Sejong-si weather
Today's sky, the hour-by-hour rain chance and the 16-day forecast for Sejong-si, South Korea. Like most weather services, we show Sejong-si at one spot: Sejong, its largest city. At 7:15 AM local time it was cloudy and 6°C (43°F). Mostly light, on-and-off rain; heavier around 6 PM, 7 PM, 8 PM, 9 PM, 10 PM (15.7 mm total). Best months for weather: Apr–Jun, Sep–Oct.
Current conditions
- Clouds
- 100%
- Chance of rain
- 29%
- Rain
- 0.0 mm/h
Hourly Forecast
Mostly light, on-and-off rain; heavier around 6 PM, 7 PM, 8 PM, 9 PM, 10 PM (15.7 mm total)
Daily Forecast
Best Time to Visit
Peak season Apr–Jun, Sep–OctOff season Jul–Aug, Dec–Feb
About Sejong weather
Is it raining in Sejong right now?
No. It’s cloudy and 6° right now. Mostly light, on-and-off rain; heavier around 6 PM, 7 PM, 8 PM, 9 PM, 10 PM (15.7 mm total).
What’s the weather like in Sejong this week?
Over the next 7 days, expect highs of 7–17° and lows of -2–9°. Rain is likely on 3 of 7 days (Sunday, Monday, Thursday). The driest day looks like Tuesday.
Has it been raining in Sejong lately?
Barely. The past 7 days were mostly dry, with 0.0 mm of rain in total.
What should I pack for Sejong?
For the coming week, bring an umbrella or rain jacket and a warm winter coat.
Sejong-si weather by month
When is the best time to visit Sejong-si?
Based on weather alone, the best time to visit Sejong-si is Apr–Jun, Sep–Oct, according to NASA's 2001–2025 climate averages. Jul–Aug, Dec–Feb tends to be the least pleasant. Average highs run from 1°C (34°F) in January to 29°C (84°F) in August.
What is the rainiest month in Sejong-si?
July is the wettest month, with about 316 mm (12.4 in) of rain on average. January is the driest, with about 24 mm (0.9 in).
What is the hottest month in Sejong-si?
August is the warmest, with average highs of 29°C (84°F) and lows of 21°C (69°F). January is the coolest, with highs of 1°C (34°F) and lows of -8°C (17°F).
Does Sejong-si have a rainy season?
Yes. Jul–Aug is the rainy season (150 mm or more a month), while Oct–Mar is usually dry (under 60 mm).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis for Sejong), forecast and current conditions from Open-Meteo. Page updated . How we rate months