Ansan Weather in December
December in Ansan brings low temperatures around 6°C (43°F) during the day, dropping to -2°C (28°F) at night, with some snow/rainfall expected.
Rainfall in Ansan in December
Past climate data indicates that roughly 8 days will see snow/rain, totalling around 29 mm (1.1 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Ansan in December
If you're visiting Ansan in December, expect highs of 6°C (43°F) and overnight lows around -2°C (28°F). Winter occurs in December. The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. Nights drop below freezing to -2°C (28°F). An extra blanket is worth packing if you're unsure about the heating where you're staying.
Sunshine in Ansan in December
The month experiences a moderate amount of sunlight, with 178 hours of sunshine. This provides a nice balance between sunshine and clouds.If you prefer enjoying temperate temperatures and rain-free days, October typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Korea, check out our Ansan's climate page.
Ansan Temperature in December
Min Temperature
-2°C (28°F)
Max Temperature
6°C (43°F)
Chance of Rain
27%
Precipitation
29 mm (1.1 in)
Rainy days
8 days
Humidity
62% *
Sunshine
178 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ansan typically drop from around 7°C (45°F) at the start of December to approximately 2°C (36°F) by the end. Nights are very cold, with lows typically ranging from -8°C (18°F) to -2°C (28°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Ansan in December
Browse day-by-day weather records for Ansan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ansan historical weather extremes in December
The extremes listed below come from historical weather data collected in Ansan from 1976 through 2025.
- The warmest day in December was on December 8, 2023, with a maximum of 17°C (63°F).
- Nighttime temperatures dropped to -19°C (-2°F) on December 30, 1980, marking the coldest December night on record.
Best Places in South Korea in December
Find out more about the weather in South Korea and which places have the best travel conditions in this month. See all of South Korea in December →
perfect weather
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tolerable
unpleasant
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What to Wear in Ansan in December
Cold weather calls for smart layering in December. 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. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Ansan in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Korea, check out our Ansan's climate page.
Temperature Rainfall Sunshine Humidity
See the full Ansan climate overview or explore weather in South Korea.
