Last updated: August 21, 2025
In December, Tsushima, Japan experiences a mix of winter chill and moderate warmth, with temperatures ranging from a maximum of 20°C (68°F) to a minimum of -5°C (24°F), averaging around 7°C (45°F). This transitional period brings about 68 mm (2.7 in) of precipitation over the course of the month, typically spread across 7 days, contributing to the island's 83% humidity. Visitors can expect cool, damp conditions that provide a unique, serene atmosphere, ideal for exploring the island's stunning natural beauty and rich cultural heritage.
In December, Tsushima, Japan experiences a notable shift in temperatures as winter fully settles in. The month opens with chilly minimums around -5°C (24°F), echoing the cold of January, while average temperatures rise slightly to 7°C (45°F), giving a hint of the milder days ahead. The maximum can reach 20°C (68°F), providing a refreshing break during the colder season. Overall, December serves as a transitional period, balancing brisk winter nights with mild daytime warmth, setting the stage for the colder months while still allowing for occasional moments of comfort.
In December, Tsushima, Japan, experiences a shift as precipitation reaches 68 mm (2.7 in) over approximately 7 days. This increase from November's 61 mm heralds the arrival of winter, though it remains mild compared to the heavier rains of summer. The month serves as a transitional period, where the cooler weather contributes to a noticeable dip in total rainfall compared to the peak months of July and August, yet it still provides enough moisture to nurture the island's lush landscapes. As the year closes, December's precipitation is a gentle reminder of the seasonal changes, blending the remnants of autumn with the onset of winter.
In December, Tsushima, Japan, experiences a humidity level of 83%, maintaining a trend of relatively high moisture in the air as the year comes to a close. Following the peak of 93% in July, humidity levels gradually decrease, with a noticeable drop in March to 74%, before rising again. Despite this fluctuation, December's humidity remains consistent with the preceding months, reflecting a mild climate typical for winter. As the year transitions from fall to winter, the persistent humidity creates a unique atmosphere, often accompanied by chilly breezes and an embracing sense of calm.
In December, Tsushima experiences a notable decline in the UV Index, dropping to 3 which categorizes it as moderate with a burn time of 30 minutes. This represents a shift from the high extreme levels seen in the summer months, such as June and July, where the UV Index peaked at 11. As winter approaches, residents and visitors can enjoy sunnier days with lower sun exposure risks, marking a more forgiving time for outdoor activities. This trend of decreasing UV levels is a welcome reprieve after months of intense sunlight, encouraging a more cautious yet enjoyable experience in the outdoors. For more details on the UV Index throughout the year, visit Tsushima UV Index.
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In December, Tsushima, Japan, experiences 223 hours of sunshine, marking the close of a year filled with varied light patterns. The sunniest months are from May to August, where the hours peak dramatically, exemplifying the island's vibrant summer days with 290 and 300 hours respectively. As autumn transitions into winter, the daylight begins to taper off, yet December retains a considerable amount of sunlight compared to the earlier months, following a steady decrease from peak levels in summer. Notably, December's sunshine hours align closely with November’s 239 hours, hinting at a gentle decline rather than a sharp drop, offering a soft warmth as the year winds down. This trend captures Tsushima's enchanting climate, where even in winter, the sun's presence is felt, ensuring a delightful balance throughout the changing seasons.
In December, Tsushima, Japan, enjoys a 53% chance of sunny weather, offering a pleasant reprieve as the year draws to a close. This represents a slight increase from November's 59%, indicating that while the sun may be less frequent than in the autumn months, there is still a reliable opportunity for clear skies. Throughout the year, the likelihood of sunshine tends to fluctuate, with the summer months often yielding lower percentages, particularly in June and July. December's weather thus positions it as a relatively favorable time for those seeking sunshine, contrasting with the trend of diminishing sunny days earlier in the year. Overall, while not the sunniest season, December provides a hopeful glimmer for sunshine seekers amidst the winter chill.
