Weather forecast for todayKaruizawa, Japan

Weather forecast for today

Current condition 03:24 JST

  • 16°C
  • Feels like:
    16°C
Mostly Cloudy
Mostly Cloudy
  • Precipitation: 0mm
  • Wind: 3km/hN 0°
  • Humidity: 89%
  • Dewpoint: 14°C
  • Pressure: 1015.58mbar
  • Visibility: 3.7km
  • UV index: 0
  • ▼
Currently, shifting cloud patterns are maintaining a mostly cloudy sky.
The temperature is a comfortable 16°C. The current temperature is relatively far from the maximum of 25°C predicted for today.

Wednesday 21. Oct 2026

  • 25°C
  • 10°C
PM Showers
PM Showers
  • Precip. probability: 45%
  • Precipitation: 1mm
  • Wind: 18km/hWSW 240°
  • Humidity: 63%
  • UV index: 5
  • Sunrise: 05:57 JST
  • Sunset: 17:02 JST
  • ▼
Today, in Karuizawa, expect afternoon showers to move through periodically.
Minimal precipitation is anticipated. A notable temperature range, reaching a high of a warm 25°C and a low of a crisp 10°C, is predicted.
A forecast high of 25°C brings conditions more familiar to September's average than October's.
Sunrise will be at 05:57 and sunset at 17:02; the daylight will last for 11h and 5min.

Hourly overview

Hourly temperatures

Warmest period: 12h - 14h 24°C.
Coldest hour: 6h 15°C.

Chance of precipitation

Highest chance: 18h 46%.

Hourly weather forecast

  • 4h
  • 16°C
  • Feels like:
    16°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0mm
  • Wind: 3km/hSW 229°
  • Humidity: 89%
  • Pressure: 1015mbar
  • Visibility: 2km
  • UV index: 0
  • ▼
Sunrise: 05:57
  • 6h
  • 15°C
  • Feels like:
    15°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 4km/hWSW 257°
  • Humidity: 90%
  • Pressure: 1014mbar
  • Visibility: 5km
  • UV index: 0
  • ▼
  • 8h
  • 18°C
  • Feels like:
    18°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0mm
  • Wind: 7km/hSW 226°
  • Humidity: 86%
  • Pressure: 1013mbar
  • Visibility: 14km
  • UV index: 1
  • ▼
  • 10h
  • 21°C
  • Feels like:
    21°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0mm
  • Wind: 11km/hSW 230°
  • Humidity: 66%
  • Pressure: 1011mbar
  • Visibility: 16km
  • UV index: 4
  • ▼
  • 12h
  • 24°C
  • Feels like:
    24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0mm
  • Wind: 14km/hWSW 238°
  • Humidity: 54%
  • Pressure: 1009mbar
  • Visibility: 16km
  • UV index: 5
  • ▼
  • 14h
  • 24°C
  • Feels like:
    24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0mm
  • Wind: 18km/hWSW 244°
  • Humidity: 50%
  • Pressure: 1008mbar
  • Visibility: 16km
  • UV index: 3
  • ▼
  • 16h
  • 23°C
  • Feels like:
    23°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0mm
  • Wind: 18km/hWSW 244°
  • Humidity: 52%
  • Pressure: 1008mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Sunset: 17:02
  • 18h
  • 20°C
  • Feels like:
    20°C
Showers
Showers
  • Precip. probability: 46%
  • Precipitation: 1mm
  • Wind: 16km/hW 264°
  • Humidity: 63%
  • Pressure: 1009mbar
  • Visibility: 11km
  • UV index: 0
  • ▼
  • 20h
  • 18°C
  • Feels like:
    18°C
Showers
Showers
  • Precip. probability: 45%
  • Precipitation: 1mm
  • Wind: 12km/hWNW 284°
  • Humidity: 79%
  • Pressure: 1010mbar
  • Visibility: 11km
  • UV index: 0
  • ▼
  • 22h
  • 16°C
  • Feels like:
    16°C
Showers
Showers
  • Precip. probability: 44%
  • Precipitation: 1mm
  • Wind: 10km/hWNW 289°
  • Humidity: 86%
  • Pressure: 1011mbar
  • Visibility: 10km
  • UV index: 0
  • ▼
Today, in Karuizawa, a combination of overcast, wet and bright weather is expected.
With minimal precipitation of 1mm, rain is predicted at 5h, 17h, 18h, and from 20h to 23h.
The temperature will be between the highest temperature of 24°C and the lowest temperature of 15°C. The warmest part of the day will be from 12h to 15h.
The highest temperature is more comparable to September's average maximum of 20.5°C than October's usual of 15.2°C. The lowest temperature is also expected to be more alike with September's minimum average of 12.2°C than October's 4.4°C.
Updated: Oct 20, 2026 @ 18:24:22 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

At 03:24 JST, the temperature is 16°C.

Today, in Karuizawa, a few afternoon showers could develop as the day warms up.

Today, there is a low chance of minimal precipitation in Karuizawa.

Today, the maximum temperature will be 25°C, while the minimum temperature will be 10°C.
The highest temperature will be noticeably higher than the average maximum of 15.2°C in October. The lowest temperature will be also uncommonly higher than the average low of 4.4°C.

On Wednesday, in Karuizawa, sunrise will be at 05:57 and sunset at 17:02 (JST).

In Karuizawa, the length of the day today will be 11h and 5min.