Climate Chart of Daejeon, South Korea

Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023

For Daejeon, South Korea, the climate data describe 2013–2023. Monthly mean temperatures range from January at -1.0 °C to August at 26.3 °C, giving a broad view of the year's thermal variation without describing daytime extremes. The annual pattern also includes marked changes in daily rainfall, sunshine duration and snowfall, so visitors may want to weigh these conditions separately when planning.

Climate overview

Temperature

The coolest monthly mean is January at -1.0 °C, while the warmest is August at 26.3 °C. These are monthly averages, not daytime highs or lows, so they describe the broad temperature character of each month rather than the range a visitor might encounter on a particular day. Across the calendar-month means, the unweighted mean is 13.2 °C. It offers a compact summary of the monthly averages, but is not a day-weighted annual average.

Rain

Mean daily rainfall is highest in July at 7.57 mm/day, and lowest in January at 0.55 mm/day. These daily means indicate the contrast in typical rainfall amounts between the months; they are not monthly totals and do not show how often rain falls. The unweighted mean across the monthly daily-rainfall means is 2.97 mm/day. It is useful as a broad summary, but cannot describe a particular day's weather or guarantee dry conditions in any month.

Sunshine

Mean daily sunshine reaches its highest level in May at 10.07 hours/day, and its lowest in December at 6.91 hours/day. This describes average sunshine duration, not day length or a promise of clear skies on a given day. The unweighted mean of the monthly sunshine-duration means is 8.38 hours/day per day, providing an overall reference without representing every month equally by its number of days.

Snow

Mean daily snowfall is highest in February at 1.11 mm/day. This is an average amount, not a measure of snowy-day frequency, snow depth, snow cover or conditions for skiing. The unweighted mean across the monthly daily-snowfall means is 0.32 mm/day. It summarizes the monthly figures but does not establish how often snowfall occurs.

Best Travel Time Guide for Daejeon, South Korea: Ideal Seasons and Weather Insights

For a visit prioritising cooler monthly averages, January is the relevant option, with a mean temperature of -1.0 °C; this is not a forecast of daytime conditions, so check forecasts closer to travel and prepare for day-to-day variation. Visitors prioritising lower average rainfall can consider January, when mean daily rainfall is 0.55 mm/day. For rain preparation, note that the highest monthly mean is in July at 7.57 mm/day; neither figure tells you the frequency of wet days or guarantees the conditions of a particular trip.

For outdoor sightseeing planned around average sunshine duration, May has the highest mean at 10.07 hours/day, while December has the lowest at 6.91 hours/day. These averages can help frame daylight planning, but sunshine duration is not day length and does not guarantee clear weather. Snowfall is highest by mean daily amount in February at 1.11 mm/day. That average alone cannot indicate snowy-day frequency, depth or cover, so it is not enough to assess specific winter travel or skiing conditions.

Climate Data Overview for Daejeon, South Korea

Explore the comprehensive climate data for Daejeon, South Korea. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.

Month	Average: Temperature °C	Rain (mm) / day	Snow (mm) / day	Sunshine (h) / day
Jan	-1.0	0.55	1.03	7.21
Feb	1.1	0.84	1.11	7.94
Mar	7.1	1.57	0.72	8.96
Apr	12.8	2.56	0.01	9.04
May	18.5	2.48	0.00	10.07
Jun	23.1	3.38	0.00	9.80
Jul	25.7	7.57	0.00	8.24
Aug	26.3	7.40	0.00	8.83
Sep	21.3	4.90	0.00	8.15
Oct	14.7	2.00	0.00	8.30
Nov	7.8	1.61	0.16	7.09
Dec	0.7	0.81	0.79	6.91
Average	13.2	2.97	0.32	8.38