Last updated: October 30, 2025
December in Jeju City, South Korea offers a cool maritime climate, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 20°C (68°F). This month sees an average temperature of 9°C (48°F), making it ideal for travelers seeking a brisk winter getaway. Rainfall is common, with approximately 61 mm (2.4 in) of precipitation spread across 10 days, resulting in a humidity level of 71%. As the island transforms into a serene winter landscape, visitors can enjoy the unique charm of Jeju’s natural beauty amidst the cool and refreshing atmosphere.
In December, Jeju City experiences a notable transition into winter, with temperatures dipping to a minimum of 0°C (33°F) and an average of 9°C (48°F). The weather remains relatively mild, peaking at a comfortable 20°C (68°F), marking the end of the fall season. This month showcases a gradual cooling trend from the warmer autumn months, which saw average highs around 22°C (71°F) in November. Visitors can expect a crisp atmosphere ideal for exploring the island's natural beauty, though the chill in the air does hint at the winter season ahead. Overall, December is a time when Jeju City beautifies itself with serene landscapes, making it a charming winter getaway.
December in Jeju City, South Korea, experiences a moderate shift in precipitation patterns as the year draws to a close. With 61 mm (2.4 in) of rain falling over an average of 10 days, December showcases a slight increase from the drier months of November, which recorded just 46 mm (1.8 in) over 7 days. This uptick in precipitation aligns with the overall trend of heavier rainfall in the latter half of the year, peaking in September with a remarkable 298 mm (11.7 in). The consistent, albeit lesser, rainfall in December signals the island's transition into winter, offering a gentle reminder of the dynamic climate that defines Jeju throughout the seasons.
December ushers in a noticeable shift in Jeju City’s humidity levels, with a reading of 71%. This marks a slight decline from the buoyant humidity of 73% recorded in November, as the island transitions from the heavier moisture of the warmer months. Throughout the year, Jeju experiences a gradual rise in humidity that peaks in the summer, reaching an impressive 98% in July. As the seasons change, the humidity begins to wane, creating a more comfortable atmosphere for those visiting in winter. The trend reveals that while December maintains relatively high moisture levels compared to the drier early months, it also serves as a reminder of the island's lush, dynamic climate, which is ever present through every season.
As December rolls into Jeju City, South Korea, the UV Index dips back to 4, categorizing exposure as moderate with a burn time of 30 minutes. This marks a notable decrease from the summer months, where values soared to an extreme of 12. The transition from the high UV levels of previous months, such as 10 in September and 6 in November, reflects the region's seasonal shift towards cooler weather. Visitors can enjoy the outdoor beauty of Jeju while still being mindful of sun exposure; even in December, it's wise to protect your skin. For more details on UV trends in Jeju, check out the Jeju City UV Index.
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As the year wraps up, December in Jeju City sees a pleasant decline in sunshine hours, totaling 203 hours. While this figures lower than the sun-drenched peak months of July and August, which boast an impressive 318 hours, it still reflects a significant amount of daylight for the winter season. Interestingly, December’s sunshine hours follow a downward trend from the bustling late autumn of November, which provided 230 hours of sunlight. On the whole, Jeju’s annual sunshine journey highlights a gradual transition from the vibrant brightness of spring and summer to the softer glow of winter, creating an inviting atmosphere for visitors seeking a tranquil getaway amid the island's stunning landscapes.
In December, Jeju City experiences a 39% chance of sunny weather, marking a slight decline from the more promising 51% in November. As autumn transitions to winter, the overall trend shows a gradual decrease in sunshine, with the sunniest month of October boasting a surprising 56% probability. Following this peak, the likelihood of clear skies dips in the subsequent months, particularly in the heart of summer when July sees a low of just 24%. While December offers a reasonable chance for sunshine, it signals a shift towards the cooler season, reminding visitors to prepare for variable weather as they soak up the unique charm of Jeju during this time.
