Last updated: August 21, 2025
In January, Rishiri Town, Japan, experiences a chilly climate marked by an average temperature of -3°C (27°F), with daily highs reaching a crisp 5°C (40°F) and lows dipping to -12°C (10°F). This month sees considerable precipitation, totaling 108 mm (4.3 in), spread across 21 days, contributing to the town's high humidity levels of 87%. The persistent dampness and cold create a serene, wintry landscape, making it an intriguing destination for those who appreciate the beauty of Japan's northern winters.
In January, Rishiri Town, Japan experiences quite a chill, with temperatures ranging from a frigid -12°C (10°F) at night to a modest 5°C (40°F) during the day. The overall average hovers around -3°C (27°F), inviting a crisp winter atmosphere ideal for snow activities. As winter progresses into February, the temperatures dip slightly lower, with nighttime lows reaching -14°C (7°F), yet the average and maximum temperatures remain consistent at -3°C (27°F) and 5°C (41°F), respectively. This trend of cool, stable temperatures continues through March, where the onset of spring gradually nudges the averages above zero, but a lingering winter chill persists, particularly at night. As the months roll on, Rishiri warms up steadily, highlighting a clear seasonal transition, with April marking the arrival of mild weather and May ushering in pleasant temperatures that can reach up to 17°C (62°F), showcasing the town's charming shift from a winter wonderland to a budding spring landscape.
In January, Rishiri Town experiences a notable precipitation of 108 mm (4.3 in) over approximately 21 days, setting the tone for the winter season. This wet start is slightly more than the following month, February, which sees 103 mm (4.1 in) of rain, but fewer days of precipitation, suggesting a slightly drier feel in mid-winter. As the months progress into spring, the precipitation gradually decreases, with March witnessing a drop to 75 mm (2.9 in) over just 14 days. The trend continues with April and May, where rainfall further declines, and drier weather begins to take hold. Interestingly, November and December see a significant uptick in rainfall again, illustrating the seasonal variability characteristic of Rishiri's climate. Overall, January serves as a pivotal month, marking the peak of winter's wetness before the gradual shift toward a milder, drier spring.
In Rishiri Town, Japan, January sets the stage with a humidity level of 87%, marking the beginning of a trend that sees the town's moisture levels consistently high throughout the winter months. As the year progresses, humidity gradually declines but remains notably elevated in February and March, at 84% and 83% respectively. Spring brings only a slight increase back to 84% in April, while May and June see a peak of 88%, suggesting a transitional phase into the humid summer. The real humidity crescendo hits during the summer months, with figures soaring to 93% in July and an impressive 94% in August, making this period remarkably sticky. Following the sweltering summer, the humidity drops to 86% in September and continues to decline through the fall, hitting its lowest in November at 77% before climbing back to 83% in December. This annual cycle of humidity not only shapes Rishiri's climate but also enhances its rich natural beauty.
In January, Rishiri Town experiences a low UV Index of 2, meaning the risk of harm from unprotected sun exposure is minimal, with a burn time of about 45 minutes. As the year progresses to February and March, the UV Index rises to 3 and 5 respectively, marking a shift to a moderate exposure category where burn times decrease to 30 minutes. By April, UV levels climb further to 6, indicating a high exposure risk, and by May and into the summer months, Rishiri Town faces a very high UV Index that peaks at 9, drastically reducing safe sun exposure time to only 15 minutes. This trend continues through the summer, highlighting the importance of sun protection as we transition into fall, with the UV Index tapering back to 5 in October and 3 in November, before dropping to a low level of 1 in December. For more detailed insights, check out the full report on the Rishiri Town UV Index.
UV Risk Categories
In Rishiri Town, Japan, January sets the stage for a subtle transformation, offering a modest 116 hours of sunshine that gradually paves the way for the brightness of the following months. As winter gives way to spring, sunshine hours steadily increase, peaking in May with an impressive 305 hours of radiant days. The trend continues into the summer, where July basks in an abundance of light, totaling 325 hours, making it the sunniest month of the year. However, as autumn approaches, daylight hours begin to wane, descending to 163 hours by December, while November already shows a noticeable decline with 181 hours. This rhythm of sunlight not only marks the seasons but also invites visitors to experience Rishiri’s vibrant landscapes throughout the year, showcasing its charm under both the sun and the snow.
