Last updated: August 21, 2025
January in Muroran, Japan, presents a chilly yet captivating winter experience. With a maximum temperature reaching 8°C (47°F) and an average low dipping to -9°C (16°F), the month embraces a cold climate that often brings frosty mornings. The steady precipitation of 66 mm (2.6 in) over 13 days adds a touch of winter beauty, while humidity levels hover around a crisp 84%, enhancing the cool atmosphere. Whether you're exploring the picturesque landscape or cozying up indoors, January's weather in Muroran offers a unique charm that reflects the season's essence.
In January, Muroran, Japan, experiences a crisp winter chill, characterized by minimum temperatures plummeting to -9°C (16°F) and averaging around -1°C (30°F). While the days bring slightly milder conditions with a maximum of 8°C (47°F), the overall atmosphere remains cold and invigorating. This month serves as a transition point as it concludes January's icy grip, nudging gently toward the slightly warmer February, where temperatures dip further at times. Observing this trend, it's evident that Muroran's winter, while harsh, is balanced by a steady approach towards the spring thaw, hinting at the gradual transition of seasons from frigid to mild.
In January, Muroran experiences an average precipitation of 66 mm (2.6 in) over the course of 13 days. This marks a slight decline compared to February's 59 mm, despite both months sharing the same number of rainy days. As winter transitions to spring, March brings an increase, with 81 mm (3.2 in) of rain on 9 days. The trend continues upward into the warmer months, peaking in August at a significant 194 mm (7.7 in) and stretching over 15 days. This progressive rise in precipitation not only highlights the region's shift towards wetter conditions but also illustrates the vibrant climate patterns that characterize each season in Muroran.
In Muroran, Japan, January ushers in a month characterized by a high humidity level of 84%, setting the stage for a winter that is both crisp and damp. As the calendar turns to February, humidity slightly dips to 83%, showcasing a subtle yet noticeable decline. This trend continues into March and April, where levels stabilize at 81%, hinting at a gradual easing of the winter chill. However, as spring merges into summer, humidity levels take a dramatic turn, peaking in July at a steamy 93% and reaching their highest point in August at 95%. Following this summer surge, a decline begins as September sees 88% humidity, leading to a more comfortable autumn season. By November and December, humidity levels drop further to 79% and 80%, respectively, reflecting the transition to the drier winter months again. Overall, the data highlights a marked fluctuation in humidity throughout the year, with a distinct summer spike that contrasts with the relative dryness of late fall and early winter.
In January, Muroran, Japan experiences a UV Index of 2, classified as low, with a burn time of 45 minutes—perfect for enjoying the winter sun with minimal risk. As the year progresses into February and March, the UV Index rises to 3 and 5, respectively, indicating a moderate exposure level that necessitates a bit more caution with an approximate burn time of 30 minutes. With the arrival of April, the UV Index escalates to 7, entering the high category, and at this point, sun protection becomes increasingly important as the burn time shortens to 25 minutes. The peak summer months from May to August reveal a striking trend, with the UV Index soaring to 9 and 10—labeled as very high—where the burn time significantly reduces to just 15 minutes. As autumn arrives, the index gradually decreases; by October, it falls to 6 before returning to its initial low in December at 2. This seasonal fluctuation underscores the importance of staying vigilant about sun exposure throughout the year. For more insights on UV levels, check out Muroran UV Index.
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In January, the city of Muroran, Japan, basks in 142 hours of sunshine, setting the stage for the gradual shift towards brighter days. As winter gives way to spring, the sunshine hours steadily increase, peaking in May with an impressive 300 hours of radiant light, inviting residents and visitors alike to embrace the outdoors. This sunny trend continues through the summer months, maintaining a robust average of around 299 hours in July, before tapering off in September. With the arrival of autumn, sunshine hours decline, but the city still enjoys a noteworthy 183 hours in November, showcasing Muroran's persistent charm under the sky. This gradual transition from winter's subtle glow to the vibrant light of spring paints a picturesque cycle, making each month uniquely captivating.
In Muroran, Japan, January sees a 32% chance of sunny weather, marking it as a time when clouds often prevail. This figure reflects a gradual increase in sunshine likelihood as the months progress, with February slightly improving to 34% and March further rising to 37%. The trend continues upward into April, where the chances soar to 45%, suggesting that winter's grip is loosening as spring approaches. Interestingly, while May dips back to 31%, the months that follow generally exhibit a healthy share of sunny days, particularly in the summer months, where the chances drop to around 28% in July and 24% in August. Overall, if you’re hoping for a bit of sun in January, it’s best to prepare for a mix of weather, with brighter days on the horizon as the season transitions.
