Last updated: August 21, 2025
In December, Tsushima, Japan experiences a range of temperatures, with a maximum of 20°C (69°F) and a comfortable average of 10°C (50°F), dipping to a chilly minimum of 0°C (33°F). This month sees 60 mm (2.4 in) of precipitation over about 7 days, contributing to a humidity level of 73%. Visitors can expect a mild winter atmosphere, ideal for enjoying the island's natural beauty while preparing for occasional rain.
As December settles in Tsushima, Japan, temperatures begin to shift significantly, marking the transition from the milder autumn months. With minimums dipping to 0°C (33°F), the chill of winter becomes palpable, yet the average temperature hovers around a crisp 10°C (50°F), providing a refreshing backdrop for residents and visitors alike. Daytime highs can still reach a comfortable 20°C (69°F), reminiscent of early fall, allowing for pleasant outdoor activities even as the evenings grow colder. This month illustrates the island's unique climate: a blend of lingering warmth and the encroaching chill, embodying the essence of Tsushima's diverse seasonal charm.
In December, Tsushima experiences a significant transition as it moves into winter, marked by average precipitation of 60 mm (2.4 in) over 7 days of rainfall. This amount reflects a notable decline compared to the wetter months preceding it, particularly September, which recorded a peak of 296 mm (11.7 in) over 14 days. The trend of decreasing precipitation is further highlighted by November's relatively dry conditions with only 44 mm (1.7 in). As the year draws to a close, December’s consistent yet moderate rainfall sets the stage for the drier winter months ahead, emphasizing the island's distinct seasonal shifts in weather patterns.
In Tsushima, Japan, December sees a moderate humidity level of 73%, which is slightly lower than the preceding months. As the year transitions from autumn to winter, humidity begins to taper off after the peak levels of 95% in July and 93% in August. This gradual decline is evident in the overall trend, where the highest readings are concentrated during the summer months, reaching their peak in June and July. By December, as temperatures drop and the air becomes crisper, the humidity remains relatively comfortable, providing a pleasant environment for residents and visitors alike. The shift from the sweltering heat of summer to the milder conditions of winter is marked by this steady decrease, reflecting a rhythm that characterizes Tsushima's unique climate throughout the year.
In December, Tsushima, Japan sees a notable drop in the UV Index, registering at 3. This category falls under moderate exposure, allowing outdoor enthusiasts to enjoy their activities with a burn time of around 30 minutes before sun protection is needed. This trend of decreasing UV levels continues from the higher indices observed in the summer months, which peaked at 12 in July and August, indicating an intense need for sun safety during those periods. As winter sets in, sun exposure becomes more manageable, making December a more forgiving time for outdoor adventures. For more detailed information on UV Index trends throughout the year, visit Tsushima UV Index.
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In December, Tsushima, Japan, experiences a comforting 233 hours of sunshine, lending warmth to the chill of winter. As the year draws to a close, the daylight hours gradually decrease from the peak of 313 hours in August, illustrating a clear seasonal shift. A notable trend emerges as spring approaches: sunshine begins in January with just 193 hours, steadily increasing each month, culminating in the vibrant days of May. However, the descent into winter sees a slight dip, yet December’s sunshine remains substantial, offering a gentle conclusion to the year. This pattern of fluctuating light not only defines the seasons but also enriches the captivating beauty of Tsushima throughout the year.
In December, Tsushima, Japan, experiences a 50% chance of sunny weather, presenting a promising opportunity for those seeking to enjoy the island's scenic beauty. This likelihood reflects a stable trend as the year transitions from November's 53% and October's 54%, maintaining a solid balance of sunny days amidst the winter chill. After summer and early autumn, which saw significantly lower chances of sunshine, December emerges as a month where the skies clear up, suggesting that visitors may encounter more vibrant days as compared to earlier months like July and August, known for their cloudier disposition. As the year draws to a close, the modestly bright outlook in December invites both tourists and locals to embrace the mild winter days under the sun.
