Live Weather & Forecast
Weather in Seongnam
Gyeonggi-do, South Korea · Real-time conditions & 3-day outlook
22°C
Feels like 23°C
72°F / Feels 73°F
Sunny
Seongnam, Gyeonggi-do
🌞 Daytime
Updated: 2026-04-15 12:00
Humidity
33%
Wind
9.7 km/h NW
Wind Gust
11.2 km/h
Pressure
1012 mb
Visibility
10 km
UV Index
6.6
(High)
Precipitation
0 mm
Cloud Cover
0%
Dew Point
2.7°C
Wind Degree
304°
Air Quality Index
US EPA: Unhealthy for Sensitive Groups
UK DEFRA: High (7)
CO
444.9 μg/m³
NO₂
89.7 μg/m³
O₃
0 μg/m³
SO₂
63.8 μg/m³
PM 2.5
58.1 μg/m³
PM 10
66.6 μg/m³
Today's Hourly Forecast
24-hour breakdown for Seongnam, Gyeonggi-do
12 AM
18°
Clear
1 AM
17°
Clear
2 AM
16°
Clear
3 AM
16°
Clear
4 AM
15°
Clear
5 AM
15°
Clear
6 AM
14°
Sunny
7 AM
15°
Sunny
8 AM
17°
Sunny
9 AM
19°
Sunny
10 AM
21°
Sunny
11 AM
22°
Sunny
12 PM
22°
Sunny
1 PM
24°
Sunny
2 PM
25°
Sunny
3 PM
25°
Sunny
4 PM
25°
Sunny
5 PM
24°
Sunny
6 PM
23°
Sunny
7 PM
21°
Sunny
8 PM
19°
Clear
9 PM
19°
Clear
10 PM
18°
Clear
11 PM
17°
Clear
3-Day Forecast
Daily overview for Seongnam, Gyeonggi-do
Today
Sunny
25°
/
14°
🌧️ 0% chance of rain
💧 Avg. humidity: 39%
💨 Max wind: 14.4 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.7
🌅 Sunrise: 05:57 AM
🌇 Sunset: 07:06 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Thu, Apr 16
Sunny
25°
/
12°
🌧️ 0% chance of rain
💧 Avg. humidity: 43%
💨 Max wind: 9.7 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.8
🌅 Sunrise: 05:56 AM
🌇 Sunset: 07:07 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Partly Cloudy
20°
/
14°
🌧️ 0% chance of rain
💧 Avg. humidity: 48%
💨 Max wind: 18 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.2
🌅 Sunrise: 05:55 AM
🌇 Sunset: 07:08 PM
🌙 New Moon
🌑 Moon: 0% lit
Best Time to Visit Seongnam
Plan your trip to Seongnam, South Korea around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Seongnam?
Current conditions in Seongnam: Sunny, temperature 22°C, humidity 33%.
What is the best time to visit Seongnam?
The best time to visit Seongnam is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Seongnam?
Seongnam is located at approximately 37.4° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Seongnam?
The wettest period in Seongnam is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Seongnam?
For visits to Seongnam during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Seongnam in?
Seongnam is located in South Korea, in the state of Gyeonggi-do.
What are the public holidays in Seongnam in 2026?
View the 2026 public holidays for Seongnam on our Holidays page.
What are the GPS coordinates used for the weather forecast in Seongnam?
The weather forecast for Seongnam uses coordinates 37.4202, 127.1262.