Weather forecast for 10 daysKoyasu, Japan

Weather forecast for the weekend

Saturday 7. Nov 2026

  • 18°C
  • 9°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 12%
  • Precipitation: 0mm
  • Wind: 9km/hENE 74°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 06:09 JST
  • Sunset: 16:43 JST
  • ▼
On Saturday, in Koyasu, expect brilliant sunshine under mostly clear skies.
Expected temperatures will peak at a breezy 18°C and dip to a minimum of a brisk 9°C.
Saturday's high temperature will mirror the usual November maximum of 17.1°C.
Sunrise will be at 06:09 and sunset at 16:43; the daylight will last for 10h and 33min.

Sunday 8. Nov 2026

  • 16°C
  • 10°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 10%
  • Precipitation: 3mm
  • Wind: 8km/hNE 54°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 06:10 JST
  • Sunset: 16:42 JST
  • ▼
On Sunday, November 8, expect a mix of sun and clouds throughout the day.
Minimal precipitation is anticipated. Forecasted temperatures will peak at an enjoyable 16°C and dip to a minimum of a cool 10°C.
The predicted high temperature will align with November's average of 17.1°C.
Sunrise will be at 06:10 and sunset at 16:42; the daylight will last for 10h and 31min.

10-day overview

Daily temperatures

Warmest day: tomorrow 23°C.
Coldest period: Monday - Tuesday 14°C.

Chance of precipitation

Highest chance: Monday 43%.

Long-term weather forecast

  • Thursday
  • 5. Nov 2026
  • min.
  • 15°C
Clouds Early / Clearing Late
Clouds Early / Clearing Late
  • Precip. probability: 10%
  • Precipitation: 0mm
  • Wind: 7km/hW 270°
  • Humidity: 90%
  • UV index: 0
  • Sunrise: 06:08 JST
  • Sunset: 16:44 JST
  • ▼
  • Friday
  • 6. Nov 2026
  • 23°C
  • 12°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0mm
  • Wind: 9km/hSSW 204°
  • Humidity: 70%
  • UV index: 4
  • Sunrise: 06:08 JST
  • Sunset: 16:44 JST
  • ▼
  • Saturday
  • 7. Nov 2026
  • 18°C
  • 9°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 12%
  • Precipitation: 0mm
  • Wind: 9km/hENE 74°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 06:09 JST
  • Sunset: 16:43 JST
  • ▼
  • Sunday
  • 8. Nov 2026
  • 16°C
  • 10°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 10%
  • Precipitation: 3mm
  • Wind: 8km/hNE 54°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 06:10 JST
  • Sunset: 16:42 JST
  • ▼
  • Monday
  • 9. Nov 2026
  • 14°C
  • 9°C
Showers
Showers
  • Precip. probability: 43%
  • Precipitation: 5mm
  • Wind: 11km/hN 8°
  • Humidity: 78%
  • UV index: 2
  • Sunrise: 06:11 JST
  • Sunset: 16:41 JST
  • ▼
  • Tuesday
  • 10. Nov 2026
  • 14°C
  • 7°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0mm
  • Wind: 10km/hNE 34°
  • Humidity: 60%
  • UV index: 4
  • Sunrise: 06:12 JST
  • Sunset: 16:40 JST
  • ▼
  • Wednesday
  • 11. Nov 2026
  • 15°C
  • 8°C
Sunny
Sunny
  • Precip. probability: 10%
  • Precipitation: 0mm
  • Wind: 9km/hNNE 29°
  • Humidity: 62%
  • UV index: 4
  • Sunrise: 06:13 JST
  • Sunset: 16:39 JST
  • ▼
  • Thursday
  • 12. Nov 2026
  • 17°C
  • 10°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0mm
  • Wind: 7km/hNE 36°
  • Humidity: 65%
  • UV index: 4
  • Sunrise: 06:14 JST
  • Sunset: 16:39 JST
  • ▼
  • Friday
  • 13. Nov 2026
  • 19°C
  • 11°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 7km/hNE 42°
  • Humidity: 63%
  • UV index: 4
  • Sunrise: 06:15 JST
  • Sunset: 16:38 JST
  • ▼
  • Saturday
  • 14. Nov 2026
  • 19°C
  • 12°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0mm
  • Wind: 8km/hE 90°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 06:16 JST
  • Sunset: 16:37 JST
  • ▼
Models point to a combination of overcast, mostly clear and rain-soaked weather is expected.
With a 43% probability, rainfall is predicted only for Monday. Forecasted precipitation will be light at 5mm.
Temperature fluctuation will be noticeable in the next ten days. The temperature is expected to swing from 14°C up to 23°C, while there will be also a marked difference in overnight low temperatures, as the overnight lows will vary from 7°C to 15°C.
Expect the warmest day on Friday, with temperatures peaking at 23°C; Monday and Tuesday, with the highest temperature of 14°C, will be the coldest days in Koyasu.
Updated: Nov 5, 2026 @ 13:44:40 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

In Koyasu, a combination of overcast, bright and rainy weather is predicted for the next ten days.

Rainfall is predicted only for Monday. With a probability of 43%, light precipitation of 5mm is expected.

The maximum temperature will range between 14°C and 23°C, as the minimum temperature will vary between 7°C and 15°C.

The warmest day will be tomorrow, with a maximum of 23°C. The coldest days will be Monday and Tuesday, with a maximum of 14°C.

On Saturday, in Koyasu, predominantly sunny weather will make for pleasant outdoor conditions.

On Saturday, the highest temperature will be 18°C, while the lowest temperature will be 9°C.

On Sunday, in Koyasu, expect a mix of sun and clouds throughout the day.

On Sunday, there is a low chance of minimal precipitation in Koyasu.

On Sunday, the highest temperature will be 16°C, while the lowest temperature will be 10°C.