Last updated: August 21, 2025
December in Itoigawa, Japan, is marked by a chilly climate that swings between maximums of 18°C (65°F) and minimums plummeting to -4°C (26°F). The average temperature hovers around 4°C (40°F), creating a brisk atmosphere that is both invigorating and refreshing. This month also witnesses significant precipitation, with approximately 294 mm (11.6 in) spread over 24 days, contributing to the lush scenery that characterizes this region. High humidity levels reaching 86% further enrich the winter ambiance, making December a unique time to experience the serene beauty of Itoigawa.
In Itoigawa, Japan, December ushers in a noticeable chill as temperatures begin to drop, with lows around -4°C (26°F) and averages hovering at 4°C (40°F). The serene landscape receives a light dusting of winter's touch, contrasting with the milder previous months. Although daytime highs can reach a pleasant 18°C (65°F), the overall shift from the crisp autumn air to the starkness of winter is palpable. This month marks a transition, as Itoigawa trades the warmth of autumn for the cool embrace of winter, inviting locals and visitors alike to enjoy its tranquil beauty under a frosty sky.
In Itoigawa, Japan, December marks a significant increase in precipitation, with 294 mm (11.6 in) of rain falling across an average of 24 days. This trend positions December as one of the wetter months of the year, only overshadowed by the intense storms of July, which boasts a remarkable 347 mm (13.7 in). What’s notable is that while many other months see a gradual decrease in rainfall as winter approaches, December’s precipitation reflects an abrupt surge before the deep winter sets in, hinting at the start of a cozy, snowy season. As the year ends, the consistently high number of rainy days serves as a reminder of the region's dynamic climate, influencing both its scenery and local activities.
December in Itoigawa, Japan, marks a subtle yet noticeable shift in humidity as the year draws to a close. With humidity levels resting at 86%, December maintains a consistency that resonates with the preceding months, following a slight dip from November's 85%. This month continues the trend of higher humidity that characterizes the late-year period, particularly when compared to the drier spring months of April and May. As the winter chill begins to settle in, the humidity remains relatively high, reflecting the region's climate's characteristic moisture balance—an essential feature that influences not just weather patterns, but also the unique atmosphere of this coastal city.
In December, Itoigawa, Japan, experiences a moderate UV Index of 3, which aligns with the lull seen during the winter months. As the year winds down, residents can expect a burn time of approximately 30 minutes before sun exposure becomes concerning. This drop in UV radiation is a striking contrast to the summer peaks, where indices soared to extreme levels of 11 in July and August. Notably, the UV index remains consistently moderate through late autumn, reinforcing a seasonal trend of lower sun intensity. For those looking to plan outdoor activities, December provides a safe window, with less urgency to seek shade compared to the summer months. For more detailed information on UV levels throughout the year, visit Itoigawa UV Index.
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In Itoigawa, Japan, December offers a cozy retreat with 192 hours of sunshine, wrapping up the year with a gentle glow. This month sees a slight decline in sunlight compared to the vibrant weeks leading up to winter, but still holds its charm amidst the season's chill. As autumn transitions into winter, the overall trend reveals a robust increase in daylight during the spring and summer months, with peak brightness in May at 303 hours. Following that high, sunshine gradually tapers off, particularly in the latter months, making December's daylight a treasured feature as residents and visitors alike prepare for the new year. Despite the decrease, December's sunlight adds a warm touch to the crisp winter days, inviting moments of reflection and appreciation of nature's beauty.
In December, Itoigawa, Japan experiences a notable dip in sunny weather, with only a 27% chance of clear skies. This figure is indicative of a seasonal transition, as sunlight becomes less frequent compared to the preceding months. Notably, the likelihood of sunny days peaks in November at 46%, showcasing a decline into December that emphasizes the shifting climate. As winter approaches, the area sees a consistent pattern of diminishing sunlight, a trend that continues into the colder months of January and February, where chances of sun remain low at 21% and 31%, respectively. While December may not offer the brightest days, it still holds a certain charm as the landscape transforms into a winter wonderland.
