Last updated: October 30, 2025
January in Yongsan, South Korea presents a chilly backdrop characterized by a maximum temperature of 13°C (55°F) and an average low of -1°C (30°F), dipping as low as -20°C (-4°F) on the coldest nights. This month typically experiences 25 mm (1.0 in) of precipitation over approximately 4 days, contributing to a 71% humidity level that enhances the crisp winter ambiance. Whether you're exploring the charming streets or enjoying the serene parks, prepare for a month where warm layers and a cozy attitude will make for an enjoyable winter experience.
January in Yongsan, South Korea, ushers in a chill that ranges from a brisk -20°C (-4°F) to a moderately warm 13°C (55°F), setting the stage for a month characterized by cold temperatures. The average hovers around -1°C (30°F), hinting at the frigid air that permeates the city. As the month progresses, the temperatures gradually climb, paving the way for February's slight warmth. However, this transition is accompanied by lingering cold snaps, suggesting a noteworthy trend: winter is reluctant to let go. The consistent drop in minimum temperatures from January to February indicates a slow thaw, while the average temperatures remain deceptively low for those accustomed to milder winters. This month serves as a crisp reminder of South Korea's seasonal extremes, with January's chilling embrace gradually yielding to the promise of spring in the following months.
In Yongsan, South Korea, January typically sees low precipitation, with an average of just 25 mm (1.0 in) falling over a mere 4 days. This pattern sets the tone for the winter season, as the subsequent months gradually bring an increase in rainfall. February follows closely with 34 mm (1.3 in) and the same number of wet days, while precipitation levels begin to rise more significantly in March with 65 mm (2.5 in) over 8 days. The spring months of April and May continue this upward trend, reaching 69 mm (2.7 in) and 82 mm (3.2 in), respectively. As summer arrives, Yongsan experiences a dramatic spike in rainfall, particularly in July and August, where totals peak at 222 mm (8.8 in) and 229 mm (9.0 in), showcasing the region's distinct wet season. This cyclical shift from the drier winter months to the lush, rain-soaked summer underscores the region's diverse climatic patterns and influences local flora and activities throughout the year.
In Yongsan, South Korea, January greets residents with a relatively high humidity level of 71%, setting the tone for a winter characterized by moisture in the air. As the months progress into February and March, humidity gradually declines to 66% and 64%, respectively, offering a brief respite. However, this trend reverses come April, when humidity spikes to 74%, and heads into the summer months, where it reaches a peak at 91% in both July and August. Following this, the humidity begins to taper off slowly, falling to 77% in September and stabilizing around the 78% to 80% range from October through December. Overall, Yongsan experiences a distinct cycle of increasing humidity as winter fades into spring and summer rolls in, only to see it moderate again as autumn approaches.
In Yongsan, South Korea, January sees a UV Index of 3, classified as moderate, which means that while some sun protection is necessary, the risk of harm from unprotected sun exposure is relatively low, with a burn time of about 30 minutes. As winter transitions to spring, February's UV readings rise to 5, yet the burn time remains consistent at 30 minutes. March marks a noticeable increase with a UV Index of 7, elevating the exposure to high risk, with a reduced burn time of 25 minutes. As spring continues, both April and May experience very high UV levels of 9, where the burn time decreases further to just 15 minutes. The summer months hit their peak from June to August, reaching extreme UV Index levels of 11 and 12, necessitating quick action against sun exposure with burn times dropping to as low as 10 minutes. The trend rolls back in September and October, where UV levels fall to 10 and 7, respectively, indicating a gradual decline in sun intensity, before returning to moderate levels again in November and December. For detailed insights, check out the Yongsan UV Index.
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In Yongsan, South Korea, January marks the beginning of the year with 194 hours of sunshine, signaling the start of the colder months. As the city transitions into February, sunshine increases to 236 hours, hinting at the gradually warming weather. March and April continue this trend, boasting 276 and 279 hours respectively, as spring approaches, bringing longer days filled with light. The warmth peaks in May and June with a delightful 303 and 301 hours of sunshine, inviting outdoor activities and blossoming landscapes. However, as summer wanes, July and August see a slight dip, offering 265 and 273 hours, before sunshine begins to retreat into the fall. September and October maintain a comfortable balance with 243 and 258 hours, while November and December close the year with more subdued but still pleasant hours of 229 and 236. Overall, Yongsan's sunshine hours reflect a vibrant rhythm, from the cold winter beginnings to the radiant summer peaks, fostering a strong connection between the changing seasons and community life.
