Last updated: August 21, 2025
In January, Tsushima, Japan, experiences a diverse climate, with temperatures ranging from a minimum of -5°C (23°F) to a pleasant maximum of 18°C (64°F). The average temperature sits around 5°C (41°F), creating a brisk winter atmosphere. With humidity levels reaching 82%, the air can feel quite chilly, especially during the cooler nights. January also sees approximately 52 mm (2.0 in) of precipitation, distributed over about 7 days, making it a relatively damp month. Whether you're exploring the island's natural beauty or experiencing local culture, January in Tsushima provides a unique backdrop steeped in winter charm.
In Tsushima, Japan, January showcases a notable chill, with temperatures ranging from a brisk -5°C (23°F) to a cozy 18°C (64°F). As the new year unfolds, the average temperature hovers around 5°C (41°F), presenting a perfect winter ambiance. This stark cold gradually gives way to milder conditions in February, where the average nudges up slightly to 6°C (42°F) and maximum temperatures can reach up to 22°C (71°F). However, as the season transitions toward spring, March and April see a significant warming trend, with average temperatures rising to 10°C (50°F) and 14°C (58°F), respectively, while maximums flirt with the 25°C (77°F) and 29°C (84°F) marks. This progression highlights Tsushima's seasonal shift, moving from the bite of winter towards the embracing warmth of spring, making January a month of crispness and the promise of change.
In January, Tsushima, Japan experiences a modest precipitation level of 52 mm (2.0 in), falling over just seven days throughout the month. This marks the beginning of a gradual increase in rainfall as winter gives way to spring. February sees a slight uptick to 59 mm (2.3 in), suggesting a trend toward wetter conditions, with precipitation days reduced to six. However, as spring approaches, the island witnesses a significant rise in rainfall during March and April, where totals soar to 151 mm (6.0 in) and 163 mm (6.4 in), respectively. Overall, January's weather hints at the wetter months ahead, serving as a prelude to the lush greenery that follows as the seasons progress.
In January 2023, Tsushima, Japan experiences a notable humidity level of 82%, setting the stage for a damp winter. The trend shows a gradual decrease in humidity as the year progresses into February (79%) and March (74%), providing a brief respite before the onset of spring. However, as temperatures begin to rise in April (76%) and May (83%), the humidity makes a comeback. This pattern continues into the hotter months, peaking in July at a steamy 93% and remaining high throughout August (91%). As autumn arrives, humidity starts to wane slightly, with September at 87% and gradually descending to 83% by December. Overall, January's humidity serves as a precursor to the fluctuating yet predominantly high humidity that characterizes Tsushima throughout the year.
In Tsushima, Japan, January brings a moderate UV Index of 4, which allows for a burn time of 30 minutes—a good reminder to enjoy the outdoors while being mindful of sun exposure. As the months progress, the UV Index escalates significantly, peaking at an extreme level of 11 during the summer months of May through August, where the burn time shrinks to just 10 minutes. This trend highlights a critical shift from moderate to very high and extreme categories, urging residents and visitors to take appropriate sun safety measures as they navigate the varying levels of UV radiation throughout the year. For a detailed look at these trends, you can check the Tsushima UV Index.
UV Risk Categories
In January, Tsushima, Japan, basks in 185 hours of sunshine, setting the stage for a gradual upward trend as the months unfold. This increase accelerates dramatically in February with 231 hours, and by March, sunshine peaks at 265 hours. April continues this trajectory, reaching 276 hours, while May sees a peak of 290 hours, offering the most delightful days before summer. As the year progresses into June and July, sunshine hours begin to taper slightly, with 270 and 256 hours, respectively. However, August revives the summer glow, boasting an impressive 300 hours. As autumn sets in, sunshine hours diminish, but remain steady through the fall, from 244 hours in September to 223 hours in December. This annual cycle illustrates how Tsushima transitions from the crispness of winter to the vibrant warmth of summer, leaving an inviting aura throughout the year.
In January, Tsushima, Japan, enjoys a 50% chance of sunny weather, which sets a balanced tone for the month. This likelihood remains steady as February mirrors January's sun potential. As spring approaches, March sees a slight dip to 43%, hinting at the transition into a more unpredictable weather pattern. The trend continues into April, with a slight recovery at 48%, but it declines further with the onset of summer, reaching just 23% by June. Interestingly, October and November exhibit a resurgence of sunnier days, with chances climbing to 56% and 59%, respectively. This pattern suggests that while January offers a fair share of sunshine, the months ahead become less reliable, only to see a return of brighter days as autumn settles in.
