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: 25 °C
Temperature: 22°C
Cloud: 31%
Humidity: 72%
Wind: W - 2 km/h
Visibility: 16.86 km
30 Day Averages and Extremes
- Average high 27.67°C
- Average low 18.83°C
- Hottest day 31°C (15 June 2026)
- Coldest day 15°C (08 June 2026)
- Average humidity 74.53%
- Days with precipitation 28 days
- Highest precipitation 90 mm (19 June 2026)
Yesterday's Data
- Max: 28°C
- Min: 18°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 26ºC (78.8ºF), consider wearing:
- UV-protective sunglasses
- Open-toed sandals or light sneakers
- Wide-brimmed sun hat
- Lightweight t-shirt or tank top
Temperature
Air quality
Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals
- CO2 471
- CO 338
- NH3 0
- NO2 52
- O3 37
- PM10 16
- PM25 15
- SO2 19
- CH4 1,959