Weather forecast for todayKaruizawa, Japan

Weather forecast for today

Current condition 05:16 JST

  • 16°C
  • Feels like:
    16°C
Mostly Cloudy
Mostly Cloudy
  • Precipitation: 0mm
  • Wind: 3km/hWSW 240°
  • Humidity: 90%
  • Dewpoint: 14°C
  • Pressure: 1014.56mbar
  • Visibility: 4.67km
  • UV index: 0
  • ▼
At the moment, a dense layer of clouds is spreading across the sky, making it predominantly cloudy.
The temperature is an enjoyable 16°C. The current temperature is relatively far from today's maximum-forecasted 25°C.

Wednesday 21. Oct 2026

  • 25°C
  • 10°C
Few Showers
Few Showers
  • Precip. probability: 32%
  • Precipitation: 2mm
  • Wind: 21km/hWSW 241°
  • Humidity: 66%
  • UV index: 5
  • Sunrise: 05:57 JST
  • Sunset: 17:02 JST
  • ▼
Today, in Karuizawa, a few sprinkles may pass through now and then.
Minimal precipitation is anticipated. Substantial temperature fluctuations from a high of a warm 25°C to a low of a crisp 10°C are predicted.
The expected high of 25°C appears seasonally off, better matching September's typical values.
Sunrise will be at 05:57 and sunset at 17:02; the daylight will last for 11h and 5min.

Hourly overview

Hourly temperatures

Warmest hour: 14h 25°C.
Minimum temperature: 15°C.

Chance of precipitation

Highest chance: 20h 72%.

Hourly weather forecast

  • 6h
  • 15°C
  • Feels like:
    15°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0mm
  • Wind: 4km/hWSW 258°
  • Humidity: 91%
  • 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 222°
  • Humidity: 84%
  • Pressure: 1013mbar
  • Visibility: 15km
  • UV index: 1
  • ▼
  • 10h
  • 22°C
  • Feels like:
    22°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0mm
  • Wind: 11km/hSW 230°
  • Humidity: 64%
  • Pressure: 1011mbar
  • Visibility: 16km
  • UV index: 4
  • ▼
  • 12h
  • 24°C
  • Feels like:
    24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0mm
  • Wind: 15km/hWSW 238°
  • Humidity: 51%
  • Pressure: 1009mbar
  • Visibility: 16km
  • UV index: 5
  • ▼
  • 14h
  • 25°C
  • Feels like:
    25°C
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0mm
  • Wind: 20km/hWSW 242°
  • Humidity: 47%
  • Pressure: 1008mbar
  • Visibility: 16km
  • UV index: 3
  • ▼
  • 16h
  • 23°C
  • Feels like:
    23°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 9%
  • Precipitation: 0mm
  • Wind: 21km/hWSW 245°
  • Humidity: 50%
  • Pressure: 1008mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Sunset: 17:02
  • 18h
  • 21°C
  • Feels like:
    21°C
Few Showers
Few Showers
  • Precip. probability: 33%
  • Precipitation: 1mm
  • Wind: 17km/hW 261°
  • Humidity: 61%
  • Pressure: 1008mbar
  • Visibility: 14km
  • UV index: 0
  • ▼
  • 20h
  • 18°C
  • Feels like:
    18°C
Light Rain
Light Rain
  • Precip. probability: 72%
  • Precipitation: 1mm
  • Wind: 11km/hWNW 283°
  • Humidity: 79%
  • Pressure: 1010mbar
  • Visibility: 10km
  • UV index: 0
  • ▼
  • 22h
  • 16°C
  • Feels like:
    16°C
Cloudy
Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 10km/hWNW 288°
  • Humidity: 88%
  • Pressure: 1011mbar
  • Visibility: 9km
  • UV index: 0
  • ▼
Today, in Karuizawa, a combination of cloud-filled, dry and sunny and damp weather is forecasted.
With minimal precipitation of 1mm, rainfall is anticipated from 18h to 21h.
The temperature will vary between a minimum of 15°C and a maximum of 25°C. The warmest part of the day will be at 13h and 14h.
The temperature will feel more similar to September's average high than the expected maximum for October. Forecasts show a temperature also more close to September's average minimum of 12.2°C rather than the October average of 4.4°C.
Updated: Oct 20, 2026 @ 20:16:16 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The temperature at 05:16 JST in Karuizawa is 16°C.

On Wednesday, in Karuizawa, scattered rain showers may move through at times.

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

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

Today, the daylight will last for 11h and 5min.