In Itoigawa, Japan, the daylight duration experiences a remarkable cycle throughout the year, peaking in May and June with up to 14 hours of sunlight, which invigorates the vibrant local landscapes. As the seasons transition, daylight gradually decreases, starting from December, where it dips back to 9 hours. This reduction, consistent from January through to November, contrasts sharply with the longer, sun-drenched days of summer. By March, the increase in daylight signals the arrival of spring, promising longer and brighter days ahead. The flow of daylight not only marks the changing seasons but also enriches the natural beauty of the area, creating a rhythmic pattern that defines life in Itoigawa.
As December settles in Itoigawa, Japan, the tranquil atmosphere is stirred by a noticeable increase in wind speed, averaging 3.7 m/s (8 mph)—a gentle reminder of nature’s breath as the year winds down. Following a trend of gradual escalation, this month’s winds reflect a return to more brisk conditions after the calmer summer months, where speeds dipped to around 1.6 m/s (3-4 mph) in July and August. The wind begins to rise again from autumn’s relatively mild 3.3 m/s (7 mph) in November, suggesting a shift as the region braces for winter. This ebb and flow of wind patterns serves as a reminder of the changing seasons, with December’s breezes carrying the promise of the upcoming year amidst the serene landscapes of Itoigawa.
Weather in Itoigawa varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Itoigawa, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January present notable differences in weather patterns. While both months experience cold temperatures, December boasts a slightly higher average temperature of 4°C (40°F) compared to January’s 2°C (35°F). In December, temperatures reach a maximum of 18°C (65°F), offering occasional mild days, whereas January sees a much cooler maximum of 11°C (53°F). Precipitation is abundant in both months, with December receiving 294 mm (11.6 in) over 24 days and January slightly lower at 263 mm (10.4 in) over 23 days. Humidity remains high in both months, peaking at 86% in December and rising to 88% in January. For a closer look at January weather specifics, you can refer to Itoigawa weather in January.
December and February showcase distinct weather patterns despite sharing similar humidity levels of 86%. In December, temperatures range from a chilly -4°C (26°F) to a milder max of 18°C (65°F), with an average of 4°C (40°F). The month sees significant precipitation, amounting to 294 mm (11.6 in) over 24 days. In contrast, February experiences even colder temperatures, with a minimum of -6°C (22°F) and a maximum of 12°C (54°F), resulting in an average temperature of 2°C (35°F). Precipitation decreases to 235 mm (9.2 in) over 22 days, signaling a slight reduction in overall wetness. For more detailed insights, you can visit Itoigawa weather in February.
December weather is characterized by colder temperatures, with a minimum of -4°C (26°F) and an average of 4°C (40°F), reaching a maximum of 18°C (65°F). The month is quite wet, receiving 294 mm (11.6 in) of precipitation over 24 days, coupled with high humidity at 86%. In contrast, March brings slightly milder conditions, maintaining a similar minimum of -4°C (24°F) but with an average temperature of 5°C (41°F) and a maximum of 16°C (61°F). Precipitation decreases significantly to 175 mm (6.9 in) across 18 days, with humidity at a lower level of 81%. For more specific insights about March in the area, check out Itoigawa weather in March.
December and April present distinct contrasts in weather. In December, temperatures range from a chilly -4°C (26°F) to a mild 18°C (65°F), with an average of 4°C (40°F). This month experiences notable precipitation, totaling 294 mm (11.6 in) over 24 days, alongside high humidity levels of 86%. In contrast, April sees a rise in temperatures, with a minimum of -1°C (31°F) and a maximum of 21°C (70°F), averaging 9°C (49°F). Precipitation is lower in April and amounts to 174 mm (6.9 in) across 15 days, coupled with decreased humidity at 78%. For more detailed information about April weather, check Itoigawa weather in April.
December weather is characterized by colder temperatures, with a minimum of -4°C (26°F) and an average of 4°C (40°F), while May brings milder conditions, starting at a minimum of 6°C (42°F) and averaging 15°C (59°F). In December, precipitation is more frequent and heavier, with 294 mm (11.6 in) falling over 24 days, compared to May's 138 mm (5.4 in) over just 15 days. Humidity levels remain high in both months, but December is slightly more humid at 86%, while May shows a humid but slightly lower 81%. For detailed insights into May's weather in this region, check out Itoigawa weather in May.
