Weather in Jōetsu in September
Jōetsu, Japan averages a high of 25.5°C (77.9°F) and low of 18.9°C (66°F) in September, with 16 rain days and 8.3 hours of daily sunshine. Travel score: 69.2/100 (Good). The best time to visit Jōetsu is June.
High
26°C78°F
Low
19°C66°F
🌧️
16
rain days
☀️
8.3
hrs/day sunshine
💧
84%
humidity
69— Good
September in Jōetsu is warm and rainy — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Jōetsu?
How much does it rain in Jōetsu in September?
Jōetsu receives an average of 198.8mm of rainfall across 16 rainy days in September. The annual total is 2228mm.
What should I pack for Jōetsu in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 26°C
🧥
Waterproof jacket
Frequent rain expected (16 rainy days)
☔
Umbrella
Essential for the rainy season
👢
Waterproof shoes
Keep your feet dry in wet conditions
🧴
Sunscreen SPF 30+
8 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