Last updated: August 21, 2025
December in Ibaraki, Japan offers a refreshing blend of winter chill and mild afternoons, with temperatures ranging from a maximum of 22°C (71°F) to a minimum of -1°C (30°F). The average temperature hovers around 8°C (47°F), creating a crisp atmosphere ideal for seasonal activities. With precipitation totaling 57 mm (2.2 in) over six rainy days, residents and visitors can expect a mix of clear and wet weather. The month features a humidity level of 83%, which, combined with the cooler temperatures, adds a unique edge to Ibaraki's winter charm. Embrace the season and experience the beauty wrapped in the crisp air and occasional rain.
In December, Ibaraki, Japan experiences a noticeable shift in temperatures as winter takes hold. The month begins with minimums dipping to -1°C (30°F), hinting at the chilliness of the season, while average temperatures hover around 8°C (47°F), providing a brisk yet bearable climate for outdoor activities. Daytime highs can reach up to 22°C (71°F), offering fleeting warmth in contrast to the colder nights. This transitional month marks a steady decline from the milder temperatures of November, setting the stage for the colder months ahead and showcasing the intriguing variations in Ibaraki’s climate.
In December, Ibaraki experiences a moderate level of precipitation, receiving 57 mm (2.2 in) of rainfall over 6 days. This marks a slight increase from November’s considerably lower 44 mm (1.7 in), but it remains significantly less than the summer months of July and August, where rainfall peaks. As the year draws to a close, December’s precipitation can be seen as part of a gradual decline from the wetter months earlier in the year, with the onset of winter bringing more stable weather patterns. This trend highlights Ibaraki's distinct seasonal shift, moving from the heavy, humid rains of summer to the more subdued and sporadic showers of late autumn and winter.
As the year winds down, December in Ibaraki, Japan, sees a return to moderate humidity levels, resting at 83%. This month reflects a slight dip from the mid-year peak in July and August, when humidity soared to 93% and 91%, respectively. The trend throughout the year indicates a humid climate, particularly during the summer months, with June and July recording the highest levels. Interestingly, while December shares a similar humidity with November, it marks a gradual transition towards the drier winter months ahead. Overall, the consistent humidity levels throughout the year portray Ibaraki as a region characterized by its lush, moisture-rich atmosphere.
In Ibaraki, Japan, the December UV Index drops to 3, placing it in the moderate exposure category, with a burn time of approximately 30 minutes. This marks a notable decrease from the extreme levels seen in the summer months, where values peaked at 12 in July, requiring only 10 minutes of sun exposure before risking a burn. As the year progresses from January to December, there's a clear trend from moderate to extreme UV levels, especially in spring and summer, highlighting the importance of sun protection during these peak months. With December's cooler climate, residents can enjoy relatively safer sun exposure, but it's still wise to stay informed on the UV index. For more detailed information, visit Ibaraki UV Index.
UV Risk Categories
As the year draws to a close, December in Ibaraki, Japan, offers a delightful blend of mild sunlight, totaling 221 hours. The month showcases a slight decline in sunshine compared to the vibrant heights of summer, peaking at 305 hours in August. Overall, the trend throughout the year reveals a gradual increase in daylight hours from 185 in January to a spring and early summer crescendo. While December may usher in shorter days, it also stands as a reminder of the bright sunshine that bathed the region in earlier months, setting the stage for a hopeful new year ahead.
In Ibaraki, Japan, December marks a noticeable shift towards brighter days, boasting a 57% chance of sunshine. This increase in sunny weather contrasts with the cloudier months of summer, where the likelihood hovers around 24% to 32%. Interestingly, as the year winds down, December's sunniness outstrips both November's 52% and even October's 53%, suggesting a festive atmosphere as winter sets in. Overall, this trend highlights December as a time when residents and visitors can embrace the cheerful rays of the sun amidst the chill of the season.