The weather in December is considerably cooler and wetter compared to June. December sees temperatures ranging from a minimum of -4°C (26°F) to a maximum of 18°C (65°F), with an average temperature of 4°C (40°F). It also experiences higher precipitation levels, accumulating 294 mm (11.6 in) over 24 days, and maintains a high humidity of 86%. In contrast, June offers a milder climate with temperatures ranging from a minimum of 10°C (51°F) to a maximum of 26°C (80°F), and an average of 19°C (66°F). Rainfall is less pronounced in June, totaling 168 mm (6.6 in) over just 13 rainy days, with humidity slightly higher at 88%. For more detailed information on June weather, check out Itoigawa weather in June.
December and July present distinctly different weather patterns. In December, temperatures range from a chilly -4°C (26°F) to a mild 18°C (65°F), with an average of around 4°C (40°F). The month experiences significant precipitation of 294 mm (11.6 in) spread over 24 days, and humidity levels average at 86%. In contrast, July boasts warmer conditions with temperatures fluctuating between 18°C (64°F) and a peak of 34°C (94°F), averaging at 24°C (75°F). This month also sees higher precipitation, totaling 347 mm (13.7 in) over 23 days, with humidity slightly elevated at 92%. For a detailed look at July weather, check out Itoigawa weather in July.
December and August present contrasting weather conditions. In December, temperatures range from a chilly -4°C (26°F) at night to a mild 18°C (65°F) during the day, while August boasts much warmer temperatures, with nighttime lows of 18°C (64°F) and daytime highs reaching 33°C (91°F). Both months experience considerable precipitation, with December receiving 294 mm (11.6 in) over 24 days and August slightly less at 265 mm (10.4 in) over 20 days. Additionally, humidity is notably high in both months, at 86% in December and 92% in August. For more information on August weather, you can visit Itoigawa weather in August.
In comparing the weather between December and September, one can observe significant differences in temperature and precipitation. December is notably colder, with temperatures ranging from a minimum of -4°C (26°F) to a maximum of 18°C (65°F), while September enjoys milder temperatures that span from 13°C (56°F) to 32°C (90°F). Precipitation levels are quite similar, with December receiving 294 mm (11.6 in) over 24 days and September slightly less at 265 mm (10.4 in) across 21 days. Humidity is also high in both months, with December at 86% and September at 89%. For a deeper look into September weather specifics, you can check Itoigawa weather in September.
When comparing the weather in December to October, it's clear that December is significantly colder, with temperatures ranging from a minimum of -4°C (26°F) to an average of 4°C (40°F), while October boasts milder temperatures, with lows of 8°C (47°F) and averages around 16°C (62°F). Additionally, December experiences more precipitation, totaling 294 mm (11.6 in) over 24 days compared to October's 258 mm (10.2 in) over 18 days. Despite slightly similar humidity levels—86% in December and 87% in October—October generally feels more pleasant, making it an ideal month for outdoor activities. For a detailed look at the October climate in this region, check out Itoigawa weather in October.
December typically experiences colder temperatures compared to November, with minimums dropping to -4°C (26°F) and average highs reaching only 18°C (65°F), while November sees a milder range with minimums at 0°C (32°F) and maximums up to 22°C (71°F). Consequently, December also has significantly higher precipitation, accumulating 294 mm (11.6 in) over 24 days, compared to November's 185 mm (7.3 in) over 19 days. Humidity levels remain relatively consistent, with December at 86% and November at 85%. For a detailed overview of November's weather in this region, you can visit Itoigawa weather in November.
As December unfolds in Itoigawa, the city experiences a significant transformation in weather, distinct from the milder months that precede it. The chillier temperatures create a stark contrast, drawing a cozy atmosphere that invites warm beverages and indoor activities. Moreover, December is characterized by increased precipitation, with frequent rainy days adding to the season's atmospheric charm and challenges alike. This month also sees heightened humidity, creating a damp, crisp feel in the air that can be invigorating or, at times, uncomfortable. These elements combined make December a unique chapter in Itoigawa's climate story, perfectly encapsulated in more detail at Itoigawa Climate.