Weather in Kōshi in September
Kōshi, Japan averages a high of 27.9°C (82.2°F) and low of 20.2°C (68.4°F) in September, with 11 rain days and 8.6 hours of daily sunshine. Travel score: 77.5/100 (Good). The best time to visit Kōshi is October.
High
28°C82°F
Low
20°C68°F
🌧️
11
rain days
☀️
8.6
hrs/day sunshine
💧
79%
humidity
78— Good
September in Kōshi is warm and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Kōshi?
How much does it rain in Kōshi in September?
Kōshi receives an average of 158.3mm of rainfall across 11 rainy days in September. The annual total is 1929.3mm.
What should I pack for Kōshi in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 28°C
🧴
Sunscreen SPF 30+
9 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (11 days)
☔
Umbrella
Be prepared for occasional showers
🎉Visiting Japan in September?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31