In January, Tsushima, Japan enjoys 10 hours of daylight, a trend that remains consistent through February, hinting at the winter season's lasting grip. As spring approaches in March, daylight begins to stretch to 11 hours, gradually welcoming longer days. By the time April arrives, daylight expands significantly to 13 hours, continuing its upward trajectory, reaching 14 hours in both May and June. This peak in daylight hours symbolizes the vibrancy of summer, before gently tapering off in August as daylight shrinks back to 13 hours. The decline continues through the fall, with September offering 12 hours and October, 11 hours, leading us into the shorter days of late autumn and winter. By December, Tsushima experiences just 9 hours of daylight, completing the cycle through the changing seasons and showcasing nature's rhythm.
In January, the winds of Tsushima, Japan create a gentle backdrop, with an average speed of 2.6 m/s (6 mph). As winter wanes into February, the breeze picks up slightly to 2.9 m/s, hinting at a more invigorating transition. March and April maintain this upward momentum, both registering at 3.0 m/s (7 mph), as the anticipation of spring fills the air. However, as May approaches, the winds begin a gentle retreat, dropping to 2.5 m/s. This pattern of fluctuation continues through the warmer months, with July experiencing the calmest days at just 1.6 m/s (4 mph). By autumn, the winds stabilize again, oscillating between 1.7 m/s and 2.5 m/s before returning to the familiar pace of January. This delightful dance of wind speeds reflects Tsushima's unique climate, where each month's breath brings a fresh perspective to its serene landscapes.
Weather in Tsushima varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Tsushima, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February both experience chilly temperatures, with January averaging around 5°C (41°F) and February slightly warmer at an average of 6°C (42°F). The minimum temperatures remain consistent, with both months dipping to -5°C (23°F for January and 24°F for February). In terms of maximum temperatures, February sees a higher peak at 22°C (71°F) compared to January's 18°C (64°F). Precipitation is slightly increased in February, totaling 59 mm (2.3 in) over 6 days, compared to January's 52 mm (2.0 in) over 7 days. Humidity is also marginally lower in February at 79%, down from January's 82%. For more detailed information on February weather, you can visit Tsushima weather in February.
In January, the weather is notably cold, with temperatures ranging from a minimum of -5°C (23°F) to an average of 5°C (41°F) and peaking at a maximum of 18°C (64°F). The month sees a moderate amount of precipitation, totaling 52 mm (2.0 in) over 7 days, accompanied by high humidity at 82%.
In contrast, March brings milder temperatures, with a minimum of -1°C (30°F) and an average of 10°C (50°F), reaching up to 25°C (77°F). However, March is significantly wetter, recording 151 mm (6.0 in) of precipitation spread over 11 days, while humidity decreases slightly to 74%. For more detailed information about the weather in Tsushima during March, you can check Tsushima weather in March.
In January, the weather is quite chilly, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 18°C (64°F) and an average temperature around 5°C (41°F). The month sees a moderate amount of precipitation, totaling 52 mm (2.0 in) over about 7 days, along with relatively high humidity at 82%.
In contrast, April brings much warmer temperatures, with minimums of -1°C (31°F) and maximums reaching 29°C (84°F), resulting in an average temperature of 14°C (58°F). However, April also experiences a significant increase in rainfall, with 163 mm (6.4 in) of precipitation occurring over approximately 10 days, while humidity decreases slightly to 76%. For more detailed information, you can check Tsushima weather in April.
In January, temperatures are considerably colder, ranging from a minimum of -5°C (23°F) to a maximum of 18°C (64°F), with an average of 5°C (41°F). The month sees an average of 52 mm (2.0 in) of precipitation over about 7 days, combined with a humidity level of 82%. In contrast, May brings a much warmer climate, with minimum temperatures starting at 5°C (42°F) and peaking at 32°C (90°F), resulting in a much higher average of 19°C (67°F). However, May also experiences increased precipitation, totaling 196 mm (7.7 in) over 11 days, maintaining a similar humidity level of 83%. For a more detailed look at May's weather in Tsushima, you can check Tsushima weather in May.
In January, the weather is quite chilly, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 18°C (64°F) and an average of 5°C (41°F). The month sees moderate precipitation, totaling 52 mm (2.0 in) over about 7 days, and the humidity remains relatively high at 82%. In contrast, June brings much warmer conditions, with temperatures rising significantly to a minimum of 12°C (54°F), an average of 23°C (74°F), and a maximum reaching 33°C (91°F). However, June also experiences increased precipitation, amounting to 196 mm (7.7 in) over about 14 days, with humidity slightly higher at 87%. For more detailed insights into June's climate, you can visit Tsushima weather in June.