As December unfolds in Tsushima, Japan, daylight takes a noticeable dip, providing just 9 hours of sunlight. This decline marks the season's shortest days, a stark contrast to the earlier months. Following the gradual increase from 10 hours in January and February to a peak of 14 hours during the summer months of June through July, daylight begins to wane as autumn transitions into winter. The gradual descent in available light is particularly pronounced from October, when the days measure 11 hours, down to December's 9 hours, signaling the onset of winter's embrace. This cyclical rhythm of daylight illuminates the changing seasons, drawing a beautiful connection between time and nature in this serene locale.
December in Tsushima, Japan, brings a gentle average wind speed of 2.5 m/s (6 mph), marking a slight uptick from the calmer breezes of July and September, which see the lowest figures of 1.6 m/s (4 mph) and 1.7 m/s (4 mph) respectively. As the year progresses toward winter, the wind tends to pick up slightly, with December's conditions echoing the early spring months of March and April, both at 3.0 m/s (7 mph). This pattern reveals a tendency for the winds to be more dynamic during the transitional seasons, while summer months experience a noticeable lull. Overall, December offers a mild yet invigorating wind, perfect for enjoying the beautiful winter landscapes of Tsushima.
Weather in Tsushima varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Tsushima, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January exhibit similar chilly conditions, with both months experiencing minimum temperatures around -5°C (24°F). However, December tends to be warmer on average, with an average temperature of 7°C (45°F) compared to January's cooler average of 5°C (41°F). Precipitation is slightly higher in December at 68 mm (2.7 in) over 7 days, while January sees a reduction to 52 mm (2.0 in), maintaining precipitation over the same number of days. Humidity levels are comparable, with December at 83% and January slightly lower at 82%. For detailed weather information for January, visit Tsushima weather in January.
December and February exhibit some similarities in weather patterns yet also display notable differences. Both months feature a minimum temperature of -5°C (24°F), but December enjoys a slightly warmer average temperature of 7°C (45°F) compared to February's average of 6°C (42°F). In terms of maximum temperatures, February edges out December with highs reaching 22°C (71°F), while December peaks at 20°C (68°F). Precipitation is also slightly lower in February, totaling 59 mm (2.3 in) over 6 days, compared to December's 68 mm (2.7 in) over 7 days. Humidity levels are a bit more favorable in February at 79%, compared to December's higher 83%. For more details on February weather, you can visit Tsushima weather in February.
When comparing the weather in December and March, there are notable differences in temperature and precipitation. December experiences cooler temperatures, with a minimum of -5°C (24°F) and a maximum of 20°C (68°F), averaging around 7°C (45°F). The month sees about 68 mm (2.7 in) of precipitation over 7 days, coupled with high humidity at 83%. In contrast, March brings milder conditions, featuring a minimum of -1°C (30°F) and a maximum of 25°C (77°F), with an average temperature of 10°C (50°F). However, March is also wetter, with 151 mm (6.0 in) of precipitation measured over 11 days and lower humidity at 74%. For a more in-depth look at March weather in Tsushima, you can refer to Tsushima weather in March.
In December, temperatures in Tsushima range from a chilly minimum of -5°C (24°F) to a mild maximum of 20°C (68°F), with an average of 7°C (45°F). The month experiences around 68 mm (2.7 in) of precipitation over approximately 7 days, accompanied by high humidity levels at 83%. In contrast, April sees a notable warm-up, with temperatures varying from a minimum of -1°C (31°F) to a maximum of 29°C (84°F) and an average of 14°C (58°F). However, it also brings increased rainfall, totaling 163 mm (6.4 in) over about 10 days, with humidity slightly lower at 76%. This shift in weather not only highlights the transition from winter to spring but also emphasizes the increasing variability and warmth as the seasons change. For a detailed look at what to expect, check out Tsushima weather in April.
December and May present strikingly different weather conditions. In December, temperatures range from a chilly -5°C (24°F) at night to a mild average of 7°C (45°F) during the day, with highs reaching up to 20°C (68°F). The month experiences about 68 mm (2.7 in) of precipitation over 7 days, alongside a consistent humidity level of 83%. In contrast, May welcomes warmer temperatures, with nighttime lows of 5°C (42°F) and daytime averages climbing to 19°C (67°F), peaking at a hot 32°C (90°F). This spring month sees significantly more rainfall, totaling 196 mm (7.7 in) over 11 days, while maintaining the same high humidity of 83%. For more information, you can check the Tsushima weather in May.
