Last updated: August 21, 2025
December in Izu, Japan offers a delightful winter experience characterized by mild temperatures, with a maximum reaching 21°C (69°F) and an average of 9°C (49°F). While the nights can get quite chilly, dipping to a minimum of 0°C (32°F), the overall climate remains inviting for visitors. Expect around 74 mm (2.9 in) of precipitation over approximately 8 days, creating a refreshing atmosphere complemented by a humidity level of 78%. This blend of mild weather and occasional rainfall enhances Izu’s vibrant landscapes, making December a unique time to explore this enchanting region.
In December, Izu, Japan, experiences a gentle transition into winter, with temperatures showcasing a notable shift. The minimum temperature hovers around 0°C (32°F), nudging just above freezing, while the average settles at a mild 9°C (49°F), making it one of the cooler months of the year. Maximum temperatures reach a comfortable 21°C (69°F), allowing for pleasant days amid the crisp air. Compared to the previous month, November, which offers a warmer average of 14°C (58°F), December signals a cooling trend as the region prepares for the chillier January ahead. This month’s temperatures create a cozy atmosphere perfect for enjoying the local winter scenery and festivities.
In December, Izu, Japan, experiences a notable shift in precipitation patterns as the year draws to a close. With an average rainfall of 74 mm (2.9 in) spread over 8 days, December marks a transition from the heavier deluges of the summer months. This decline follows a peak in July with 326 mm (12.8 in), illustrating a clear trend of diminishing precipitation as the winter season approaches. While the month is relatively drier compared to the earlier months, particularly when juxtaposed with June's substantial 263 mm (10.3 in) and October's 305 mm (12.0 in), it still provides a refreshing end to the year. The lighter rainfall in December also signifies a return to a more tranquil climate, creating a serene atmosphere that complements the festive season.
In Izu, Japan, December brings a humidity level of 78%, offering a noticeable drop from the peak summer months but still embracing the region's characteristic dampness. As the year winds down, humidity levels gradually decrease from July's high of 93%, illustrating a seasonal trend where the air becomes drier as autumn progresses. Following November’s 80%, December experiences a slight retreat, setting the stage for the cooler winter months ahead. Overall, the data reveals a natural ebb and flow, with winter humidity remaining comfortably steady, ensuring that the lush, vibrant landscapes of Izu continue to thrive.
As the year draws to a close in December, Izu, Japan experiences a return to a more moderate UV Index level of 4, accompanied by a burn time of 30 minutes. This marks a noticeable dip from the extreme and very high UV levels noted during the summer months, such as July and May when the UV Index peaked at 12 and 11 respectively, dictating burn times as short as 10 minutes. The late autumn months of November and October saw a gradual decrease in UV exposure, ultimately leading to the gentler December sun. With this seasonal shift, it's a great time for outdoor activities while still being mindful of skin protection. For a deeper understanding of UV trends throughout the year, visit Izu UV Index.
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In December, Izu, Japan, basks in a delightful 227 hours of sunshine, providing a gentle transition into winter. This month showcases a trend of light retention, slightly lower than the beautifully bright days of late spring and summer, which peak in August with a striking 285 hours. As the year winds down, sunlight continues to outshine the colder months, eclipsing the earlier winter months of January and February. With each passing month, from the warmth of March’s 249 hours to October’s 201 hours, December offers a crisp, sunlit finale to the year, inviting both locals and visitors to revel in its serene glow before the arrival of winter's chill.
The likelihood of sunny weather in December in Izu, Japan, stands out with a 72% chance of sunshine, making it one of the sunniest months of the year. This trend marks a significant leap from the cloudy conditions typical in late spring and summer, where the chances of sunny days dip as low as 22% in June and 25% in May. As the year winds down, the probability of clear skies begins to rise notably, with November already boasting a 62% chance. December's pattern reflects a welcome shift toward brighter days, following months characterized by gloom, ultimately offering a delightful backdrop for year-end festivities and exploration in the picturesque region of Izu.
As the year draws to a close, December in Izu, Japan, experiences one of the shortest daylight durations, with only 9 hours of light. This trend marks a gradual decline from the peak of 14 hours seen in the vibrant months of May through July, where long sunny days invite outdoor activities. The transition from late autumn to winter brings a notable decrease in daylight, dropping from 10 hours in November to 9 hours in December. With the days shortening, the cooling temperatures encourage a cozy atmosphere, perfect for enjoying the serene beauty of Izu's winter landscapes. The steady fluctuation throughout the year highlights Izu’s distinct seasonal shifts, characterized by longer days in the spring and summer, ultimately paving the way for the quiet introspection that winter often brings.
As December arrives in Izu, Japan, the wind begins to pick up, averaging 3.3 m/s (7 mph), mirroring the gusts of January. This month showcases a noticeable shift, with wind speeds gradually increasing from the summer lull, where July and June lingered at a gentle 2.0 m/s (4-5 mph). The autumn months bring a slight rise, with November displaying 3.1 m/s before December solidifies this trend. Interestingly, the variability over the year illustrates a dynamic character in Izu's climate—while summer winds tend to be milder, late fall and winter herald a return to more invigorating breezes, enhancing the chilly charm of the season. As the winds dance through December, they carry with them the promise of a refreshing and crisp end to the year.
