Weather forecast for 10 daysKoya, Japan

Weather forecast for the weekend

Sunday 1. Nov 2026

  • 18°C
  • 10°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0mm
  • Wind: 10km/hWSW 243°
  • Humidity: 58%
  • UV index: 5
  • Sunrise: 06:17 JST
  • Sunset: 17:05 JST
  • ▼
On Sunday, November 1, mostly sunny and dry conditions will continue.
Temperature fluctuations between an enjoyable 18°C and a cool 10°C are forecasted.
The forecasted temperature is relatively lower than October's regular maximum of 20.5°C.
Sunrise will be at 06:17 and sunset at 17:05; the daylight will last for 10h and 48min.

10-day overview

Daily temperatures

Warmest day: today 18°C.
Coldest day: Sunday 08.11. 11°C.

Chance of precipitation

Highest chance: tomorrow 99%.

Long-term weather forecast

  • Sunday
  • 1. Nov 2026
  • 18°C
  • 10°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0mm
  • Wind: 10km/hWSW 243°
  • Humidity: 58%
  • UV index: 5
  • Sunrise: 06:17 JST
  • Sunset: 17:05 JST
  • ▼
  • Monday
  • 2. Nov 2026
  • 16°C
  • 8°C
Rain
Rain
  • Precip. probability: 99%
  • Precipitation: 12mm
  • Wind: 17km/hWSW 252°
  • Humidity: 86%
  • UV index: 2
  • Sunrise: 06:18 JST
  • Sunset: 17:04 JST
  • ▼
  • Tuesday
  • 3. Nov 2026
  • 15°C
  • 5°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 14km/hN 356°
  • Humidity: 65%
  • UV index: 5
  • Sunrise: 06:18 JST
  • Sunset: 17:03 JST
  • ▼
  • Wednesday
  • 4. Nov 2026
  • 16°C
  • 10°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 9mm
  • Wind: 10km/hNE 47°
  • Humidity: 60%
  • UV index: 4
  • Sunrise: 06:19 JST
  • Sunset: 17:02 JST
  • ▼
  • Thursday
  • 5. Nov 2026
  • 17°C
  • 11°C
Showers
Showers
  • Precip. probability: 67%
  • Precipitation: 6mm
  • Wind: 9km/hNW 321°
  • Humidity: 82%
  • UV index: 3
  • Sunrise: 06:20 JST
  • Sunset: 17:01 JST
  • ▼
  • Friday
  • 6. Nov 2026
  • 17°C
  • 6°C
AM Showers
AM Showers
  • Precip. probability: 41%
  • Precipitation: 1mm
  • Wind: 18km/hWNW 300°
  • Humidity: 69%
  • UV index: 4
  • Sunrise: 06:21 JST
  • Sunset: 17:00 JST
  • ▼
  • Saturday
  • 7. Nov 2026
  • 12°C
  • 3°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0mm
  • Wind: 20km/hNNW 335°
  • Humidity: 60%
  • UV index: 4
  • Sunrise: 06:22 JST
  • Sunset: 16:59 JST
  • ▼
  • Sunday
  • 8. Nov 2026
  • 11°C
  • 3°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 10%
  • Precipitation: 0mm
  • Wind: 16km/hN 0°
  • Humidity: 62%
  • UV index: 3
  • Sunrise: 06:23 JST
  • Sunset: 16:59 JST
  • ▼
  • Monday
  • 9. Nov 2026
  • 12°C
  • 3°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 11%
  • Precipitation: 0mm
  • Wind: 13km/hN 3°
  • Humidity: 62%
  • UV index: 4
  • Sunrise: 06:24 JST
  • Sunset: 16:58 JST
  • ▼
  • Tuesday
  • 10. Nov 2026
  • 13°C
  • 4°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 23%
  • Precipitation: 0mm
  • Wind: 12km/hN 351°
  • Humidity: 61%
  • UV index: 4
  • Sunrise: 06:25 JST
  • Sunset: 16:57 JST
  • ▼
Models point to a combination of dull, showery and dry and sunny weather is anticipated.
Rainfall is forecasted for Monday, Wednesday through Friday.
Significant changes in temperature are expected over the next several days. The temperature is expected to swing from 11°C up to 18°C, while there will be also a marked difference in overnight low temperatures, as the minimum temperature is expected to range between 3°C and 11°C.
The warmest day is today, with a maximum temperature of 18°C; the coldest day will be next Sunday, with a maximum of 11°C.
Updated: Oct 31, 2026 @ 20:53:21 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, bright conditions and mild breezes are expected.

Today, the highest temperature will be 18°C, while the lowest temperature will be 10°C.
The highest temperature will be slightly cooler than the average maximum of 20.5°C in October. The lowest temperature will be also a few degrees lower than the average low of 13°C.

On Sunday, in Koya, sunrise will be at 06:17 and sunset at 17:05 (JST).

In Koya, Japan, the length of the day today will be 10h and 48min.