The weather in December and June is strikingly different, reflecting the distinct characteristics of each season. In December, temperatures range from a chilly -5°C (24°F) at night to a mild 20°C (68°F) during the day, with an average of 7°C (45°F). The month sees a total precipitation of 68 mm (2.7 in) over about 7 days, coupled with high humidity at 83%. In contrast, June features a much warmer climate, with nighttime lows of 12°C (54°F) and daytime highs reaching up to 33°C (91°F), averaging at 23°C (74°F). Precipitation significantly increases to 196 mm (7.7 in) spread across 14 days, and humidity slightly rises to 87%. For more detailed information on June weather, you can check Tsushima weather in June.
In December, temperatures are quite mild for the winter, ranging from a minimum of -5°C (24°F) to a maximum of 20°C (68°F), with an average of 7°C (45°F). The month receives a moderate amount of precipitation at 68 mm (2.7 in) over about 7 days, while humidity levels are relatively high at 83%. In stark contrast, July is characterized by much warmer weather, with temperatures varying from a minimum of 20°C (67°F) to a scorching maximum of 38°C (101°F), averaging around 27°C (81°F). This summer month is significantly wetter, featuring 384 mm (15.1 in) of rain across 23 days and an even higher humidity level of 93%. For more specifics on weather patterns during this vibrant month, refer to Tsushima weather in July.
December and August present contrasting weather patterns. In December, temperatures range from a chilly -5°C (24°F) at night to a milder 20°C (68°F) during the day, with an average of 7°C (45°F). The month sees about 68 mm (2.7 in) of precipitation over 7 days, accompanied by relatively high humidity at 83%. In stark contrast, August boasts much warmer conditions, with nighttime lows of 19°C (67°F) and daytime highs reaching up to 38°C (100°F), averaging around 29°C (84°F). Precipitation in August is significantly higher at 253 mm (10.0 in), occurring over 16 days, and humidity levels remain elevated at 91%. For more detailed information, you can check out Tsushima weather in August.
In December, temperatures are notably cooler, with a minimum of -5°C (24°F) and an average of 7°C (45°F), in stark contrast to September's warmer climate, which sees a minimum of 12°C (54°F) and an average of 25°C (76°F). December experiences significantly less rainfall, with 68 mm (2.7 in) of precipitation over just 7 days, compared to September's much rainier conditions, which can bring about 225 mm (8.9 in) over 16 days. Additionally, while humidity remains high in both months, it is slightly lower in December at 83% versus September's 87%. For more specific climate details during this month, you can explore Tsushima weather in September.
December and October present distinctly different weather patterns. In December, temperatures range from a chilly minimum of -5°C (24°F) to a mild maximum of 20°C (68°F), with an average around 7°C (45°F). The month sees about 68 mm (2.7 in) of precipitation over approximately 7 days, along with a humidity level of 83%. In contrast, October is noticeably warmer, with temperatures ranging from a minimum of 7°C (44°F) to a sweltering maximum of 32°C (90°F) and an average of 19°C (66°F). However, it also brings significantly more rainfall, with 246 mm (9.7 in) over 14 days and a humidity level of 85%. For more details on October weather patterns, you can refer to Tsushima weather in October.
In December, the weather tends to be cooler than in November, with average temperatures ranging from a minimum of -5°C (24°F) to a maximum of 20°C (68°F), compared to November's milder temperatures that range from 1°C (33°F) to 24°C (76°F). Although December experiences slightly more precipitation at 68 mm (2.7 in) over 7 days, November's 61 mm (2.4 in) over 5 days indicates it is also a relatively wet month. Humidity levels remain consistent in both months at 83%, making the overall feeling quite damp. For more details on November's climate, check out Tsushima weather in November.
As December descends upon Tsushima, the weather undergoes a notable transformation, marking a shift from the milder conditions of the autumn months. The average temperature dips significantly, creating a chill in the air, while occasional precipitation brings a refreshing contrast to the landscape. With humidity levels reaching 83%, the atmosphere feels particularly crisp, signifying the onset of winter's embrace. This month stands apart, offering a unique blend of cool temperatures and moderate rainfall that enhances the island's serene beauty. For a deeper dive into the climate nuances, explore more at Tsushima Climate.