Weather in Iwatsuki in September
Iwatsuki, Japan averages a high of 26.7°C (80.1°F) and low of 19.8°C (67.6°F) in September, with 13 rain days and 7.8 hours of daily sunshine. Travel score: 72.2/100 (Good). The best time to visit Iwatsuki is August.
High
27°C80°F
Low
20°C68°F
🌧️
13
rain days
☀️
7.8
hrs/day sunshine
💧
80%
humidity
72— Good
September in Iwatsuki is warm and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Iwatsuki?
How much does it rain in Iwatsuki in September?
Iwatsuki receives an average of 175.9mm of rainfall across 13 rainy days in September. The annual total is 1357.9mm.
What should I pack for Iwatsuki in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 27°C
🧴
Sunscreen SPF 30+
8 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
🎉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