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: Mainly Clear
Pressure: 1,007 hPa
Feel like: 24 °C
Temperature: 22°C
Cloud: 33%
Humidity: 83%
Wind: NE - 7 km/h
Visibility: 18.22 km
30 Day Averages and Extremes
- Average high 32.4°C
- Average low 23.87°C
- Hottest day 36°C (04 August 2026)
- Coldest day 20°C (11 August 2026)
- Average humidity 76.47%
- Days with precipitation 24 days
- Highest precipitation 65 mm (26 July 2026)
Yesterday's Data
- Max: 33°C
- Min: 24°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 very hot weather in Sejong, with the high temperatures above 31ºC (87.8ºF), consider wearing:
- UV-blocking sunglasses
- Broad-brimmed sun hat
- Sleeveless tops or vests
- Lightweight, loose-fitting shorts
Temperature
Air quality
Satisfactory air quality, minimal pollution, low risk
- CO2 451
- CO 130
- NH3 0
- NO2 16
- O3 36
- PM10 10
- PM25 7
- SO2 7
- CH4 1,558