Seongnam
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Seongnam Weather in March

Seongnam in March averages 12°C (54°F) during the day and 0°C (32°F) at night. Some rainfall is typical for this time of year.

Rainfall in Seongnam in March

On average, there are about 7 days with rain during this month, averaging 42 mm (1.7 in). 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 March

Daytime temperatures in Seongnam reach 12°C (54°F) in March, dropping to 0°C (32°F) at night. The difference between afternoon and evening temperatures is usually noticeable. With overnight lows of 0°C (32°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Seongnam in March

Enjoy a sunny month with about 199 hours of sunshine, making it one of the brighter months of the year despite the cool conditions.

Wind Speed in Seongnam in March

Wind speeds average 2 m/s (4 knots) during March. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.

Should you favor a climate that's both dry and comfortably warm, October typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

Seongnam Temperature in March

Min Temperature
0°C (32°F)
Max Temperature
12°C (54°F)
Chance of Rain
24%
Precipitation
42 mm (1.7 in)
Rainy days
7 days
Humidity
54% *
Windspeed
2 m/s (4 knots) *
Sunshine
199 hours *
Percentage Sunshine
55% *
* Data from: Seoul, South Korea (20 KM, 12 Miles).

Seongnam Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Seongnam - and find the best time to visit.

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Seongnam typically rise from around 8°C (46°F) at the start of March to approximately 14°C (57°F) by the end. Nights are cold, with lows typically ranging from -2°C (28°F) to 3°C (37°F).

Average temperatures in March

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 March

Historical weather records for Seongnam in March

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 March

Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Seongnam.

  • Seongnam recorded its highest March temperature of 25°C (77°F) on March 26, 2025.
  • The coldest night in March in Seongnam was on March 5, 1977, with a minimum of -10°C (14°F).

Best Places in South Korea in March

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 March →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Seongnam in March

The weather can swing between comfortable and chilly in March, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Seongnam in March

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

  • Swimming
    5/10
  • Cycling
    6/10
  • Walking
    6/10
  • Camping
    5/10
  • Outdoor sports
    6/10

Seongnam 3-Day Forecast

More climate data for Seongnam

Popular in March

Where to go in March - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.