This trip to Okayama, Takamatsu, and Hiroshima was made possible by using the JR Okayama & Hiroshima & Yamaguchi Area Rail Pass 5-Day, which significantly reduced transportation costs. I could reserve seats on the Shinkansen to and from Hiroshima; and use the JR Pass for other destinations in Takamatsu, Kurashiki, and Okayama. One pass is all you need to travel everywhere!
Anonymous User
Family
Yamaguchi City Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Yamaguchi City year round climate
Spring (March–May): Average 10.6–18.9°C, mild climate but with relatively high rainfall, especially in April. Common activities: Hiking, flower viewing. Recommended clothing: Light jacket, comfortable long-sleeved shirt.
Summer (June–August): Average 23.1–28.8°C, hot and humid with relatively high rainfall, most rainfall in July. Common activities: Swimming at the beach, visiting summer resorts. Recommended clothing: Light and breathable clothing, sun hat.
Autumn (September–November): Average 18.4–25.9°C, comfortable and pleasant climate with gradually decreasing rainfall. Common activities: Mountain hiking, viewing autumn leaves. Recommended clothing: Light jacket or long-sleeved shirt.
Winter (December–February): Average 4.8–6.2°C, cold and dry with low rainfall. Common activities: Hot spring experience, indoor activities. Recommended clothing: Warm coat, sweater, scarf.
Yamaguchi City climatological average
Annual average temperature: approx. 17°C / Annual rainfall: approx. 1974 mm / Summer humidity: 70%–80% / Rainiest month: July
Yamaguchi City monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
4.8°C
54.8
February
6°C
102.3
March
10.6°C
136.3
April
15.7°C
212.4
May
18.9°C
144.4
June
23.1°C
235.5
July
27.6°C
394.4
August
28.8°C
160.6
September
25.9°C
258.5
October
18.4°C
91.1
November
13.2°C
136.4
December
6.2°C
48.1
Yamaguchi City weather for the next seven days
8/25
Tuesday
Sunny
31.5°C/22.6°C
8/26
Wednesday
Sunny
30.9°C/22.6°C
8/27
Thursday
Overcast
29.7°C/23.2°C
8/28
Friday
Light rain shower
31.1°C/22.7°C
8/29
Saturday
Light rain shower
30.8°C/23.7°C
8/30
Sunday
Light rain shower
27.8°C/22.8°C
8/31
Monday
Mist
30.3°C/22.5°C
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