Last updated: October 30, 2025
In January, Daejeon, South Korea experiences a chilly climate characterized by a maximum temperature of 13°C (57°F) and an average of -1°C (31°F). The city can be quite cold at times, with minimum temperatures dropping to -19°C (-2°F). While light precipitation is common, with an average of 23 mm (0.9 in) over 4 days, the humidity levels remain relatively high at 71%. This blend of temperatures and moisture creates a crisp winter atmosphere, perfect for those who enjoy seasonal changes.
In Daejeon, South Korea, January greets residents with a chilly embrace, featuring temperatures that swing from a brisk -19°C (-2°F) at their lowest to a more moderate 13°C (57°F) at the peak of the day. The average temperature hovers around -1°C (31°F), making it one of the coldest months of the year. This winter chill gradually warms as February arrives, showcasing a slight rise in both minimum and average temperatures, hinting at the transition towards spring. As the month progresses, temperatures start to uplift, creating a clear trend towards milder conditions. By March, the minimum temperatures begin to climb further to -5°C (24°F), and average highs reach an inviting 8°C (46°F). This consistent warming trend paves the way for the vibrant blooms of spring that follow, reflecting the region's distinctive seasonal shifts.
In January, Daejeon experiences relatively light precipitation, with just 23 mm (0.9 in) spread across approximately 4 days. This marks one of the driest months of the year, setting a tone of crisp winter air that transitions into slightly wetter conditions by February, where precipitation increases to 35 mm (1.4 in) over an equal number of days. As spring approaches, rainfall begins to pick up noticeably; by March, the volume more than doubles to 63 mm (2.5 in), highlighting a trend of increasing moisture as temperatures rise. This gradual shift continues into the spring months, culminating in the peak rainy season of July and August, where Daejeon sees a dramatic surge in precipitation, with averages of 214 mm (8.4 in) and 221 mm (8.7 in)**, respectively. Observing these trends, it becomes clear that January serves as a gateway to a much wetter climate that characterizes the region's later months.
In January, Daejeon experiences a humidity level of 71%, marking the start of the year with a moderate dampness that sets the tone for the winter months. As the season progresses into February and March, humidity holds steady at 65%, providing a crispness in the air that is characteristic of early spring. However, as April rolls in, humidity rises to 75%, foreshadowing the warmer months ahead. By May, the atmosphere becomes noticeably more humid at 81%, paving the way for a sultry summer. The peak humidity occurs in July and August, both reaching a steamy 91%, creating a tropical feel that challenges even the most seasoned residents. As summer wanes, humidity begins to decrease, dropping to 77% in September and stabilizing around 79% in October and 80% in November, before experiencing a slight reprieve at 74% in December. This pattern illustrates a clear seasonal shift, with humidity peaking in mid-summer and gradually decreasing as the year draws to a close.
In January, Daejeon experiences a moderate UV Index of 3, indicating a relatively safe environment for sun exposure with a burn time of about 30 minutes. As winter transitions into spring, the UV levels gradually rise, reaching 5 in February and climbing to a high 7 in March. This upward trend continues through the spring months, peaking at a very high 9 in both April and May, where the burn time decreases significantly to just 15 minutes. As summer approaches, the index escalates to the extreme, hitting a maximum of 12 in August, demanding caution with only 10 minutes of safe exposure. Following this peak, there is a gradual decline as the year progresses, with the index returning to moderate levels of 5 in November and 3 in December, showcasing a clear seasonal pattern in Daejeon's UV exposure. For more detailed insights, visit Daejeon UV Index.
UV Risk Categories
In Daejeon, South Korea, January greets the year with 194 hours of sunshine, a modest start compared to the subsequent months. As winter transitions into spring, the hours of sunlight steadily increase, reaching 236 hours in February and 276 hours by March. April continues this uplifting trend, with sunshine peaking at 279 hours, while May shines even brighter at 303 hours, showcasing the region's vibrant springtime. The sunshine remains plentiful in June, with 301 hours, before a gradual decline begins in the summer months. July and August bring a slight dip to 265 and 273 hours respectively, as the heat of summer settles in. As the year progresses into autumn, sunshine levels taper off, with 229 hours in November and 236 hours in December, rounding out the year with a promise of brighter days ahead. Overall, Daejeon's sunshine journey in January sets the stage for a gradual crescendo of light, culminating in a radiant May.
