Osan Weather in January

January in Osan sees daytime temperatures around 4°C (39°F) and lows of -6°C (21°F) at night. As the driest month of the year.

Rainfall in Osan in January

As the driest month, it's a good time for hiking and exploring the area, even if you'll need to layer up. You can expect snow/rain on roughly 8 days based on historical data, averaging 24 mm (0.9 in) for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Osan in January

Expect highs of 4°C (39°F) in Osan in January, with nights dropping to around -6°C (21°F). The winter season takes place during January. It stays very cold throughout much of the day, so warm winter clothing is essential. Nights drop below freezing to -6°C (21°F). An extra blanket is worth packing if you're unsure about the heating where you're staying. Typically, it's the chilliest month of the year, making it a great time for cozying up indoors. Do make sure you're prepared by packing the right winter outfits.

Sunshine in Osan in January

The month experiences a moderate amount of sunlight, with 173 hours of sunshine. This provides a nice balance between sunshine and clouds.

January in Osan can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit South Korea, check out our Osan's climate page.

Osan Temperature in January

Min Temperature -6°C (21°F)  

Max Temperature 4°C (39°F)  

Chance of Rain 26%  

Precipitation 24 mm (0.9 in)  

Rainy days 8 days  

Humidity 71% *  

Sunshine 173 hours *  

Percentage Sunshine 54% *  

* Data from: Cheonan, South Korea (38 KM, 23 Miles).

What to Wear in Osan in January

Cold weather calls for smart layering in January. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Pack a light rain jacket or compact umbrella for occasional showers. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Osan in January

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

3/10

Walking

3/10

Camping

2/10

Outdoor sports

3/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit South Korea, check out our Osan's climate page.

More climate data for Osan

Temperature Rainfall Sunshine Humidity

See the full Osan climate overview or explore weather in South Korea.