In Rishiri Town, Japan, January presents a somewhat gloomy prospect for sun-seekers, with only a 14% chance of sunny weather. This low likelihood marks the month's stark contrast to the sunnier days that follow—by March, the probability of sunshine substantially rises to 34%. As spring approaches, April brings an even brighter outlook at 43%, setting the stage for the warmer months. The trend continues with May and the peak summer months, where sunshine optimism reaches its pinnacle, hovering around 46% from June to September. Overall, while January might not be the ideal time for a sun-filled getaway, the gradual transition into spring heralds a promising shift toward brighter skies.
In Rishiri Town, Japan, the journey through January marks the beginning of the gradual lengthening of daylight, with the sun gracing the landscape for about 9 hours. As February arrives, the days gain an extra hour of light, indicating the slow return of longer days as winter wanes. This upward trend continues robustly into March, where daylight extends to 11 hours, hinting at the vibrant activities that spring will soon usher in. By April, the daylight reaches 13 hours, and this pattern of increasing brightness persists into the summer months, peaking at 15 hours in both June and July. As August rolls in, daylight begins to recede, but still offers 14 hours of sun. The transition to autumn sees a gradual decrease, with days shrinking to 12 hours in September and continuing down to 9 hours by November. Ultimately, December signals a return to shorter days with only 8 hours of daylight, rounding out the year with the echoed reminder of nature's cyclical rhythm.
In Rishiri Town, Japan, January greets visitors with robust winds, boasting an average speed of 8.9 m/s (20 mph), a figure that remains consistent through February. As winter deepens, the winds begin to decrease slightly, tapering off to 7.6 m/s (17 mph) in March before reaching their calmest point in July at just 4.7 m/s (10 mph). However, as the seasons shift, a gradual uptick in wind speeds ensues, culminating in a notable 9.3 m/s (21 mph) in December. This pattern reveals a clear trend of seasonal variation, with invigorating breezes characterizing the colder months and gentle winds accompanying the warmer summer, showcasing Rishiri’s dynamic weather throughout the year.
Weather in Rishiri Town varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Rishiri Town, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, the weather features a minimum temperature of -12°C (10°F) and an average of -3°C (27°F), while February experiences slightly colder conditions with a minimum of -14°C (7°F), although both months have a similar average temperature of -3°C (27°F) and a maximum of 5°C (40-41°F). Precipitation levels are fairly consistent, with January receiving 108 mm (4.3 in) over 21 days and February seeing slightly less at 103 mm (4.1 in) across the same number of days. Humidity is marginally lower in February at 84%, compared to January's 87%. For more detailed information, you can check Rishiri Town weather in February.
January and March exhibit notable differences in weather conditions. In January, temperatures are quite chilling, with a minimum of -12°C (10°F) and an average of -3°C (27°F), reaching a maximum of 5°C (40°F). The month is characterized by significant precipitation, totaling 108 mm (4.3 in) over 21 days, along with high humidity at 87%. In contrast, March marks a gradual warming, with minimum temperatures around -7°C (20°F) and an average of 1°C (34°F), peaking at 8°C (46°F). Precipitation decreases to 75 mm (2.9 in) over 14 days and humidity also slightly lowers to 83%. For more details, you can check the weather specifics here: Rishiri Town weather in March.
January weather in Rishiri Town is characterized by frigid temperatures, with minimums dropping to -12°C (10°F) and an average of -3°C (27°F). This month sees considerable precipitation, totaling 108 mm (4.3 in), spread across 21 days, and the humidity remains high at 87%. In contrast, April brings a notable increase in temperatures, with minimums hovering around -2°C (29°F) and an average of 5°C (41°F), peaking at 11°C (52°F). The precipitation also decreases significantly to 50 mm (2.0 in) over just 9 days, and humidity drops slightly to 84%. Overall, April marks a transition from the harsh winter conditions of January to a milder spring climate. For more detailed information on April weather, visit Rishiri Town weather in April.
January and May present stark contrasts in weather conditions. In January, temperatures drop significantly, with a minimum of -12°C (10°F) and an average around -3°C (27°F), reaching a maximum of just 5°C (40°F). The month is also characterized by high humidity at 87%, accompanied by considerable precipitation of 108 mm (4.3 in) over 21 days. In contrast, May sees a much milder climate, with minimum temperatures rising to 2°C (36°F) and an average of 9°C (48°F), peaking at 17°C (62°F). Precipitation decreases to 78 mm (3.1 in), falling over only 11 days, while humidity remains similar at 88%. These differences illustrate the transition from winter's chill to spring's warmth. For more information, visit Rishiri Town weather in May.