In Yongsan, South Korea, January offers a 47% chance of sunny weather, making it a promising start to the year. This likelihood of sunshine slightly improves in February, reaching 50%, hinting at a gradual transition toward brighter days as winter wanes. However, the weather pattern shifts as spring approaches; March sees a dip in sunny days to 39%, while April and May linger around 42% and 36%, respectively. As we progress into the summer months, the chances of clear skies take a further hit, dropping to 25% in July and 27% in August. Interestingly, the trend begins to reverse in fall, with October and November seeing a resurgence, marked by 50% and 60% sunny days. Overall, January is a solid month for sunshine compared to the deeper winter months that follow, yet the promise of longer, sunnier days looms ahead.
In January, Yongsan, South Korea, experiences approximately 9 hours of daylight, marking the year's shortest days. However, as the month progresses into February, daylight increases to 10 hours, signaling the gradual approach of spring. This upward trend continues through March, with 11 hours of daylight, and reaches a peak of 14 hours by May and June. As summer transitions to fall, daylight begins to wane, with August seeing a slight drop back to 13 hours. The descent continues, bringing 12 hours in September, 11 hours in October, and back down to 10 hours in November, before returning to 9 hours in December. This cyclical pattern beautifully showcases the annual rhythm of daylight in Yongsan, reflecting the changing seasons and inviting a sense of renewal and reflection throughout the year.
In Yongsan, South Korea, January ushers in a gentle average wind speed of 2.9 m/s (6 mph), setting a calm tone for the year ahead. As winter lingers, February experiences a slight uptick to 3.4 m/s (8 mph), hinting at the season's last breaths before spring's arrival. However, as the days lengthen and temperatures rise, March and April see a subtle dip and rise, stabilizing around 2.5 to 3.0 m/s. The winds remain predominantly mild throughout early summer, with July and August witnessing the most tranquil breezes of just 1.9 m/s (4 mph). Interestingly, this trend of soft winds continues into October. Yet, as the year winds down, a slight resurgence in wind speeds occurs in November and December, culminating back to January's starting pace. Overall, Yongsan’s winter months reveal a pattern of gentle winds, fostering a peaceful atmosphere that reflects the heartbeat of the season.
Weather in Yongsan varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Yongsan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, the weather is significantly colder, with average temperatures hovering around -1°C (30°F), while February sees a slight warming trend with an average temperature of 1°C (34°F). The minimum temperature in January dips to a chilly -20°C (-4°F), compared to a milder -15°C (5°F) in February. Precipitation increases slightly in February, measuring 34 mm (1.3 in) compared to January’s 25 mm (1.0 in), although both months experience precipitation on about four days. Additionally, humidity is a bit higher in January at 71%, while February has a lower humidity level of 66%. For more detailed information, check out Yongsan weather in February.
In January, the temperatures are considerably colder, with a minimum of -20°C (-4°F) and an average of -1°C (30°F), while March experiences a much milder climate, featuring a minimum of -5°C (23°F) and an average of 8°C (46°F). The maximum temperatures in March can reach up to 24°C (75°F), significantly warmer than January's peak of 13°C (55°F). Additionally, March sees increased precipitation, totaling 65 mm (2.5 in) over 8 days, compared to January's 25 mm (1.0 in) over just 4 days. The humidity also drops slightly from January's 71% to March's 64%. For more details on the weather patterns during this month, check out Yongsan weather in March.
In January, temperatures are notably colder, with a minimum reaching -20°C (-4°F) and an average of -1°C (30°F), while the maximum temperature is 13°C (55°F). This month typically experiences relatively low precipitation at 25 mm (1.0 in) over four days and a humidity level of 71%. In contrast, April brings a significant warming trend, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 29°C (85°F) and an average of 13°C (55°F). The precipitation increases to 69 mm (2.7 in) over six days, accompanied by a slightly higher humidity of 74%. For more details, check out Yongsan weather in April.
In January, the weather is characterized by its cold temperatures, with lows dipping to -20°C (-4°F) and an average temperature around -1°C (30°F). The maximum temperature reaches a modest 13°C (55°F), accompanied by low precipitation of 25 mm (1.0 in) over just four days and humidity hovering at 71%. In stark contrast, May warms up significantly, featuring minimums of 4°C (40°F) and average temperatures climbing to 18°C (65°F). With highs reaching up to 31°C (89°F), May experiences much higher precipitation of 82 mm (3.2 in) spread over eight days, alongside a slight increase in humidity to 79%. For more details, check out Yongsan weather in May.