In December, Jeju City, South Korea, experiences a notable decline in daylight duration, with only 9 hours of sunlight each day. As the year progresses from the bright summer months of June and July, which boast 14 hours of daylight, the transition into winter reveals a steady decrease in natural light. This trend continues into the early months of the year, where January and February each offer just 10 hours. The shift not only highlights the seasonal changes but also sets the stage for the gradual lengthening of days that begins in March, ushering in spring with its promise of renewal and longer daylight.
As December settles over Jeju City, South Korea, the average wind speed reaches a brisk 6.0 m/s (13 mph), signifying a return to the higher velocities seen earlier in the year. This uptick follows a gradual decline from the peak winds of winter in January and February, both registering at 6.5 m/s (14 mph). The winds taper down through the milder months of spring and summer, hitting their lowest point in June at 3.3 m/s (7 mph). However, as autumn arrives, winds pick up momentum again, closing the year with December’s refreshing breeze, reminiscent of the island's earlier, windy days. The shift from the calm summer months back to the robust winds of late fall captures Jeju's dynamic climate beautifully, inviting both locals and visitors to experience the island’s unique charm in this crisp, invigorating season.
Weather in Jeju City varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Jeju City, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather in Jeju City features milder temperatures, with a minimum of 0°C (33°F) and an average of 9°C (48°F), peaking at 20°C (68°F). The month experiences about 61 mm (2.4 in) of precipitation over 10 days, coupled with a humidity level of 71%. Shifting to January, the temperatures drop slightly, with a minimum of -2°C (29°F) and an average of 6°C (44°F), while the maximum remains similar at 19°C (66°F). Precipitation is comparable at 58 mm (2.3 in) over the same number of days, with humidity rising to 72%. For a detailed look at the weather in January, visit Jeju City weather in January.
December and February in Jeju exhibit distinct yet comparable weather patterns. In December, temperatures range from a minimum of 0°C (33°F) to a maximum of 20°C (68°F), with an average of 9°C (48°F). The month sees about 61 mm (2.4 in) of precipitation over approximately 10 days, accompanied by a humidity level of 71%. In contrast, February experiences slightly cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 17°C (63°F), averaging 7°C (44°F). Precipitation is similar, totaling 59 mm (2.3 in) across about 9 days, while the humidity remains relatively stable at 70%. For more detailed insights, check out Jeju City weather in February.
December and March present a notable transition in weather conditions. In December, temperatures range from a minimum of 0°C (33°F) to a maximum of 20°C (68°F), with an average temperature of 9°C (48°F). The month experiences about 61 mm (2.4 in) of precipitation over 10 days and maintains a humidity of 71%. In contrast, March sees slightly warmer temperatures, with a minimum of 3°C (37°F) and a maximum of 18°C (65°F), averaging 10°C (51°F). The precipitation increases to 101 mm (4.0 in) over 11 days, alongside a slightly higher humidity of 73%. This shift indicates a gradual warming and increased rainfall as winter transitions into spring. For more details on the weather in March, check out Jeju City weather in March.
In December, the weather in Jeju City is cooler, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 20°C (68°F) and an average of 9°C (48°F). The month experiences around 61 mm (2.4 in) of precipitation over 10 days, accompanied by a humidity level of 71%. In contrast, April brings a noticeable increase in temperatures, with a minimum of 6°C (43°F) and an average of 13°C (57°F), while the maximum remains similar at 20°C (69°F). However, April also sees higher precipitation levels at 91 mm (3.6 in) over just 7 days, and humidity rises to 83%. For a more detailed look at April weather patterns, visit Jeju City weather in April.
In December, the weather tends to be cooler, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 20°C (68°F) and an average of 9°C (48°F). Humidity is moderately high at 71%, and the month receives about 61 mm (2.4 in) of precipitation over approximately 10 days. Conversely, May brings milder conditions with temperatures starting from a minimum of 10°C (51°F) to a comfortable maximum of 24°C (75°F), averaging around 17°C (63°F). The humidity rises to 89%, and the month experiences higher precipitation totals at 92 mm (3.6 in) over 9 days. For more detailed insights into the climate during this beautiful spring month, you can check out Jeju City weather in May.
