Weather in Seongnam-si in September
Seongnam-si, South Korea averages a high of 24.7°C (76.5°F) and low of 16.7°C (62.1°F) in September, with 8 rain days and 8.4 hours of daily sunshine. Travel score: 80.8/100 (Excellent). The best time to visit Seongnam-si is June.
High
25°C76°F
Low
17°C62°F
🌧️
8
rain days
☀️
8.4
hrs/day sunshine
💧
77%
humidity
81— Excellent
September in Seongnam-si is warm and occasionally wet — excellent conditions for exploring.
What are the average temperatures in Seongnam-si?
How much does it rain in Seongnam-si in September?
Seongnam-si receives an average of 133.1mm of rainfall across 8 rainy days in September. The annual total is 1272.8mm.
What should I pack for Seongnam-si in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 25°C
🧴
Sunscreen SPF 30+
8 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (8 days)
☔
Umbrella
Be prepared for occasional showers
Traveling to South Korea 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