In Ibaraki, Japan, the daylight duration shows a distinct seasonal rhythm as the year unfolds. Starting from January through February, the day length stabilizes at 10 hours, providing a steady but brief exposure to sunlight. As spring arrives in March, daylight begins to stretch, reaching 11 hours, and this gradual increase continues into April and May, where it peaks at 13 hours. The days remain long during the summer months of June and July, boasting 14 hours of daylight, perfect for outdoor activities and enjoying nature. However, as summer fades into autumn, we observe a steady decline; by December, daylight dwindles to just 9 hours, marking the shortest days of the year. This cycle of fluctuating daylight not only influences the landscape but also enriches the cultural rhythm of Ibaraki's residents throughout the seasons.
As December arrives in Ibaraki, Japan, the wind begins to pick up slightly, averaging 2.8 m/s (6 mph)—a refreshing change from the lighter breezes of summer. This subtle increase brings a crispness to the air, contrasting with the gentle 1.8 m/s (4 mph) winds of June. While the winter months typically showcase a consistent flow around 2.7 m/s (6 mph), December's winds offer a hint of briskness, gently heralding the arrival of colder days. Overall, the trend reveals a gradual rise as the year winds down, providing Ibaraki residents a taste of the invigorating gusts that winter brings.
Weather in Ibaraki varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ibaraki, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather features a wider temperature range with a minimum of -1°C (30°F) and a maximum of 22°C (71°F), averaging around 8°C (47°F). The month experiences a total precipitation of 57 mm (2.2 in) over six days, accompanied by relatively high humidity at 83%. In contrast, January brings slightly cooler conditions, with a minimum of -3°C (26°F) and a maximum of 18°C (64°F), averaging at 6°C (42°F). Precipitation decreases to 46 mm (1.8 in) over the same number of rainy days and humidity remains similar at 82%. For a detailed look at the weather during this month, you can visit Ibaraki weather in January.
In December, the weather features a more moderate minimum temperature of -1°C (30°F) and an average high of 22°C (71°F), with a total precipitation of 57 mm (2.2 in) over 6 days. The humidity hovers around 83%, making it feel a bit chilly. In contrast, February sees a slightly colder minimum temperature of -3°C (26°F) with an average high of 20°C (68°F) and a similar total precipitation of 60 mm (2.3 in) over the same number of days. Humidity in February drops to 79%, providing a drier feel compared to December. For more details on the weather conditions in February, be sure to check Ibaraki weather in February.
In comparing the weather between December and March, we see some notable differences. December presents a cooler climate with average temperatures ranging from a minimum of -1°C (30°F) to a maximum of 22°C (71°F) and an average of 8°C (47°F). The month experiences 57 mm (2.2 in) of precipitation over about 6 days, with a relatively high humidity level of 83%.
In contrast, March begins to warm up slightly, with average temperatures increasing to a minimum of -1°C (31°F) and a maximum of 23°C (73°F), averaging 10°C (51°F). However, it also brings more precipitation, totaling 109 mm (4.3 in) across 11 days, albeit with lower humidity at 74%. For a detailed look at what to expect in March, you can visit Ibaraki weather in March.
December and April exhibit notable differences in weather patterns. In December, temperatures generally range from a chilly minimum of -1°C (30°F) to a pleasant maximum of 22°C (71°F), with an average of around 8°C (47°F). During this month, the region experiences approximately 57 mm (2.2 in) of precipitation across about 6 days, accompanied by a high humidity of 83%. In contrast, April brings milder temperatures, with a minimum of 3°C (37°F) and a maximum of 26°C (79°F), resulting in an average temperature of 15°C (59°F). However, April is wetter, with 135 mm (5.3 in) of rain spread over about 10 days, while humidity slightly decreases to 76%. For more specific details on weather during this month, you can explore Ibaraki weather in April.
The weather in December is markedly cooler than in May, with average temperatures ranging from a chilly -1°C (30°F) to a mild 22°C (71°F), while May sees much warmer conditions with temperatures between 8°C (47°F) and a high of 31°C (88°F). Additionally, May experiences a significant increase in precipitation, with 150 mm (5.9 in) falling over 10 days compared to December’s 57 mm (2.2 in) spread over just 6 days. Despite both months having a humidity level of 83%, the overall feel of May is significantly warmer and wetter, making it a more vibrant time of the year. For more details on May's climate, check out Ibaraki weather in May.