In January, temperatures in Tsushima are quite cool, with a minimum of -5°C (23°F) and an average of 5°C (41°F), peaking at a maximum of 18°C (64°F). The month experiences moderate precipitation, totaling 52 mm (2.0 in) over about 7 days, alongside a relatively high humidity level of 82%.
In contrast, July brings significantly warmer weather, with temperatures ranging from a minimum of 20°C (67°F) to an average of 27°C (81°F), and highs reaching as much as 38°C (101°F). However, this month is also characterized by heavy rainfall, accumulating 384 mm (15.1 in) over 23 days, paired with even higher humidity at 93%. For a more detailed look at Tsushima's July weather, visit Tsushima weather in July.
January and August present stark contrasts in weather conditions. In January, temperatures range from a chilly -5°C (23°F) at night to a mild 18°C (64°F) during the day, with an average of 5°C (41°F). The month sees approximately 52 mm (2.0 in) of precipitation over 7 days, accompanied by a relatively high humidity level of 82%. In sharp contrast, August ushers in significantly warmer temperatures, with nighttime lows of 19°C (67°F) and daytime highs that can reach up to 38°C (100°F), averaging around 29°C (84°F). This month is much wetter, featuring 253 mm (10.0 in) of rainfall spread across 16 days, and even higher humidity at 91%. For a deeper look into August weather specifically in Tsushima, you can visit Tsushima weather in August.
January and September showcase contrasting weather conditions. In January, temperatures range from a chilly -5°C (23°F) at night to a mild 18°C (64°F) during the day, accompanied by an average temperature of 5°C (41°F). The month experiences 52 mm (2.0 in) of precipitation over approximately 7 days, and the humidity sits at 82%. In stark contrast, September features much warmer temperatures, with nighttime lows of 12°C (54°F) and daytime highs soaring to 37°C (98°F), culminating in an average temperature of 25°C (76°F). This month sees significantly more rainfall, totaling 225 mm (8.9 in) over 16 days, with humidity increasing slightly to 87%. For a deeper look at September's climate specifics, you can check Tsushima weather in September.
January and October present stark contrasts in weather conditions. In January, temperatures are quite chilly, with a minimum of -5°C (23°F) and an average of 5°C (41°F), peaking at 18°C (64°F). Precipitation is moderate at 52 mm (2.0 in), occurring over 7 days, coupled with high humidity at 82%. Conversely, October enjoys significantly warmer temperatures with a minimum of 7°C (44°F) and an average of 19°C (66°F), soaring to a maximum of 32°C (90°F). However, October is also much wetter, receiving 246 mm (9.7 in) of rainfall across 14 days, and the humidity reaches 85%. For a detailed look at October weather patterns, check out Tsushima weather in October.
January and November present quite contrasting weather patterns. In January, temperatures range from a chilly -5°C (23°F) to a modest high of 18°C (64°F), with an average of 5°C (41°F). The month experiences about 52 mm (2.0 in) of precipitation over 7 days, alongside a high humidity level of 82%. In comparison, November offers milder conditions, with temperatures ranging from a minimum of 1°C (33°F) to a comfortable maximum of 24°C (76°F) and an average of 13°C (55°F). Precipitation increases slightly to 61 mm (2.4 in) over only 5 days, while humidity remains similar at 83%. For a more detailed look at November's weather, visit Tsushima weather in November.
In January, temperatures range from a minimum of -5°C (23°F) to a maximum of 18°C (64°F), with an average temperature of 5°C (41°F). This month experiences an average precipitation of 52 mm (2.0 in) over about 7 days, coupled with a humidity level of 82%. In contrast, December sees slightly milder temperatures with a minimum of -5°C (24°F) and a maximum of 20°C (68°F), resulting in an average of 7°C (45°F). December also has higher precipitation at 68 mm (2.7 in) over the same number of rainy days and a slightly higher humidity level of 83%. For a detailed look at December weather specifics, you can check out Tsushima weather in December.
As January unfolds in Tsushima, it brings a noticeable chill, with temperatures dipping lower than the rest of the year, providing a stark contrast to the milder seasons. The average temperature hovers around a brisk 5°C, while frosty nights can see lows plummet to -5°C. Despite the chilly weather, January is characterized by relatively low precipitation days, with around 52 mm of rainfall over the month. The humidity remains high, often reaching 82%, adding to the crisp winter air. Unlike the lush, wet months of spring and summer, January sets a serene, quiet scene perfect for those who appreciate the beauty of winter. For more insights into Tsushima's weather patterns throughout the year, visit Tsushima Climate.