In Daejeon, South Korea, the likelihood of sunny weather in January stands at 45%, establishing a relatively optimistic start to the year. This percentage is notably higher than the subsequent months of March and May, which dip to 40% and 36%, respectively. As winter progresses into February, the chance of sunlight creeps upward to 49%, suggesting that the skies brighten slightly as the season transitions. Interestingly, the sunny probabilities reach their peak in late autumn, with 60% in December and 59% in November, indicating a seasonal variation where brighter days are more prevalent as the year comes to a close. Overall, while January offers a decent chance for sun, it is clear that the sun shines its brightest during the transition from fall to winter in Daejeon.
In Daejeon, South Korea, January ushers in a modest 9 hours of daylight, marking the depths of winter. As the month progresses into February, the sun begins to linger slightly longer, adding an hour of light. This gradual increase continues into March, where daylight stretches to 11 hours, signaling the approach of spring. April surprises residents with a notable leap to 13 hours, while May and June maintain this brightness at 14 hours, creating vibrant days teeming with activity. As summer wanes in July and August, daylight only slightly diminishes, with both months offering the same generous 14 hours. The trend then shifts in September, with sunlight gently retreating to 12 hours, followed by a steady decline through the fall months of October and November, landing back at 10 hours in November. Finally, December wraps up the year with another return to 9 hours of daylight, completing the cycle and heralding the return of winter’s embrace.
In Daejeon, South Korea, January experiences a gentle average wind speed of 2.8 m/s (6 mph), setting a calm tone for the winter month. As the year unfolds, wind speeds fluctuate slightly, with February witnessing a notable increase to 3.3 m/s (7 mph), hinting at the approaching spring. March, however, sees a dip back to 2.5 m/s (6 mph), consistent with the typically transitional nature of early spring. Interestingly, the trend reveals that the warm months leading to June often see a decrease in wind speed, stabilizing at 2.1 m/s (5 mph) from June through October. As the year cools off again in November, winds pick up slightly to 2.5 m/s (6 mph), before a modest rise to 2.7 m/s (6 mph) in December. This cycle of gentle winds reflects the tranquil yet dynamic atmosphere of Daejeon’s seasons, offering a unique blend of calm and activity throughout the year.
Weather in Daejeon varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Daejeon, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February present notable differences in weather patterns. January is characterized by colder temperatures, with an average low of -19°C (-2°F) and a maximum of 13°C (57°F), while February sees a slight improvement, with averages ranging from -15°C (6°F) to a high of 21°C (71°F). Precipitation increases in February to 35 mm (1.4 in), compared to January's 23 mm (0.9 in), yet both months have similar precipitation days at 4. Additionally, humidity levels are slightly lower in February at 65%, compared to January's 71%. For a closer look at February’s climate, visit Daejeon weather in February.
In January, Daejeon experiences frigid temperatures, with a minimum of -19°C (-2°F) and an average of -1°C (31°F), giving way to a maximum of 13°C (57°F). The month sees relatively low precipitation, with only 23 mm (0.9 in) occurring over 4 days, and a humidity level of 71% adds to the cold atmosphere. In contrast, March ushers in a significant warming trend, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 24°C (75°F) and an average of 8°C (46°F). Precipitation also increases to 63 mm (2.5 in) over 7 days, while humidity drops slightly to 65%. For more detailed information, check out Daejeon weather in March.
In January, the weather is notably cold, with temperatures ranging from a frigid minimum of -19°C (-2°F) to a maximum of just 13°C (57°F), and an average of -1°C (31°F). The month experiences 23 mm (0.9 in) of precipitation over an average of 4 days, alongside a humidity level of 71%. In contrast, April ushers in a much milder climate, with temperatures varying from a minimum of -1°C (30°F) to a warm maximum of 29°C (85°F) and an average of 13°C (56°F). This month is also wetter, receiving 66 mm (2.6 in) of precipitation across 6 days and a slightly higher humidity of 75%. For more details on April's weather, check out Daejeon weather in April.
When comparing the weather in January and May, there is a stark contrast in temperatures and overall climate. January experiences chilly conditions with average temperatures hovering around -1°C (31°F) and lows dipping as far as -19°C (-2°F). In contrast, May brings a significant increase in warmth, with average temperatures rising to 18°C (65°F) and highs reaching up to 31°C (89°F). Additionally, May sees increased precipitation at 82 mm (3.2 in) over 9 days, compared to January's 23 mm (0.9 in) spread across just 4 days. Humidity also rises slightly from 71% in January to 81% in May. For more details on May weather specifically, you can check Daejeon weather in May.
