Live Weather & Forecast
Weather in Yamaguchi
Japan · Real-time conditions & 3-day outlook
17°C
Feels like 17°C
63°F / Feels 63°F
Overcast
Yamaguchi, Japan
🌙 Nighttime
Updated: 2026-04-17 20:15
Humidity
83%
Wind
31 km/h SSE
Wind Gust
49 km/h
Pressure
1014 mb
Visibility
10 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
75%
Dew Point
11.2°C
Wind Degree
153°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
204.9 μg/m³
NO₂
6.5 μg/m³
O₃
120 μg/m³
SO₂
4 μg/m³
PM 2.5
9.4 μg/m³
PM 10
13.7 μg/m³
Today's Hourly Forecast
24-hour breakdown for Yamaguchi, Japan
12 AM
10°
Clear
1 AM
10°
Clear
2 AM
10°
Clear
3 AM
10°
Clear
4 AM
13°
Overcast
5 AM
14°
Overcast
6 AM
14°
Overcast
7 AM
15°
Sunny
8 AM
16°
Partly Cloudy
9 AM
17°
Partly Cloudy
10 AM
18°
Partly Cloudy
11 AM
18°
Cloudy
12 PM
18°
Patchy rain nearby
1 PM
18°
Cloudy
2 PM
18°
Sunny
3 PM
19°
Partly Cloudy
4 PM
18°
Partly Cloudy
5 PM
17°
Patchy rain nearby
6 PM
16°
Patchy rain nearby
7 PM
16°
Cloudy
8 PM
17°
Overcast
9 PM
16°
Partly Cloudy
10 PM
15°
Clear
11 PM
15°
Partly Cloudy
3-Day Forecast
Daily overview for Yamaguchi, Japan
Today
Partly Cloudy
19°
/
10°
🌧️ 0% chance of rain
💧 Avg. humidity: 74%
💨 Max wind: 32 km/h
🌧️ Total precip: 0.06 mm
☀️ UV Index: 1.1
🌅 Sunrise: 05:41 AM
🌇 Sunset: 06:47 PM
🌙 New Moon
🌑 Moon: 0% lit
Sat, Apr 18
Patchy rain nearby
20°
/
13°
🌧️ 92% chance of rain
💧 Avg. humidity: 83%
💨 Max wind: 28.1 km/h
🌧️ Total precip: 0.68 mm
☀️ UV Index: 1.3
🌅 Sunrise: 05:40 AM
🌇 Sunset: 06:48 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Sun, Apr 19
Sunny
21°
/
12°
🌧️ 0% chance of rain
💧 Avg. humidity: 77%
💨 Max wind: 10.1 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2
🌅 Sunrise: 05:39 AM
🌇 Sunset: 06:49 PM
🌙 Waxing Crescent
🌑 Moon: 3% lit
Best Time to Visit Yamaguchi
Plan your trip around the most favorable weather conditions in Yamaguchi, Japan.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Yamaguchi?
Current conditions in Yamaguchi: Overcast, temperature 17°C, humidity 83%.
What is the best time to visit Yamaguchi?
The best time to visit Yamaguchi is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Yamaguchi?
Yamaguchi shares the climate of Japan. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Yamaguchi?
Rainfall patterns in Yamaguchi vary by season. Peak rainfall typically occurs outside of the dry season.
What should I pack for Yamaguchi?
For visits during June – September: light clothing and sun protection. For the November – March period: layers and a waterproof jacket are recommended for Yamaguchi.
What country is Yamaguchi in?
Yamaguchi is a state/province of Japan.
What are the public holidays in Yamaguchi in 2026?
View the full list of 2026 public holidays for Yamaguchi on our Holidays page.
What are the coordinates for the weather forecast in Yamaguchi?
The weather forecast for Yamaguchi is based on coordinates 34.4075, 131.3992.