Weather in Yamaguchi in September
Yamaguchi, Japan averages a high of 26.9°C (80.4°F) and low of 19.6°C (67.3°F) in September, with 12 rain days and 8.9 hours of daily sunshine. Travel score: 75.7/100 (Good). The best time to visit Yamaguchi is October.
High
27°C80°F
Low
20°C67°F
🌧️
12
rain days
☀️
8.9
hrs/day sunshine
💧
81%
humidity
76— Good
September in Yamaguchi is warm and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Yamaguchi?
How much does it rain in Yamaguchi in September?
Yamaguchi receives an average of 185.7mm of rainfall across 12 rainy days in September. The annual total is 1652.7mm.
What should I pack for Yamaguchi in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 27°C
🧴
Sunscreen SPF 30+
9 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to Japan in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31