Weather in Isahaya in September
Isahaya, Japan averages a high of 27.2°C (81°F) and low of 22.3°C (72.1°F) in September, with 11 rain days and 9 hours of daily sunshine. Travel score: 76.4/100 (Good). The best time to visit Isahaya is October.
High
27°C81°F
Low
22°C72°F
🌧️
11
rain days
☀️
9
hrs/day sunshine
💧
79%
humidity
76— Good
September in Isahaya is warm and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Isahaya?
How much does it rain in Isahaya in September?
Isahaya receives an average of 185.6mm of rainfall across 11 rainy days in September. The annual total is 2060.5mm.
What should I pack for Isahaya 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
Recommended
🧥
Light rain jacket
Some rainy days expected (11 days)
☔
Umbrella
Be prepared for occasional showers
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