Weather in Jeju City in September
Jeju City, South Korea averages a high of 25.5°C (77.9°F) and low of 22.2°C (72°F) in September, with 12 rain days and 8.5 hours of daily sunshine. Travel score: 73.3/100 (Good). The best time to visit Jeju City is October.
High
26°C78°F
Low
22°C72°F
🌧️
12
rain days
☀️
8.5
hrs/day sunshine
💧
81%
humidity
73— Good
September in Jeju City is warm and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Jeju City?
How much does it rain in Jeju City in September?
Jeju City receives an average of 204.4mm of rainfall across 12 rainy days in September. The annual total is 1491.9mm.
What should I pack for Jeju City in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 26°C
🧴
Sunscreen SPF 30+
9 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
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