Weather in Sumy in September
Sumy, Ukraine averages a high of 19.1°C (66.4°F) and low of 10.5°C (50.9°F) in September, with 8 rain days and 8.6 hours of daily sunshine. Travel score: 76.6/100 (Good). The best time to visit Sumy is August.
High
19°C66°F
Low
11°C51°F
🌧️
8
rain days
☀️
8.6
hrs/day sunshine
💧
68%
humidity
77— Good
September in Sumy is mild and mostly dry — good for most activities.
What are the average temperatures in Sumy?
How much does it rain in Sumy in September?
Sumy receives an average of 48.7mm of rainfall across 8 rainy days in September. The annual total is 591.5mm.
What should I pack for Sumy in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 19°C
Recommended
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
Traveling to Ukraine 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