Weather in Osan in December
Osan, South Korea averages a high of 4°C (39.2°F) and low of -4.1°C (24.6°F) in December, with 4 rain days and 7.6 hours of daily sunshine. Travel score: 60/100 (Good). The best time to visit Osan is June.
High
4°C39°F
Low
-4°C25°F
🌧️
4
rain days
☀️
7.6
hrs/day sunshine
💧
65%
humidity
60— Good
December in Osan is cold and mostly dry — bundle up and enjoy the cool weather.
What are the average temperatures in Osan?
How much does it rain in Osan in December?
Osan receives an average of 21.3mm of rainfall across 4 rainy days in December. The annual total is 1139.8mm.
What should I pack for Osan in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Heavy winter coat
Cold weather with highs around 4°C
🩳
Thermal base layers
Stay warm in freezing temperatures
🧤
Warm gloves
Cold nights around -4°C
🧣
Warm scarf
Protect against cold winds
Traveling to South Korea in December?
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