In December, the weather is quite cool, with temperatures ranging from a low of -1°C (30°F) to a pleasant high of 22°C (71°F). The month sees relatively low precipitation, totaling 57 mm (2.2 in) over about six days, while humidity averages around 83%. In contrast, June brings significantly warmer conditions, with temperatures spanning from a minimum of 14°C (58°F) to an average high of 32°C (89°F). Rainfall increases noticeably during this month, with 147 mm (5.8 in) of precipitation spread over about 12 days, and humidity rises slightly to 87%. For more details about the weather specifics in June, you can check Ibaraki weather in June.
In December, the weather is considerably cooler with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 22°C (71°F). The month sees an average temperature of 8°C (47°F) and experiences relatively low precipitation, measuring 57 mm (2.2 in) over about 6 days, with humidity at 83%. In stark contrast, July brings significantly warmer conditions with temperatures soaring from a minimum of 20°C (69°F) to a blistering maximum of 37°C (99°F). The average temperature in July is 28°C (82°F), accompanied by high precipitation levels of 282 mm (11.1 in) over 18 days, and humidity rises to 93%. For more details on the weather in July specifically, check out Ibaraki weather in July.
December and August present starkly contrasting weather conditions. In December, temperatures range from a chilly minimum of -1°C (30°F) to a comfortable maximum of 22°C (71°F), with an average of 8°C (47°F). The month sees moderate rainfall of 57 mm (2.2 in) over about 6 days, accompanied by a relatively high humidity level of 83%. In contrast, August experiences a much warmer climate, with temperatures soaring from a low of 19°C (66°F) to a scorching high of 38°C (101°F) and an average of 29°C (85°F). This month also brings significant rainfall, totaling 183 mm (7.2 in) over 12 days, and even higher humidity at 91%. For more detailed insights on August weather, you can check Ibaraki weather in August.
December and September present a stark contrast in weather conditions. In December, temperatures range from a chilly minimum of -1°C (30°F) to a comfortable maximum of 22°C (71°F), with an average of 8°C (47°F). The month sees relatively low precipitation at 57 mm (2.2 in) over about 6 days and a humidity level of 83%. In contrast, September boasts significantly warmer temperatures, starting at a minimum of 15°C (59°F) and reaching highs of up to 37°C (99°F), with an average of 25°C (78°F). The month experiences much higher precipitation, accumulating 169 mm (6.7 in) across approximately 15 days, while humidity is slightly higher at 87%. For a more detailed look at September weather, check out Ibaraki weather in September.
In comparing the weather of December and October, it's clear that December experiences much colder temperatures, with a minimum of -1°C (30°F) compared to October's milder minimum of 8°C (46°F). The average temperature in December is around 8°C (47°F), significantly lower than October's average of 20°C (67°F). While October can reach maximum temperatures of 33°C (91°F), December only climbs to a maximum of 22°C (71°F). Precipitation levels also differ, with October receiving a substantial 230 mm (9.0 in) over 12 days, compared to December’s 57 mm (2.2 in) over just 6 days, making October a much wetter month. Humidity remains relatively constant, with December at 83% and October slightly higher at 85%. For more detailed information about October weather, you can visit Ibaraki weather in October.
In comparing the weather between November and December, we can observe a notable drop in temperature during the transition into December. While November experiences a minimum temperature of 2°C (35°F) and an average of 13°C (56°F), December sees a cooler minimum of -1°C (30°F) and an average of 8°C (47°F). Additionally, December's maximum temperature reaches 22°C (71°F), which is lower than November's peak of 25°C (78°F). Precipitation slightly increases from 44 mm (1.7 in) in November to 57 mm (2.2 in) in December, with both months having precipitation on 6 days. Humidity remains constant at 83% in both months, contributing to a generally damp feel. For more details, you can check Ibaraki weather in November.
As December ushers in cooler temperatures in Ibaraki, the climate distinctly shifts from the warmer months, offering a refreshing contrast. The average temperature dips significantly, while the chilly evenings can plunge close to freezing, making it a stark departure from the milder autumn days. Additionally, while December does bring some rainfall, it is less frequent than the summer months, though the humidity remains notably high, creating a crisp atmosphere. Embrace the unique charm of Ibaraki's December weather, and for more detailed insights, visit Ibaraki Climate.