January and June in Daejeon present a striking contrast in weather. In January, temperatures can plunge as low as -19°C (-2°F), with an average temperature around -1°C (31°F) and maximums reaching 13°C (57°F). The month sees relatively low precipitation, totaling 23 mm (0.9 in) over just 4 days, accompanied by a humidity level of 71%. In stark contrast, June experiences much warmer weather, with minimum temperatures around 11°C (52°F), averaging 23°C (73°F), and soaring to maximums of 35°C (95°F). It is also wetter, with precipitation at 97 mm (3.8 in) spread over 8 days and higher humidity at 85%. For more specific details about June's weather, check out Daejeon weather in June.
In January, the weather is cold and crisp, with temperatures ranging from a frigid minimum of -19°C (-2°F) to a maximum of 13°C (57°F), and an average temperature around -1°C (31°F). Precipitation is relatively low at 23 mm (0.9 in) over just 4 days, while the humidity hovers at a moderate 71%. In contrast, July brings a dramatic shift as temperatures soar, with a minimum of 17°C (62°F) and maxing out at a sweltering 38°C (100°F), resulting in an average temperature of 26°C (78°F). The month is characterized by significantly higher rainfall at 214 mm (8.4 in) spread over 16 days and high humidity levels reaching 91%. For more details about the weather conditions in July, you can visit Daejeon weather in July.
January and August in Daejeon present stark contrasts in weather. January experiences frigid temperatures, with averages hovering around -1°C (31°F) and nighttime lows plummeting to -19°C (-2°F), while only receiving minimal precipitation of 23 mm (0.9 in) over just four days. In contrast, August boasts a much warmer climate, with averages reaching 27°C (80°F) and highs soaring up to 39°C (102°F). This month is also characterized by significant rainfall, totaling 221 mm (8.7 in) across 16 days, accompanied by high humidity levels of 91%. For more details, you can check Daejeon weather in August.
January and September present two starkly contrasting weather experiences. In January, temperatures plummet, ranging from a chilling minimum of -19°C (−2°F) to a milder maximum of 13°C (57°F), with an average around -1°C (31°F). This month sees minimal precipitation of just 23 mm (0.9 in) over four days, with humidity sitting at 71%. In contrast, September offers a much warmer climate, with temperatures ranging from a comfortable 9°C (49°F) to a sweltering 30°C (87°F), and an average of 21°C (70°F). Rainfall increases significantly during this month, totaling 176 mm (6.9 in) across nine days, and humidity rises slightly to 77%. For more details, check Daejeon weather in September.
In January, Daejeon experiences significantly colder temperatures, with a minimum of -19°C (−2°F) and an average of -1°C (31°F), while October sees milder conditions, beginning at 0°C (33°F) and peaking at an average of 15°C (59°F). The maximum temperatures in January reach 13°C (57°F), compared to a warm 31°C (88°F) in October. Precipitation is also notably higher in October, with 68 mm (2.7 in) over 5 days, while January has only 23 mm (0.9 in) across 4 days. Humidity levels rise slightly from January's 71% to October's 79%, reflecting the transition from winter to autumn. For more detailed information, you can refer to Daejeon weather in October.
In January, the weather is considerably colder, with temperatures ranging from a minimum of -19°C (-2°F) to a maximum of 13°C (57°F), averaging around -1°C (31°F). The month experiences lower precipitation, totaling 23 mm (0.9 in) over just four days, and the humidity averages at 71%. In contrast, November offers milder temperatures with a minimum of -4°C (24°F) and a maximum of 21°C (70°F), averaging 8°C (47°F). There is slightly more precipitation in November, amounting to 36 mm (1.4 in) over five days, alongside a higher humidity level of 80%. For more details, check out Daejeon weather in November.
In January, the temperatures are generally colder, with a minimum of -19°C (-2°F) and an average of -1°C (31°F), compared to December's milder minimum of -14°C (6°F) and average of 1°C (34°F). Interestingly, both months experience similar levels of precipitation, with January receiving 23 mm (0.9 in) and December slightly higher at 26 mm (1.0 in), with rainfall occurring on four days in each month. Additionally, humidity levels are quite comparable, with January at 71% and December at 74%. For a more detailed view of December's weather, you can explore Daejeon weather in December.
As January settles over Daejeon, it brings a unique chill that starkly contrasts with the more temperate months of the year. With average temperatures hovering around freezing, the city experiences its coldest days, occasionally dipping to frigid lows. The chill is accompanied by increased humidity, which can make the air feel even colder. While snowfall is minimal, the dry, crisp air is punctuated by occasional rain, leading to about four days of precipitation. This distinct winter climate makes January a time for bundling up and enjoying the serene beauty of Daejeon's winter landscape, a stark difference from the warmer, more vibrant seasons that follow. For a deeper understanding of how winter shapes the city's climate, explore Daejeon Climate.