In Muroran, Japan, January marks a time when daylight lingers for approximately 9 hours, setting the stage for a gradual increase as the year unfolds. As February arrives, daylight extends to 10 hours, signaling a welcomed shift toward longer days. This upward trend continues through March and April, where daylight stretches to 11 and 13 hours respectively, offering a taste of spring's approach. The momentum peaks in June with a radiant 15 hours of daylight, providing abundant sunshine during the vibrant summer months. However, as July and August roll in, there's a slight decline to 14 and 13 hours, a gentle reminder of the transition toward autumn. By September, daylight begins to recede to 12 hours, and as the year draws to a close, both October and November return to 11 and 9 hours respectively, encapsulating the cyclical nature of the seasons. Throughout this journey, January's brief daylight serves as a poignant beginning to the evolving dance of light across the year in Muroran.
In Muroran, Japan, the January winds blow briskly with an average speed of 7.0 m/s (16 mph), setting the stage for winter's icy embrace. As the month progresses into February, the winds show a slight uptick, reaching 7.1 m/s, maintaining that invigorating chill. However, as the seasons shift toward spring, the wind's intensity softens significantly; by March and April, it drops to 4.8 m/s (11 mph), signaling the onset of milder weather. This trend continues through May and June, where the average wind speed further decreases, hinting at the calm of summer. Variability returns in the latter half of the year, with November and December bringing back stronger gusts, culminating at 6.7 m/s (15 mph), preparing the region for yet another cycle of winter. Overall, January serves as a precursor to a dynamic wind pattern, highlighting Muroran's unique climatic rhythm throughout the year.
Weather in Muroran varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Muroran, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February exhibit similar average temperatures, hovering around -1°C (30°F), but February generally experiences slightly colder extremes, with a minimum temperature of -10°C (14°F) compared to January's -9°C (16°F). Both months see consistent precipitation levels, with January receiving 66 mm (2.6 in) and February slightly lower at 59 mm (2.3 in), and both months have rain on approximately 13 days. Humidity remains fairly constant, with January at 84% and February just a notch lower at 83%. For those interested in specific conditions during February, you can find more information here: Muroran weather in February.
In January, temperatures in Muroran can drop to a chilly minimum of -9°C (16°F) and reach a maximum of 8°C (47°F), with an average temperature hovering around -1°C (30°F). The month typically sees about 66 mm (2.6 in) of precipitation spread over 13 days, coupled with a high humidity level of 84%. In contrast, March brings slightly milder weather, with temperatures ranging from -5°C (23°F) to a maximum of 10°C (50°F) and an average of 2°C (36°F). Precipitation increases to 81 mm (3.2 in), but falls over just 9 days, and humidity remains fairly consistent at 81%. For a more detailed look at the conditions, you can check Muroran weather in March.
In comparison to January, April heralds a notable transition in weather conditions. January typically experiences colder temperatures, with a minimum dropping to -9°C (16°F) and an average of -1°C (30°F), while April sees a milder range, starting from a minimum of 0°C (32°F) and averaging 6°C (42°F). Precipitation is slightly higher in April at 86 mm (3.4 in) over 11 days, compared to January's 66 mm (2.6 in) across 13 days. Despite the increase in rainfall, April's humidity is slightly lower at 81% than January's 84%, signaling the approach of spring. For a detailed look at Muroran's weather during this month, check out Muroran weather in April.
January and May in Muroran present stark contrasts in weather conditions. In January, temperatures range from a chilly -9°C (16°F) to a maximum of 8°C (47°F), with an average of -1°C (30°F), making it one of the coldest months of the year. January experiences 66 mm (2.6 in) of precipitation over 13 days, coupled with high humidity at 84%. In comparison, May brings a noticeable warmth, with temperatures ranging from a minimum of 5°C (41°F) to a pleasant maximum of 22°C (73°F), and an average of 10°C (50°F). Despite also experiencing some precipitation at 99 mm (3.9 in) over 10 days, the humidity remains relatively high at 86%. The transition from January's cold grasp to May's warming embrace showcases the diverse climate of the region: Muroran weather in May.
