Climate averages 1991–2020
Daejeon weather
in January.
A cold, fairly dry month: the coolest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Daejeon: daytime highs average 3.4°C and nights cool to about -4.1°C. By daytime temperature it is the coolest month of the year.
Expect about 24 mm of rain on roughly 5 days, which makes January a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 59 min on an average January day.
The nearest other city in this atlas is Gongju (26 km away). In January its highs average 3.3°C, about as warm as Daejeon, with 22 mm of rain.
Among the 79 cities listed in South Korea, Daejeon ranks joint 35th of 79 for the warmest January highs and joint 44th of 79 for the driest January (rainfall, lowest first). The mean January high of those 79 cities is 3.6°C; Daejeon is 0.2°C cooler than that mean.
From January to February, average highs rise by 2.7°C to 6.2°C, and monthly rainfall rises from 24 mm to 33 mm.
The annual picture
January 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
Daejeon climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 3.4°C-4.1°C | -4.1°C | 24 | 4.8 | 10.010 h |
| February | 6.2°C-2.8°C | -2.8°C | 33 | 4.8 | 10.811 h |
| March | 11.6°C0.9°C | 0.9°C | 53 | 7.4 | 11.912 h |
| April | 18.2°C6.6°C | 6.6°C | 78 | 7.7 | 13.113 h |
| May | 23.5°C12.4°C | 12.4°C | 86 | 7.8 | 14.114 h |
| June | 27.6°C17.9°C | 17.9°C | 123 | 8.9 | 14.615 h |
| July | 28.8°C21.8°C | 21.8°C | 230 | 15.7 | 14.414 h |
| August | 29.3°C22.4°C | 22.4°C | 197 | 15.0 | 13.514 h |
| September | 25.2°C17.0°C | 17.0°C | 138 | 8.4 | 12.412 h |
| October | 19.6°C10.1°C | 10.1°C | 56 | 5.1 | 11.311 h |
| November | 12.3°C3.4°C | 3.4°C | 41 | 6.2 | 10.310 h |
| December | 5.3°C-2.4°C | -2.4°C | 25 | 5.0 | 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
January in nearby cities
- Gongju in JanuarySouth Korea · 26 kmHigh 3.3°C · Low -3.9°C · 22 mm rain
- Sejong in JanuarySouth Korea · 28 kmHigh 2.9°C · Low -4.6°C · 22 mm rain
- Cheongju-si in JanuarySouth Korea · 33 kmHigh 3.0°C · Low -4.6°C · 22 mm rain
- Cheonan in JanuarySouth Korea · 55 kmHigh 2.7°C · Low -4.7°C · 22 mm rain
- Asan in JanuarySouth Korea · 59 kmHigh 2.6°C · Low -4.8°C · 21 mm rain
- Iksan in JanuarySouth Korea · 59 kmHigh 3.7°C · Low -3.5°C · 23 mm rain
- Jeonju in JanuarySouth Korea · 62 kmHigh 3.7°C · Low -3.8°C · 29 mm rain
- Sangju in JanuarySouth Korea · 70 kmHigh 3.4°C · Low -4.4°C · 21 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 Daejeon) is explained once on the Daejeon year overview and on the Sources, method and limits page.