrise / Sunset

20:12
10:31