Nagano weather — 10-day forecast

Temperature, rain, wind and feels-like in Nagano, hour by hour and over 10 days, with the seasonal normal for context.

Now

Reading from 10:00 · DWD ICON global model

26 °C

Light drizzle

Feels like 30 °C

3.3 km/hforce 1

Next 12 h

  • 1026°44 %
  • 1126°89 %
  • 1227°
  • 1327°43 %
  • 1426°93 %
  • 1525°93 %
  • 1625°
  • 1725°
  • 1824°46 %
  • 18:47Sunset
  • 1923°74 %
  • 2023°87 %
  • 2122°92 %
  • 2222°92 %

27°12:00 22°22:00

Humidity
81 %
Dew point
23 °C
Gusts
11.6 km/h
Clouds
100 %
Pressure
1,010 hPa ↓
UV
6 · high
Storm
possible

Grid point 5.9 km away · 13.0 km grid · elevation 674 m

Air quality

The European air-quality index for the city, and the pollutants that set it.

Reading from 09:00
38
Fair

Index set by Ozone

Ozone
95.2µg/m³
PM2.5
6.0µg/m³
PM10
6.2µg/m³
Nitrogen dioxide
1.3µg/m³
Sulphur dioxide
3.2µg/m³
Carbon monoxide
122.0µg/m³
Dust (AOD)
0.01

Generated using Copernicus Atmosphere Monitoring Service information

Hour by hour

Step-by-step detail: temperature, wind, cloud cover and ultraviolet.

Estimated from a deterministic model, not an ensemble probability.
°C

10 days

Each day's extremes and the chance of rain, out to the end of the run.

19° → 31°

Rain probability (> 1 mm): 50 ECMWF ensemble members.

  • Today

    Thunderstorm100 %

    27°

    22°

  • Sun

    Thunderstorm90 %

    26°

    21°

  • Mon

    Mainly clear48 %

    30°

    20°

  • Tue

    Partly cloudy64 %

    28°

    19°

  • Wed

    Partly cloudy86 %

    27°

    19°

  • Thu

    Rain24 mm

    30°

    20°

  • Fri

    Mainly clear

    31°

    22°

  • Sat

    Thunderstorm3 mm

    27°

    21°

  • Sun

    Partly cloudy

    29°

    20°

  • Mon

    Light drizzle1 mm

    26°

    20°

Sun and UV

Sunrise, sunset, day length and ultraviolet intensity.

Max UV7high
Sunrise
04:59
Daylight
13 h 48
Sunset
18:47

Radiation · 13.6 MJ/m²

Sea state

Sea state at the marine grid point closest to the city.

0.1 mperiod 2 s 182°

Significant height: the mean of the highest third of waves. Individual waves reach about twice it.

Data: ECMWF

Today in Nagano the mean temperature will be 23.9 °C — +1.1 °C against the normal for 8 August, measured from 1940 to 2026. (1,290 obs.)

Nagano climate — normals and trends

Nearby cities

The climate around Nagano