Nagano, Japan Weather

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

Current conditions

Updated:
17°C
62.6°F
°C °F

Condition: Mainly Clear

Pressure: 973 hPa

Feel like: 18 °C

Temperature: 17°C

Cloud: 20%

Humidity: 79%

Wind: W - 2 km/h

Visibility: 0.6 km

Weather forecast

Sun
14 Jun
18°C / 26°C
Drizzle
Mon
15 Jun
14°C / 24°C
Partly Cloudy
Tue
16 Jun
13°C / 27°C
Drizzle
Wed
17 Jun
15°C / 28°C
Overcast
Thu
18 Jun
16°C / 26°C
Mainly Clear
Hourly forecast today:
17:00 PM
13° / 17°
13° / 17°
Mainly Clear
79% 8 km/h
18:00 PM
13° / 16°
13° / 16°
Clear Sky
80% 9 km/h
19:00 PM
13° / 16°
13° / 16°
Clear Sky
81% 11 km/h
20:00 PM
13° / 16°
13° / 16°
Clear Sky
82% 15 km/h
21:00 PM
13° / 17°
13° / 17°
Clear Sky
79% 16 km/h
22:00 PM
14° / 19°
14° / 19°
Clear Sky
72% 17 km/h
23:00 PM
14° / 21°
14° / 21°
Mainly Clear
65% 21 km/h
00:00 AM
15° / 23°
15° / 23°
Partly Cloudy
62% 21 km/h
01:00 AM
15° / 24°
15° / 24°
Partly Cloudy
57% 21 km/h
02:00 AM
15° / 25°
15° / 25°
Partly Cloudy
52% 19 km/h
03:00 AM
14° / 26°
14° / 26°
Overcast
48% 17 km/h

30 Day Averages and Extremes

  • Average high 24.27°C
  • Average low 15.4°C
  • Hottest day 31°C (31 May 2026)
  • Coldest day 0°C (27 June 2026)
  • Average humidity 69.97%
  • Days with precipitation 26 days
  • Highest precipitation 69 mm (02 June 2026)

Yesterday's Data

  • Max: 26°C
  • Min: 15°C
  • Total Precipitation: 0 mm

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

Temperature and possibility of rain in Nagano in the coming days

Rainfall in Nagano in the coming days

Nagano Climate Summary

Nagano features a Humid continental, no dry season, warm summer (Köppen classification: Dfb), with an average annual temperature of 11.13ºC (52.03ºF), which is about -4.06% lower than the national average for Japan. Annually, the city experiences approximately 78.61 millimeters (3.09 inches) of rainfall, spread across 162.09 rainy days, accounting for 44.41% of the year.

Longitude 36.6485258
Latitude 138.1950371
Yearly high temperature 14.42ºC (57.96ºF)
Yearly low temperature 5.16ºC (41.29ºF)
Hottest month August 28.16ºC (82.69ºF)
Coldest month February -6.3ºC (20.66ºF)
Yearly precip 78.61mm (3.09in)
Days with rainfall 162.09 days (44.41%)
Driest month November (80.74%)
Wettest month July (82.97%)

Weather averages by month

Month High / Low (°C) Rain
January 0.5° / -6.67° 14.09 days
February 1.66° / -6.3° 11.27 days
March 6.41° / -2.47° 12.27 days
April 12.66° / 2.44° 10.27 days
May 19.78° / 7.86° 10.18 days
June 22.91° / 11.87° 14.82 days
July 26.52° / 17.0° 21.18 days
August 28.16° / 17.88° 19.55 days
September 23.27° / 13.72° 12.91 days
October 16.93° / 7.43° 10.09 days
November 10.58° / 2.39° 10.82 days
December 3.7° / -3.22° 14.64 days

Nagano's weather

Frequently asked questions

1. What is the hottest month in Nagano?

August has the highest average monthly temperature (daily mean of 28.16ºC) and February are the coolest (daily mean of -6.3ºC).

2. What should I wear in Nagano today?

For today's very hot weather in Nagano, with the high temperatures above 27ºC (80.6ºF), consider wearing:
- Thin, moisture-wicking socks
- Open-toed sandals or light sneakers
- Breathable shorts or skirts
- Wide-brimmed sun hat

Temperature

Early
10°C / 26°C
Morning
13°C / 22°C
Afternoon
13°C / 17°C
Evening
13°C / 17°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 503
  • CO 262
  • NH3 0
  • NO2 10
  • O3 37
  • PM10 12
  • PM25 11
  • SO2 0
  • CH4 1,497

Sunrise / Sunset

19:28
10:06