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Weather Forecast for Karuizawa

Nagano, Japan

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Patchy rain nearby

Current Weather - Karuizawa: 21°C

Nagano, Japan

Patchy rain nearby

Feels like 21°C

Wind

9 km/h NW

Humidity

73%

Pressure

1016 mb

UV Index

5

Visibility

10 km
Patchy rain nearby

Patchy rain nearby

Thursday, September 24, 2026

High

24°C

Low

15°C

Rain Chance

69%

Hourly Forecast

Fog 15°C
04:00
Fog 15°C
05:00
Fog 15°C
06:00
Mist 16°C
07:00
Overcast 17°C
08:00
Overcast 19°C
09:00
Patchy rain nearby 21°C
10:00
Patchy rain nearby 22°C
11:00
Patchy rain nearby 23°C
12:00
Patchy rain nearby 24°C
13:00
Patchy rain nearby 24°C
14:00
Patchy rain nearby 23°C
15:00
Patchy rain nearby 22°C
16:00
Patchy rain nearby 20°C
17:00
Patchy rain nearby 17°C
18:00
Overcast 16°C
19:00
Mist 16°C
20:00
Mist 15°C
21:00
Mist 15°C
22:00
Mist 15°C
23:00
Sep 25

Day Statistics

Maximum Wind

10 km/h

Humidity

85%

Precipitation

1 mm

UV Index

7

Visibility

6 km

Rain Chance

69%

Snow Chance

0%

Sun & Moon

Sunrise

05:35 AM

Sunset

05:40 PM

Moonrise

04:28 PM

Moonset

03:01 AM

Moon Phase

Full Moon

Moon Illumination

99%

Air Quality

PM2.5

7.4

μg/m³

PM10

9.2

μg/m³

NO₂

9.4

μg/m³

O₃

64.6

μg/m³

SO₂

3.7

μg/m³

CO

162.8

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Solar Radiation Data

Shortwave Radiation

541.96

Diffuse Radiation

212.45

DNI

0

GTI

0