In January, the weather is significantly colder, with temperatures ranging from a chilly -12°C (10°F) to a max of 5°C (40°F), and an average of -3°C (27°F). The month is marked by high precipitation, totaling 108 mm (4.3 in) over 21 days, contributing to a high humidity level of 87%. In contrast, June offers a much milder climate, with temperatures fluctuating between 6°C (43°F) and 17°C (63°F), averaging around 13°C (55°F). Precipitation in June is lower at 88 mm (3.5 in), occurring over just 10 days, with humidity slightly rising to 88%. For more detailed insights into June weather, you can refer to Rishiri Town weather in June.
January in Rishiri Town is characterized by cold temperatures, with a minimum of -12°C (10°F) and an average of -3°C (27°F), peaking at a maximum of 5°C (40°F). The month sees considerable precipitation, totaling 108 mm (4.3 in) over 21 days, along with high humidity levels at 87%.
In stark contrast, July brings a much milder climate, with temperatures ranging from a minimum of 10°C (51°F) to an average of 18°C (64°F), and reaching up to 26°C (78°F). The precipitation remains similar at 104 mm (4.1 in), but is spread out over just 8 days, resulting in lower humidity levels of 93%.
For more details on the summer weather, check out Rishiri Town weather in July.
The weather in January contrasts sharply with that of August. While January experiences chilly temperatures, ranging from a minimum of -12°C (10°F) to a maximum of 5°C (40°F), August offers a much warmer climate with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 26°C (79°F). Additionally, January is characterized by significant precipitation, occurring on 21 days and totaling 108 mm (4.3 in), whereas August sees slightly more precipitation at 148 mm (5.8 in) but over only 13 days. Humidity levels also reflect the difference in seasons, with January at 87% and August climbing to 94%. For more detailed insights into the summer weather, you can check Rishiri Town weather in August.
In January, the weather is notably cold, with temperatures ranging from a chilling -12°C (10°F) at its minimum to a maximum of 5°C (40°F), averaging around -3°C (27°F). The month sees significant precipitation of 108 mm (4.3 in) spread over 21 days, and humidity levels are high at 87%. In contrast, September brings a much milder climate, with minimum temperatures around 12°C (53°F) and a comfortable average of 18°C (65°F), peaking at 25°C (77°F). Precipitation in September is lower at 92 mm (3.6 in) for just 10 days, and humidity remains similar at 86%. For more details about the weather in September, you can visit Rishiri Town weather in September.
In comparing the weather between January and October, a significant contrast emerges. January experiences frigid temperatures, with a minimum of -12°C (10°F) and an average of -3°C (27°F), while October enjoys milder conditions, with temperatures ranging from a minimum of 5°C (42°F) to a comfortable average of 13°C (56°F). Precipitation levels are also notable; January sees 108 mm (4.3 in) spread over 21 days, whereas October has slightly higher precipitation at 136 mm (5.4 in) over a shorter span of 16 days. Additionally, October's humidity of 79% is lower than January's 87%, contributing to a more pleasant overall climate. For more detailed insights on October weather, you can refer to Rishiri Town weather in October.
January and November showcase stark contrasts in weather conditions. January experiences chilling temperatures, with an average of -3°C (27°F) and a maximum of only 5°C (40°F), often accompanied by high humidity levels at 87%. This month sees considerable precipitation, totaling 108 mm (4.3 in) across 21 days, leading to a typically wintry atmosphere. In contrast, November boasts a milder climate, with average temperatures around 6°C (42°F) and highs reaching 15°C (59°F). Although it receives more precipitation at 172 mm (6.8 in) over 22 days, the lower humidity of 77% contributes to a more comfortable feel. For a closer look at November conditions, visit Rishiri Town weather in November.
In comparing the weather between January and December, January tends to be colder, with average temperatures dipping to -3°C (27°F) compared to December's average of -1°C (31°F). While January experiences a minimum temperature of -12°C (10°F), December's lowest temperature is slightly milder at -9°C (16°F). Precipitation levels are higher in December, totaling 167 mm (6.6 in) over 27 days, compared to January's 108 mm (4.3 in) spread across 21 days. Humidity remains relatively high in both months, but January is slightly more humid at 87% compared to December's 83%. For more detailed insights on December weather specifically, visit Rishiri Town weather in December.
January in Rishiri Town presents a distinct contrast to the milder months of the year, characterized by its chilly temperatures and significant precipitation. With average lows plunging well below freezing, this month is a time for cozy indoor activities, while the frequent rain and snowfall contribute to the town's winter charm. The high humidity adds to the crispness of the air, making it feel colder than it is. If you're curious about how January stacks up against other months, explore more at Rishiri Town Climate.