Last updated: August 21, 2025
In Ishikari, Japan, December ushers in a chill, with an average temperature hovering around -1°C (31°F) and daily highs reaching a mild 13°C (56°F). The frigid nights can dip as low as -11°C (13°F), making warm layers a must for locals and visitors alike. Rain is a frequent visitor this month, with 123 mm (4.8 in) falling over the course of 27 days, contributing to a humid atmosphere that averages a comfortable 80%. Embrace the beauty of winter in Ishikari, where the frosty temperatures transform the landscape into a serene, snow-kissed wonderland.
In Ishikari, Japan, December ushers in the heart of winter, characterized by significantly colder temperatures. The month starts with a minimum of -11°C (13°F), reaching an average of -1°C (31°F) during the day, while highs peak at a modest 13°C (56°F). This chilly climate marks a continuation of the downward trend in temperatures from November, highlighting the transition from late autumn into winter's grasp. As the days grow darker and snow begins to blanket the landscape, the picturesque scenery adds a serene beauty to the brisk atmosphere, inviting residents and visitors alike to enjoy winter activities against a stunning backdrop.
As December unfolds in Ishikari, Japan, the region experiences a notable increase in precipitation, accumulating 123 mm (4.8 in) over the month. This spike is part of a longer trend, as December marks one of the wettest months, closely following November's significant total of 153 mm (6.0 in). What stands out is the dramatic rise in precipitation days, reaching 27 days, the highest of the year, indicating a steady, albeit gentle, rhythm of rain throughout the month. This pattern suggests that while winter settles in, rain remains a consistent companion, contrasting sharply with the dryer months like June and July. Overall, December's weather captures the transition into winter, where the persistent rainfall serves both as a reminder of the season's chill and a precursor to the snow that often follows.
In Ishikari, Japan, December brings a humidity level of 80%, slightly lower than the year's peak but still indicative of the region's generally moist climate. As the year progresses from January's 84% humidity down to November's 79%, a noticeable trend emerges: while the winter months maintain relatively high humidity levels, the peak occurs in the summer, with July and August soaring to 93% and 95%, respectively. This classic seasonal ebb and flow showcases Ishikari's transition from the crisp winter air to the damp warmth of summer, making December a month of moderate humidity nestled between the extremes of the year.
In December, Ishikari, Japan experiences a notable decrease in UV exposure, with the UV Index dropping to 2, categorizing it as low. This is a stark contrast to the peak summer months, where values soared to 10, indicating a very high risk of harm from unprotected sun exposure. With a burn time of 45 minutes, residents and visitors can enjoy the outdoors with minimal concern for sunburn. This trend towards lower UV levels continues from November and signals the onset of winter, making it a great time to enjoy seasonal activities without the intense sun protection needed in the warmer months. For more detailed information, check out the Ishikari UV Index.
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In Ishikari, Japan, December wraps up the year with a modest 163 hours of sunshine, reflecting a gradual decline from the vibrant glow of summer months. Following the sunniest peak of 321 hours in July, the trend shows a steady reduction as the seasons shift to winter, with hours tapering off significantly in November and December. Despite this decrease, December still offers a gentle warmth from the sun, providing a comforting contrast to the cold. As the community buzzes with holiday cheer, the soft light of December reminds residents of the sun's lingering presence, hinting at the brighter days yet to come in the new year.
In Ishikari, Japan, the likelihood of sunny weather in December stands at 34%, positioning it as a month that transitions into winter while still offering occasional bright days. As we examine the trend throughout the year, a noticeable peak occurs in June, where the sunshine chance is 47%, gradually declining as the colder months approach. Notably, December's probability echoes the patterns observed in October and November, where the chances hover around the mid-thirties. While this suggests a dip in sunshine compared to the sunnier spring months, December's weather offers a cool charm, highlighting that even in the depths of winter, rays of sunshine may still break through the clouds, enticing residents and visitors alike.
In Ishikari, Japan, the evolution of daylight duration throughout the year paints a captivating portrait of the changing seasons. Starting with 9 hours in January, the days gradually lengthen, peaking at a generous 15 hours in June. This surge into summer is followed by a gradual decline as daylight decreases to 14 hours in July and 13 hours in August, heralding the arrival of autumn. As the year winds down, the light diminishes once more, falling to 12 hours in September and returning to 9 hours by December, mirroring the start of the year. This rhythmic pattern of increasing and decreasing daylight not only marks the passage of time but also enhances the seasonal charm unique to Ishikari.
