Climate averages 1991–2020
Sejong weather
in March.
A cool, moderately wet month: the 9th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cool month in Sejong: daytime highs average 11.3°C and nights cool to about 0.6°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 49 mm of rain on roughly 7 days, which makes March a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 56 min on an average March day.
The nearest other city in this atlas is Cheongju-si (18 km away). In March its highs average 11.4°C, about as warm as Sejong, with 50 mm of rain.
Among the 79 cities listed in South Korea, Sejong ranks 32nd of 79 for the warmest March highs and joint 33rd of 79 for the driest March (rainfall, lowest first). The mean March high of those 79 cities is 10.9°C; Sejong is 0.4°C warmer than that mean.
From March to April, average highs rise by 6.8°C to 18.1°C, and monthly rainfall rises from 49 mm to 78 mm.
The annual picture
March in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sejong climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.9°C-4.6°C | -4.6°C | 22 | 4.3 | 10.010 h |
| February | 5.7°C-3.2°C | -3.2°C | 31 | 4.4 | 10.811 h |
| March, selected | 11.3°C0.6°C | 0.6°C | 49 | 6.7 | 11.912 h |
| April | 18.1°C6.4°C | 6.4°C | 78 | 7.4 | 13.113 h |
| May | 23.6°C12.3°C | 12.3°C | 86 | 7.5 | 14.114 h |
| June | 27.8°C17.8°C | 17.8°C | 122 | 8.5 | 14.615 h |
| July | 28.9°C21.7°C | 21.7°C | 256 | 16.1 | 14.414 h |
| August | 29.3°C22.3°C | 22.3°C | 226 | 15.0 | 13.614 h |
| September | 25.2°C16.9°C | 16.9°C | 143 | 8.5 | 12.412 h |
| October | 19.4°C9.9°C | 9.9°C | 58 | 4.8 | 11.311 h |
| November | 11.9°C3.0°C | 3.0°C | 43 | 5.9 | 10.310 h |
| December | 4.8°C-2.9°C | -2.9°C | 23 | 4.5 | 9.710 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
March in nearby cities
- Cheongju-si in MarchSouth Korea · 18 kmHigh 11.4°C · Low 0.7°C · 50 mm rain
- Gongju in MarchSouth Korea · 21 kmHigh 11.5°C · Low 1.1°C · 47 mm rain
- Cheonan in MarchSouth Korea · 27 kmHigh 11.1°C · Low 0.5°C · 47 mm rain
- Daejeon in MarchSouth Korea · 28 kmHigh 11.6°C · Low 0.9°C · 53 mm rain
- Asan in MarchSouth Korea · 33 kmHigh 10.7°C · Low 0.3°C · 43 mm rain
- Pyeongtaek in MarchSouth Korea · 48 kmHigh 10.5°C · Low 0.2°C · 41 mm rain
- Hongseong in MarchSouth Korea · 56 kmHigh 10.6°C · Low 0.8°C · 45 mm rain
- Osan in MarchSouth Korea · 65 kmHigh 10.2°C · Low 0.1°C · 39 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sejong) is explained once on the Sejong year overview and on the Sources, method and limits page.