Sejong, South Korea Weather
- Sejong, South Korea Weather
- Current conditions
- Weather forecast
- Averages and extremes
- Yesterday's Data
- Temperature and possibility of rain in Sejong over the next 12 hours
- Temperature and possibility of rain in Sejong in the coming days
- Rainfall in Sejong in the coming days
- Sejong Weather Summary
- Weather averages by month
- Sejong's weather
- Frequently asked questions
- Comments
Current conditions
Condition: Partly Cloudy
Pressure: 1,023 hPa
Feel like: 12 °C
Temperature: 13°C
Cloud: 60%
Humidity: 68%
Wind: W - 5 km/h
Visibility: 30.36 km
30 Day Averages and Extremes
- Average high 14.07°C
- Average low 5.1°C
- Hottest day 23°C (24 October 2026)
- Coldest day -1°C (06 November 2026)
- Average humidity 66.6%
- Days with precipitation 18 days
- Highest precipitation 72 mm (31 October 2026)
Yesterday's Data
- Max: 16°C
- Min: 6°C
- Total Precipitation: 0 mm
Temperature and possibility of rain in Sejong over the next 12 hours
Temperature and possibility of rain in Sejong in the coming days
Rainfall in Sejong in the coming days
Sejong Climate Summary
Sejong features a Humid continental, severe dry winter, hot summer (Köppen classification: Dwa), with an average annual temperature of 13.55ºC (56.39ºF), which is about -0.05% lower than the national average for South Korea. Annually, the city experiences approximately 50.06 millimeters (1.97 inches) of rainfall, spread across 84.07 rainy days, accounting for 23.03% of the year.
| Longitude | 37.5518018 |
| Latitude | 127.0736345 |
| Yearly high temperature | 16.82ºC (62.28ºF) |
| Yearly low temperature | 8.49ºC (47.28ºF) |
| Hottest month | August 30.38ºC (86.68ºF) |
| Coldest month | January -6.13ºC (20.97ºF) |
| Yearly precip | 50.06mm (1.97in) |
| Days with rainfall | 84.07 days (23.03%) |
| Driest month | January (61.68%) |
| Wettest month | July (80.05%) |
Weather averages by month
| Month | High / Low (°C) | Rain |
|---|---|---|
| January | 0.36° / -6.13° | 2.36 days |
| February | 3.9° / -3.06° | 2.82 days |
| March | 10.56° / 1.97° | 4.36 days |
| April | 16.7° / 6.92° | 6.18 days |
| May | 23.24° / 12.28° | 6.36 days |
| June | 27.75° / 17.31° | 9.27 days |
| July | 29.23° / 21.58° | 16.27 days |
| August | 30.38° / 22.05° | 16.36 days |
| September | 26.02° / 16.89° | 7.0 days |
| October | 19.82° / 10.83° | 4.09 days |
| November | 11.49° / 4.64° | 5.73 days |
| December | 2.33° / -3.44° | 3.27 days |
Sejong's weather
Frequently asked questions
1. What is the hottest month in Sejong?
August has the highest average monthly temperature (daily mean of 30.38ºC) and January are the coolest (daily mean of -6.13ºC).
2. What should I wear in Sejong today?
For today's mild weather in Sejong, with temperatures between 13ºC to 16ºC (55.4ºF to 60.8ºF), consider wearing:
- Scarf (optional)
- Comfortable jeans or slacks
- Lightweight sweater or cardigan
- Light jacket (for cooler periods)
Temperature
Air quality
Unhealthy for Sensitive Groups air quality, health effects possible for sensitive people, general public usually unaffected
- CO2 596
- CO 1,757
- NH3 0
- NO2 76
- O3 0
- PM10 80
- PM25 50
- SO2 38
- CH4 1,782