As December embraces Ishikari, Japan, the winds begin to gather strength, averaging 5.1 m/s (12 mph), comparable to the earlier winter months of January and February. This uptick from the calmer summer months, where winds drifted around 3.3 to 3.7 m/s (7 to 8 mph), highlights a distinct seasonal shift. The gradual rise in wind speed throughout the months shows how winter’s chill invigorates the air, contrasting starkly with the gentle breezes of June and July. With November also holding steady at 5.0 m/s (11 mph), the December winds usher in a robust start to the winter, hinting at the dynamic interplay between cold fronts and the topography of the region. As the year ends, Ishikari’s winds serve as a reminder of nature’s rhythm, changing yet consistently invigorating its landscapes.
Weather in Ishikari varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ishikari, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather is slightly milder with an average temperature of -1°C (31°F) and maximums reaching up to 13°C (56°F), making it a bit more temperate. However, it also experiences a higher level of precipitation, totaling 123 mm (4.8 in) over 27 days, accompanied by a humidity level of 80%. In contrast, January brings colder conditions, with an average temperature of -3°C (26°F) and maximums around 6°C (42°F). Precipitation decreases significantly to 74 mm (2.9 in) across 19 days and a slight uptick in humidity to 84%. For a detailed look at January's weather, check out Ishikari weather in January.
December and February in Ishikari present quite distinct weather patterns. In December, temperatures range from a minimum of -11°C (13°F) to a maximum of 13°C (56°F), with an average of -1°C (31°F). The month is relatively wetter, receiving 123 mm (4.8 in) of precipitation over 27 days, contributing to a humidity level of 80%. In contrast, February experiences slightly colder temperatures, with a minimum of -12°C (11°F) and a maximum of 5°C (42°F), averaging -3°C (27°F). There is less precipitation at 84 mm (3.3 in) over 21 days, and humidity rises slightly to 83%. For a more detailed look at February weather, you can visit Ishikari weather in February.
In December, temperatures can plummet to a minimum of -11°C (13°F), with an average of -1°C (31°F) and a maximum reaching 13°C (56°F). The month is characterized by significant precipitation totaling 123 mm (4.8 in) over 27 days, resulting in a humidity level of around 80%. In contrast, March sees slightly milder weather, with temperatures ranging from a minimum of -8°C (18°F) to an average of 1°C (35°F) and a maximum of 14°C (57°F). Precipitation decreases to 80 mm (3.2 in) across 14 days, and humidity remains comparable at 81%. For a more detailed look at the weather in March, check out Ishikari weather in March.
In December, the weather is notably colder, with temperatures ranging from a brisk -11°C (13°F) to a mild 13°C (56°F) and an average of -1°C (31°F). The month sees considerable precipitation, totaling 123 mm (4.8 in) over 27 days, contributing to high humidity levels of 80%. In contrast, April brings a more temperate climate, with temperatures ranging from -2°C (28°F) to a pleasant 20°C (68°F) and an average of 6°C (43°F). Precipitation decreases significantly to 73 mm (2.9 in) over just 11 days, while humidity hovers slightly higher at 81%. The transition from the harsh winter of December to the more moderate spring conditions in April is quite remarkable. For more details on the April weather in Ishikari, you can visit Ishikari weather in April.
December and May present stark contrasts in weather. December experiences cold temperatures, with a minimum of -11°C (13°F) and an average of -1°C (31°F), accompanied by frequent precipitation over 27 days, totaling 123 mm (4.8 in). The humidity remains high at 80%, contributing to a chilly and damp atmosphere. In contrast, May brings a more temperate climate, with minimum temperatures of 4°C (40°F) and an average of 12°C (54°F), reaching up to 27°C (81°F) at times. Precipitation during this month is lighter, amounting to 89 mm (3.5 in) over just 12 days, and the humidity is slightly higher at 86%. This shift in weather patterns marks the transition from winter's grip to the warmth of spring. For more insights on May weather, you can check Ishikari weather in May.
