Seongnam Weather in January
Seongnam in January sees low temperatures, with highs around 3°C (37°F) and overnight lows of -7°C (19°F). It's the driest month of the year, with very little snow/rainfall to worry about.
Rainfall in Seongnam in January
Dry conditions dominate this month. A good time for outdoor fun and exploration, even if the temperatures are on the cool side. Typically, about 7 days will experience snow/rainfall, with an average of 23 mm (0.9 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Seongnam in January
In January, expect low temperatures in Seongnam, with highs of 3°C (37°F) and lows of -7°C (19°F) at night. The winter season is characteristic of January. Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. At -7°C (19°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. As the coldest month of the year, it's important to pack plenty of warm clothes and winter gear.
Sunshine in Seongnam in January
The area enjoys a balanced 171 hours of sunlight, ensuring it's neither too overcast nor too sunny.
Wind Speed in Seongnam in January
Average wind conditions reach 2 m/s (4 knots) in January. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.If you're looking for dry conditions and comfortable temperatures, January may not be the ideal month to visit Seongnam. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 Seongnam's climate page.
Seongnam Temperature in January
Min Temperature
-7°C (19°F)
Max Temperature
3°C (37°F)
Chance of Rain
24%
Precipitation
23 mm (0.9 in)
Rainy days
7 days
Humidity
57% *
Windspeed
2 m/s (4 knots) *
Sunshine
171 hours *
Percentage Sunshine
53% *
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Seongnam typically stay consistent throughout January, with daily highs averaging around 3°C (37°F). Nights are very cold, with lows typically ranging from -9°C (16°F) to -6°C (21°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Seongnam in January
Browse day-by-day weather records for Seongnam spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Seongnam historical weather extremes in January
Based on weather observations in Seongnam between 1976 and 2025, these are the recorded extremes during January.
- Seongnam recorded its highest January temperature of 18°C (64°F) on January 3, 1976.
- Seongnam experienced its chilliest January day on January 5, 1986, reaching only -11°C (12°F).
Best Places in South Korea in January
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 January →
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What to Wear in Seongnam in January
We recommend to layer up for chilly conditions in Seongnam in January. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. Some rain is possible, so pack something to handle light showers. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Seongnam in January
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 Seongnam's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Seongnam climate overview or explore weather in South Korea.
