Yanai

Yanai Shi, Yamaguchi, Japan

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Current Weather

21°

Partly Cloudy

Feels Like: 20°

Min: 19°

Max: 30°

The next few hours will be mostly cloudy, with today reaching 30°C and dropping to 18°C. The coming days will be light rain throughout the day.

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Hourly Forecast

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Today
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Daylight Hours

06:04

Sunrise

18:03

Sunset

11 hours 58 minutes of sunlight today

Moon

Waxing Gibbous

15:09

Moonrise

01:11

Moonset

Daily Forecast

Monday

19°
30°

Tuesday

18°
29°

Wednesday

18°
27°

Thursday

16°
28°

Friday

21°
26°

Saturday

19°
20°

Sunday

19°
24°

Monday

21°
25°

Tuesday

19°
26°

Wednesday

18°
25°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

81% Humid
Low High

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Weather in Yanai today, September 21, 2026

Yanai stays under cloudy skies on September 21, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open. Morning skies stay relatively clear, holding cloud close to 55% near 06:00. The early part of the day favours being outside.

The day peaks near 30°C and cools toward 19°C. The air stays humid, with relative humidity between 51% and 83% and the peak around 06:00. Airflow remains manageable, reaching about 3.7 km/h around 15:00.

Expect a more open afternoon, with limited cloud around 47% by 15:00. Residual damp risk should be lower than earlier. Expect visibility around 16.1 km. Sunrise is at 06:04 and sunset at 18:03, giving 11 hours 58 minutes of sunlight today.

In short, cloud leads the story in Yanai on September 21, 2026; expect limited sun and a peak around 30°C.

Frequently asked questions about weather in Yanai

How warm does it get in Yanai?

The warmest month in Yanai is August, with average high temperatures of 30°C. The average temperature during this period is around 28°C.

How cold does it get in Yanai?

The coldest month in Yanai is February, with average low temperatures of 5°C. The average temperature during this period is around 7°C.

What is the wettest time of year in Yanai?

The wettest month in Yanai is July, with an average of 265mm of precipitation.

What is the driest time of year in Yanai?

The driest month in Yanai is January, with an average of 61mm of precipitation.

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Metric (°C, km/h)