December and June present contrasting weather patterns. In December, temperatures can plummet to a minimum of -11°C (13°F) and have an average of -1°C (31°F), while reaching a maximum of 13°C (56°F). The month is marked by significant precipitation, totaling 123 mm (4.8 in) over 27 days, and a humidity level of 80%. In contrast, June experiences milder temperatures, with a minimum of 8°C (47°F), an average of 16°C (61°F), and a maximum of 24°C (76°F). Although June sees slightly less precipitation at 103 mm (4.1 in), it occurs over just 10 days, contributing to a higher humidity level of 87%. For more detailed information on the June weather specifics, check Ishikari weather in June.
December and July present a striking contrast in weather. In December, temperatures can plummet as low as -11°C (13°F), with an average hovering around -1°C (31°F) and a maximum reaching 13°C (56°F). The month is characterized by high humidity at 80% and frequent precipitation, occurring on 27 days and totaling 123 mm (4.8 in). In contrast, July boasts a much milder climate, with temperatures ranging from a minimum of 11°C (52°F) to a comfortable average of 21°C (69°F), peaking at 30°C (86°F). This summer month is also drier, with only 11 days of precipitation contributing to a total of 104 mm (4.1 in) and a slightly higher humidity of 93%. For more details, check out Ishikari weather in July.
December and August present stark contrasts in weather. In December, temperatures can plummet to a minimum of -11°C (13°F), with an average of -1°C (31°F) and a maximum of 13°C (56°F). The month is characterized by high humidity at 80% and significant precipitation, totaling 123 mm (4.8 in) spread over 27 days. In contrast, August boasts a much warmer climate, featuring minimum temperatures of 15°C (59°F) and average highs around 30°C (86°F). While it experiences higher precipitation at 182 mm (7.2 in), it does so over fewer days—only 13—resulting in a humidity level of 95%. Overall, December offers a cold winter atmosphere, whereas August is warm and humid, making it a perfect month for summer activities. For more information, you can check out Ishikari weather in August.
In December, the weather is significantly colder compared to September, with temperatures ranging from a minimum of -11°C (13°F) to a maximum of 13°C (56°F), while September boasts much milder conditions, with temperatures averaging between 10°C (49°F) and 28°C (83°F). Additionally, December experiences more frequent precipitation, with 123 mm (4.8 in) over 27 days, in contrast to September's 103 mm (4.0 in) spread over just 13 days. Humidity levels are comparable, with December at 80% and September slightly higher at 88%. For more detailed insights on September's weather, visit Ishikari weather in September.
December and October exhibit stark contrasts in weather patterns. In December, temperatures drop significantly, with averages around -1°C (31°F) compared to October's milder average of 13°C (56°F). While December experiences a minimum of -11°C (13°F) and can reach a maximum of 13°C (56°F), October sees a more comfortable range with temperatures ranging from 4°C (40°F) to a pleasant 24°C (75°F). Additionally, December has more precipitation, totaling 123 mm (4.8 in) over 27 days, compared to October's 129 mm (5.1 in) over just 16 days. Humidity levels remain similar, with December at 80% and October slightly higher at 83%. For a detailed look at October's weather, you can visit Ishikari weather in October.
December weather contrasts notably with that of November, showcasing a significant drop in temperature. While November averages around 6°C (44°F) with a maximum of 17°C (63°F), December's average temperature plummets to -1°C (31°F), with highs reaching only 13°C (56°F) and lows dipping to -11°C (13°F). In terms of precipitation, December sees a decrease with 123 mm (4.8 in) falling over 27 days compared to November's 153 mm (6.0 in) over 22 days. Humidity levels remain similar, with December at 80% and November at 79%. For more detailed information about November weather, check out Ishikari weather in November.
As December settles in, Ishikari experiences a notable shift in weather compared to the preceding months. Temperatures dip significantly, with averages hovering around freezing, while the maximum rarely exceeds a mild 13°C. This month also brings a high level of precipitation, contributing to the area's characteristic winter landscape. The cold and damp conditions, marked by an 80% humidity rate, create a unique ambiance that sets December apart from the rest of the year. For a deeper understanding of Ishikari's seasonal changes, explore more at Ishikari Climate.