When comparing the weather in December and June, striking differences emerge. December features cooler temperatures, with a minimum of 0°C and an average of around 9°C, whereas June enjoys much warmer conditions, with temperatures ranging from a minimum of 16°C to a pleasant average of 21°C. Additionally, June sees a significant increase in precipitation, totaling 141 mm over 10 days, compared to December's 61 mm. The humidity is also notably higher in June at 93%, compared to 71% in December, contributing to a much more tropical feel during the summer month. For more details on June weather in Jeju City, visit Jeju City weather in June.
December and July weather in Jeju City present a stark contrast in temperature and humidity. In December, temperatures range from a chilly 0°C (33°F) at night to a mild 20°C (68°F) during the day, with an average of 9°C (48°F). The month sees about 61 mm (2.4 in) of precipitation over approximately 10 days, along with a relative humidity of 71%. In contrast, July boasts much warmer temperatures, with nighttime lows at 19°C (67°F) and daytime highs soaring to 31°C (88°F), averaging 25°C (77°F). The rainy season intensifies in July, as the city experiences a significant 170 mm (6.7 in) of precipitation over about 14 days, accompanied by high humidity levels of 98%. For a closer look at the July weather specifics, visit Jeju City weather in July.
December and August showcase strikingly different weather patterns. In December, temperatures range from a chilly minimum of 0°C (33°F) to a mild maximum of 20°C (68°F), with an average of 9°C (48°F). The month sees around 61 mm (2.4 in) of precipitation over 10 days, accompanied by a humidity level of 71%. In contrast, August experiences a warm climate with temperatures ranging from a minimum of 22°C (72°F) to a high of 31°C (88°F), averaging 27°C (81°F). This month is significantly wetter, receiving 197 mm (7.7 in) of rain spread across 15 days, with humidity peaking at a staggering 96%. To learn more about the specifics of weather during this month, visit Jeju City weather in August.
When comparing the weather in December and September, significant differences are evident. December experiences cooler temperatures, with averages ranging from a minimum of 0°C (33°F) to a maximum of 20°C (68°F), while September boasts much warmer conditions, with averages from 18°C (65°F) to 28°C (83°F). Additionally, September is characterized by significantly higher precipitation, totaling 298 mm (11.7 in) over about 15 days, compared to December's 61 mm (2.4 in) across just 10 days. The humidity levels also reflect the seasonal changes, with September’s humidity at 84%, slightly higher than December’s 71%. For more details, you can visit Jeju City weather in September.
When comparing the weather in December to that of October, we notice a significant drop in temperatures. December experiences a minimum of 0°C (33°F), with an average temperature of 9°C (48°F) and a maximum of 20°C (68°F), while October boasts milder conditions, with minimums around 11°C (53°F), an average of 19°C (66°F), and highs reaching up to 27°C (81°F). Precipitation levels are higher in October at 109 mm (4.3 in) across 9 days compared to December's 61 mm (2.4 in) over 10 days. The humidity also reflects the changes in season, with October at 78% compared to December's 71%. For more detailed insights, check Jeju City weather in October.
In comparing the weather between November and December, we notice a distinct drop in temperatures as we transition from fall to winter. December's minimum temperature reaches a chilly 0°C (33°F), while November maintains a milder minimum of 6°C (43°F). Average temperatures also decline, with December averaging 9°C (48°F) compared to November's warmer 14°C (57°F). Additionally, December experiences more precipitation, totaling 61 mm (2.4 in) over 10 days, while November sees less rainfall at 46 mm (1.8 in) over 7 days. Humidity levels are slightly lower in December at 71%, compared to November's 73%. Overall, December brings colder and wetter conditions compared to the more temperate November weather. For more details, check out Jeju City weather in November.
December in Jeju City marks the transition into winter, showcasing cooler temperatures compared to the mild weather of previous months. With an average temperature dropping to 9°C (48°F), the island experiences a noticeable chill, especially as it can dip to near freezing at night. While still enjoying occasional warmth with a maximum of 20°C (68°F), this month also sees an increase in precipitation, with about 61 mm recorded over ten days, making it one of the wetter times of the year. The humidity remains relatively high at 71%, adding to the crisp air typical of winter. For a complete look at weather patterns throughout the year, visit Jeju City Climate.