In Tsushima, Japan, the rhythm of daylight shifts throughout the year, creating a captivating seasonal dance. January and February kick off with a consistent 10 hours of daylight, providing a tranquil start to the year. As spring approaches, March sees a gentle rise to 11 hours, leading into the longer days of April and May, which bask in a warm 13 hours of sunlight. The peak brightness occurs in June and July, with both months offering an impressive 14 hours of daylight, perfect for summer adventures. However, as autumn unfolds, the sun begins its retreat; August features 13 hours, followed by a gradual decline to 12 hours in September, then down to 10 hours by November. Finally, December closes the year with the shortest daylight at just 9 hours, inviting quieter moments of reflection as the year winds down. This ebb and flow of daylight not only marks the passage of time but also enriches the experience of life on the island.
As December descends upon Tsushima, Japan, the cooling winds begin to pick up, averaging 7.8 m/s (18 mph)—a slight rise from the previous month. This marks a subtle return to stronger gusts, reminiscent of the robust winds experienced at the year's start, with January's winds clocking in at 8.4 m/s (19 mph). Notably, the month reflects a transition away from the calmer winds of summer and early autumn, where speeds dipped below 7 m/s. As the island prepares for winter, the invigorating December breezes serve as a reminder of the dynamic nature of Tsushima's climate. The steady flow of the wind creates a picturesque backdrop, blending the tranquil beauty of the landscape with the vibrant energy of the season.
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.
In December, temperatures in Tsushima range from a minimum of 0°C (33°F) to a maximum of 20°C (69°F), with an average temperature of 10°C (50°F). The month experiences around 60 mm (2.4 in) of precipitation over 7 days and maintains a humidity level of 73%. In contrast, January sees slightly cooler conditions, with temperatures dropping to a minimum of -2°C (28°F) and an average of 8°C (47°F), while the maximum reaches 19°C (66°F). Precipitation increases to 68 mm (2.7 in) over 8 days, and the humidity remains relatively stable at 72%. For more details, check out Tsushima weather in January.
In December, temperatures typically range from a minimum of 0°C (33°F) to a maximum of 20°C (69°F), with an average temperature of 10°C (50°F). The month experiences around 60 mm (2.4 in) of precipitation over approximately 7 days and maintains a humidity level of 73%. In contrast, February sees slightly cooler temperatures, with lows of -1°C (31°F) and highs reaching 17°C (62°F), averaging 8°C (47°F). Precipitation is similar, with 59 mm (2.3 in) expected over about 8 days, but humidity drops to 67%. For more detailed information, you can refer to Tsushima weather in February.
In December, temperatures range from a chilly 0°C (33°F) at night to a pleasant 20°C (69°F) during the day, with an average of 10°C (50°F). The month sees around 60 mm (2.4 in) of precipitation over 7 days, and humidity levels are relatively high at 73%. In contrast, March experiences slightly warmer conditions, with minimum temperatures increasing to 4°C (40°F) and average highs reaching 17°C (64°F). While the average temperature is a bit higher at 12°C (54°F), March has considerably more rainfall, totaling 127 mm (5.0 in) over 10 days, and humidity is lower at 65%. For additional details on the weather in March, check out Tsushima weather in March.
In December, the weather tends to be cooler, with average temperatures ranging from a minimum of 0°C (33°F) to a maximum of 20°C (69°F), and an average temperature of 10°C (50°F). The month sees a total precipitation of 60 mm (2.4 in) spread over about 7 days, with humidity levels at 73%. In contrast, April experiences milder temperatures, with a minimum of 7°C (45°F) and an average of 15°C (58°F), while still reaching a maximum of 20°C (69°F). However, April also brings increased rainfall, totaling 122 mm (4.8 in) over approximately 8 days, and a slightly higher humidity at 75%. For a detailed look at Tsushima’s weather in April, you can check this link: Tsushima weather in April.
In December, temperatures are cooler, ranging from a minimum of 0°C (33°F) to a maximum of 20°C (69°F), with an average of 10°C (50°F). The month sees about 60 mm (2.4 in) of precipitation over 7 days and a humidity level of 73%. In contrast, May brings milder temperatures with a minimum of 12°C (53°F) and a maximum of 22°C (72°F), averaging around 18°C (65°F). This month experiences higher precipitation, totaling 116 mm (4.6 in) over 8 days, along with an increase in humidity to 83%. For more details on May's weather, you can visit Tsushima weather in May.