In January, the weather is quite cold, with temperatures ranging from a chilly -9°C (16°F) at night to a maximum of 8°C (47°F) during the day, while the average hovers around -1°C (30°F). The month experiences 66 mm (2.6 in) of precipitation over 13 days, contributing to a high humidity level of 84%. In contrast, June brings a significant warmth, with temperatures starting from a mild 9°C (48°F) and peaking at 20°C (69°F), averaging at 14°C (58°F). This month sees increased rainfall, totaling 126 mm (5.0 in) across 11 days, and a slightly higher humidity of 87%. For more detailed information on the June climate, you can visit Muroran weather in June.
In January, the weather is considerably colder, with temperatures ranging from a chilling -9°C (16°F) at night to a maximum of 8°C (47°F) during the day. This month experiences an average temperature of -1°C (30°F) and is marked by high humidity at 84%, alongside 66 mm (2.6 in) of precipitation spread over 13 days. In contrast, July brings a dramatic shift, with temperatures ranging from a mild 13°C (55°F) to a warm 26°C (79°F), averaging 19°C (66°F). Although July is slightly wetter with 128 mm (5.0 in) of precipitation over 14 days, the humidity rises to 93%, making the air feel quite muggy. For a detailed look at Muroran's July weather, you can check this link: Muroran weather in July.
January and August offer starkly contrasting weather conditions. In January, temperatures can dip as low as -9°C (16°F), with an average of -1°C (30°F) and a maximum of 8°C (47°F). The month is characterized by higher humidity at 84% and moderate precipitation, totaling 66 mm (2.6 in) over about 13 days. In sharp contrast, August boasts milder temperatures, ranging from a minimum of 16°C (61°F) to a maximum of 27°C (82°F), with an average of 21°C (70°F). However, it also sees increased rainfall, accumulating to 194 mm (7.7 in) across 15 days, and a higher humidity level of 95%. For more details, check out Muroran weather in August.
January and September present a stark contrast in weather conditions. In January, temperatures can plunge to a minimum of -9°C (16°F), with an average around -1°C (30°F) and a maximum reaching 8°C (47°F). The month typically experiences 66 mm (2.6 in) of precipitation over 13 days, coupled with a high humidity level of 84%. In contrast, September brings milder temperatures, with a minimum of 13°C (56°F), an average of 19°C (67°F), and a maximum of 27°C (81°F). Precipitation is notably higher at 137 mm (5.4 in) over the same number of rainy days, accompanied by a humidity of 88%. For more details on September weather, you can refer to Muroran weather in September.
January and October present contrasting weather conditions in terms of temperature and precipitation. January experiences colder temperatures, with an average around -1°C (30°F), while October is much milder, boasting an average of 14°C (58°F). Additionally, January sees lower precipitation levels at 66 mm over 13 days, compared to October's 127 mm over 12 days, indicating that while October is wetter, the overall number of rainy days is similar. Humidity levels are relatively high in both months, with January at 84% and October slightly lower at 83%. For more details on the weather during October in Muroran, you can visit this link: Muroran weather in October.
January and November present contrasting weather conditions. In January, temperatures are notably colder, with averages hovering around -1°C (30°F), and lows dipping down to -9°C (16°F). This month typically experiences 66 mm (2.6 in) of precipitation over 13 days, accompanied by a high humidity level of 84%. In contrast, November enjoys milder temperatures, with an average of 8°C (46°F) and maximum highs reaching 17°C (62°F). Precipitation is heavier than in January at 95 mm (3.8 in) over the same number of days, but humidity is slightly lower at 79%. For more details on the weather in November, you can visit Muroran weather in November.
In comparing the weather of January and December, January generally presents colder temperatures, with an average of -1°C (30°F) compared to December's warmer average of 1°C (35°F). The maximum temperatures in December can reach up to 13°C (56°F), while January peaks at just 8°C (47°F). Additionally, January experiences slightly less precipitation, totaling 66 mm (2.6 in) over about 13 days, while December has a higher accumulation of 86 mm (3.4 in) spread across 21 days. Humidity levels are relatively high in both months, with January at 84% and December slightly lower at 80%. For more detailed insights, you can check Muroran weather in December.
In January, Muroran experiences a distinct shift from the milder temperatures of late autumn, showcasing a chilly ambiance that can be quite striking. With an average temperature hovering around -1°C (30°F), it is the peak of winter, bringing more frequent precipitation—totaling about 66 mm across 13 rainy days—adding to the month’s crisp atmosphere. The high humidity of 84% can make the cold feel even more penetrating, contrasting sharply with the drier conditions seen in the summer months. This combination of factors sets January apart in Muroran’s climate, marking it as a truly wintry experience. To learn more about seasonal variations, check out Muroran Climate.