In January, the weather is cold with temperatures dropping as low as -20°C (-4°F) and averaging around -1°C (30°F). The maximum temperature reaches a moderate 13°C (55°F) with low precipitation of 25 mm (1.0 in) over just 4 days, accompanied by a humidity level of 71%. In contrast, June boasts much milder and warmer conditions, with temperatures ranging from a minimum of 11°C (52°F) to a hot maximum of 34°C (94°F), averaging 22°C (73°F). However, it experiences higher precipitation of 102 mm (4.0 in) spread across 8 days, and humidity increases slightly to 82%. Overall, while January is characterized by freezing temperatures and low moisture, June offers a starkly different climate that is warm and humid. For more details, check out Yongsan weather in June.
In January, the weather is typically cold and dry, with temperatures ranging from a chilling -20°C to a mild 13°C, and only 25 mm of precipitation over four days, resulting in a relatively low humidity of 71%. In stark contrast, July brings a heat wave, with temperatures soaring between 17°C and a sweltering 36°C, accompanied by significant rainfall totaling 222 mm over 16 days, creating a humid atmosphere with levels reaching 91%. For a detailed look at what to expect during the summer months, check out Yongsan weather in July.
In January, the weather is characterized by frigid temperatures, ranging from a minimum of -20°C (-4°F) to a maximum of 13°C (55°F), with an average of -1°C (30°F). The month typically sees low precipitation of about 25 mm (1.0 in) over just four days, and a humidity level of 71%, creating a cold and dry atmosphere.
In stark contrast, August experiences much warmer conditions with minimum temperatures around 16°C (60°F) and maximums soaring up to 38°C (100°F), averaging at a balmy 26°C (79°F). The month is significantly wetter, recording about 229 mm (9.0 in) of rainfall spread across 16 days, paired with high humidity levels of 91%, leading to a muggy and often stormy environment. For more details, you can check Yongsan weather in August.
January and September showcase a stark contrast in weather patterns. In January, temperatures are frigid, with a minimum of -20°C (-4°F) and an average around -1°C (30°F), while the maximum reaches only 13°C (55°F). The month sees limited precipitation, with only 25 mm (1.0 in) and humidity at 71%, indicating a dry and cold atmosphere. Conversely, September experiences a much milder and warmer climate, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 30°C (87°F) and an average of 21°C (70°F). This month is characterized by increased rainfall, totaling 182 mm (7.2 in) over 10 days, and slightly higher humidity at 77%. For further insights on weather conditions, you can explore Yongsan weather in September.
January and October present stark contrasts in weather. In January, temperatures plunge to a chilling minimum of -20°C (-4°F), with an average of -1°C (30°F) and a maximum of 13°C (55°F). Precipitation is minimal, amounting to only 25 mm (1.0 in) over just four days, while humidity sits at 71%. In contrast, October boasts much milder conditions, with temperatures ranging from a minimum of 0°C (32°F) to a pleasant average of 14°C (58°F), peaking at a maximum of 31°C (88°F). Rainfall increases to 73 mm (2.9 in) over six days, and humidity rises slightly to 78%. For a closer look at October weather, visit Yongsan weather in October.
In January, temperatures can plummet to a minimum of -20°C (-4°F), with an average of -1°C (30°F) and a maximum of 13°C (55°F), making it one of the coldest months of the year. In contrast, November enjoys milder conditions, where temperatures range from a minimum of -5°C (23°F) to a more comfortable maximum of 21°C (70°F), averaging 8°C (46°F). Additionally, January sees about 25 mm (1.0 in) of precipitation over just 4 days with a humidity level of 71%, whereas November has slightly higher precipitation at 31 mm (1.2 in) over 5 days and an increased humidity of 80%. For more detailed insights about the weather in November, you can check out Yongsan weather in November.
In comparing the weather between January and December, January tends to be colder, with average temperatures hovering around -1°C (30°F), while December sees slightly milder conditions with an average of 1°C (33°F). January experiences lower minimum temperatures, dipping to -20°C (-4°F) compared to December’s minimum of -13°C (8°F). Precipitation levels are quite similar, with January receiving 25 mm (1.0 in) over 4 days and December slightly less at 24 mm (1.0 in) over 3 days. Humidity is also marginally higher in December at 76%, compared to January’s 71%, contributing to a chillier atmosphere during the first month of the year. For a more detailed look into December's weather patterns, you can visit Yongsan weather in December.
January in Yongsan presents a distinctive weather profile characterized by its chilly temperatures and notable humidity. With an average temperature that dips significantly lower than other months, it emphasizes the cold winter season, making it one of the coldest times of the year. The frequency of precipitation is relatively low, yet when it occurs, it adds to the cool, crisp atmosphere. In contrast to the more temperate conditions of spring and summer, January's weather invites residents and visitors alike to engage in winter activities and embrace the seasonal charm. For a deeper understanding of Yongsan's climate throughout the year, be sure to explore Yongsan Climate.