December and June present strikingly different weather patterns. In December, temperatures range from a chilly minimum of 0°C (33°F) to a comfortable maximum of 20°C (69°F), with an average of 10°C (50°F). The month sees about 60 mm (2.4 in) of precipitation over 7 days and humidity levels hover around 73%. In contrast, June offers much warmer conditions, with temperatures varying from a minimum of 17°C (64°F) to a maximum of 25°C (77°F) and an average of 21°C (70°F). This month experiences significantly higher rainfall, totaling 159 mm (6.3 in) over 9 days, accompanied by elevated humidity at 87%. These differences highlight a transition from the cooler, drier climate of December to the warm, wetter conditions typical of June. For more details, visit Tsushima weather in June.
December and July present contrasting weather patterns. December features cooler temperatures, with a minimum of 0°C (33°F) and an average of 10°C (50°F), while July boasts much warmer conditions, with a minimum of 21°C (69°F) and an average of 25°C (77°F). Precipitation also varies significantly between the two months; December sees about 60 mm (2.4 in) across 7 days, whereas July experiences a substantial 273 mm (10.8 in) over 14 days, accompanied by notably higher humidity at 95%. For a closer look at July's weather specifics, you can refer to Tsushima weather in July.
December and August present contrasting weather conditions. December features cooler temperatures, with averages around 10°C (50°F) and a maximum of 20°C (69°F), while August boasts warmth, with averages of 27°C (81°F) and highs reaching 31°C (87°F). In terms of precipitation, December receives 60 mm (2.4 in) over 7 days, while August experiences significantly more rainfall at 171 mm (6.7 in) across 13 days, contributing to the higher humidity of 93% during the summer month. For more specifics on August weather, you can check this link: Tsushima weather in August.
In December, temperatures are notably cooler, with a minimum of 0°C (33°F) and an average of 10°C (50°F), while September enjoys much milder conditions, ranging from a minimum of 19°C (67°F) to an average of 24°C (76°F). Precipitation also differs significantly between the two months; December receives about 60 mm (2.4 in) over approximately 7 days, whereas September experiences a much wetter climate with 296 mm (11.7 in) over 14 days. Humidity levels are relatively high in both months, with December at 73% and September slightly higher at 80%. For a closer look at the changing conditions during September, refer to Tsushima weather in September.
In comparing the weather of December and October, significant differences emerge. December experiences cooler temperatures, with a minimum of 0°C (33°F) and an average of 10°C (50°F), while October is notably warmer, with temperatures ranging from a minimum of 12°C (55°F) to a maximum of 27°C (80°F). Additionally, October sees higher precipitation levels at 118 mm (4.7 in) over 9 days compared to December's 60 mm (2.4 in) over 7 days. Humidity levels are slightly higher in October at 77%, compared to December's 73%. For more detailed information about the weather in October, you can check out Tsushima weather in October.
December weather is generally cooler and wetter compared to November. While November boasts milder temperatures with an average of 16°C (60°F) and a maximum of 22°C (72°F), December sees a drop, averaging around 10°C (50°F) and peaking at 20°C (69°F). Precipitation also increases in December, reaching 60 mm (2.4 in) over 7 days, compared to November's 44 mm (1.7 in) over 8 days. Humidity levels remain relatively similar, with December at 73% and November slightly higher at 75%. For more detailed information on November weather conditions, you can check Tsushima weather in November.
As December unfolds in Tsushima, a distinct shift in weather patterns emerges, contrasting sharply with the milder months preceding it. With temperatures averaging around 10°C (50°F) and dipping to chilly lows, this month ushers in a crisp atmosphere that signals the advent of winter. Humidity remains relatively high, at 73%, which can make the cooler temperatures feel even more pronounced. Precipitation is also notable, with around 60 mm expected over the course of the month, as winter rains accompany the season's chill. These elements combine to create a unique backdrop for exploring Tsushima, where the landscape transforms into a serene winter wonderland. For more insights on the weather patterns, visit Tsushima Climate.