Weather in Izu varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Izu, focusing on differences in temperature, rainfall, humidity, and UV levels.
December typically offers a milder climate compared to January, with average temperatures ranging from a minimum of 0°C (32°F) to a maximum of 21°C (69°F). In December, the region experiences around 74 mm (2.9 in) of precipitation over approximately 8 days, contributing to a relatively high humidity level of 78%. In stark contrast, January ushers in cooler weather, with temperatures dipping to a minimum of -2°C (29°F) and a maximum of 18°C (64°F). Precipitation also decreases slightly to 68 mm (2.7 in) but over fewer days, totaling around 5 days, resulting in a humidity level of 76%. For a deeper look into January's weather patterns, you can check out Izu weather in January.
December generally features mild temperatures with a minimum of 0°C (32°F) and an average of 9°C (49°F), while February sees a slight dip with a minimum temperature of -1°C (30°F) and an average of 7°C (45°F). Both months experience similar levels of precipitation, with December receiving 74 mm (2.9 in) and February having 83 mm (3.2 in), but each month averages about 8 days of rain. Humidity is slightly higher in December at 78% compared to February's 74%. For a detailed look at weather conditions in February, check out this link: Izu weather in February.
In December, temperatures range from a minimum of 0°C (32°F) to a maximum of 21°C (69°F), with an average of 9°C (49°F). This month experiences 74 mm (2.9 in) of precipitation over 8 days, coupled with a relatively high humidity of 78%. In contrast, March sees slightly warmer temperatures, with a minimum of 1°C (34°F) and a maximum of 22°C (72°F), resulting in an average temperature of 11°C (51°F). However, March is notably wetter, with 196 mm (7.7 in) of precipitation spread across 13 days and a lower humidity level of 70%. For more details on the weather in March, visit Izu weather in March.
In December, temperatures typically range from a chilly 0°C (32°F) to a mild 21°C (69°F), with an average of 9°C (49°F), while April offers a warmer climate with temperatures spanning from 3°C (38°F) to a maximum of 24°C (76°F) and an average of 14°C (57°F). Precipitation is also more abundant in April, with 168 mm (6.6 in) over 11 days compared to December's 74 mm (2.9 in) over 8 days. Despite the increased rainfall in April, humidity levels are slightly lower at 74%, compared to December’s higher humidity of 78%. For a closer look at the weather during April, check out Izu weather in April.
In December, temperatures in Izu range from a chilly 0°C (32°F) at night to a mild 21°C (69°F) during the day, with an average temperature of 9°C (49°F). The month experiences about 74 mm (2.9 in) of precipitation over 8 days, and humidity levels hover around 78%. In contrast, May brings warmer conditions, with nighttime lows of 9°C (48°F) and daytime highs reaching 28°C (82°F), resulting in an average temperature of 18°C (65°F). Moreover, May has significantly higher precipitation at 194 mm (7.6 in) spread over 12 days, and humidity slightly increases to 81%. For more detailed weather specifics, check Izu weather in May.
December and June present contrasting weather conditions. In December, temperatures range from a chilly 0°C (32°F) at night to a mild 21°C (69°F) during the day, with an average temperature of 9°C (49°F). This month experiences moderate rainfall, totaling 74 mm (2.9 in) over eight days, while humidity hovers around 78%.
In stark contrast, June brings significantly warmer temperatures, with nighttime lows of 15°C (59°F) and daytime highs reaching up to 29°C (85°F). The average temperature rises to 21°C (71°F), but the month is much wetter, accumulating 263 mm (10.3 in) of precipitation across 17 days, accompanied by even higher humidity levels at 88%. For a more detailed look at June conditions, you can check Izu weather in June.
December weather presents a cooler climate, with average temperatures ranging from 0°C (32°F) at night to a pleasant 21°C (69°F) during the day. In contrast, July showcases a much warmer atmosphere, with temperatures typically between 18°C (65°F) and a hot 33°C (92°F). While December experiences moderate rainfall of 74 mm (2.9 in) over about 8 days, July sees significantly increased precipitation, totaling 326 mm (12.8 in) across 19 days, contributing to a much higher humidity level of 93%. For more detailed insights into the weather conditions during July, check out Izu weather in July.
December and August present distinctly different weather patterns. In December, temperatures range from a chilly minimum of 0°C (32°F) to a mild maximum of 21°C (69°F), with an average temperature of 9°C (49°F). This month experiences about 74 mm (2.9 in) of precipitation over 8 days and maintains a humidity level of 78%.
In contrast, August is characterized by much warmer conditions, with temperatures soaring from a minimum of 20°C (68°F) to a maximum of 34°C (94°F), averaging 27°C (81°F). Additionally, August sees significantly more rainfall, totaling 176 mm (6.9 in) across 17 days, and a higher humidity of 90%. For more detailed insights on the weather in August, you can check Izu weather in August.
In December, temperatures are notably cooler, with a minimum of 0°C (32°F) and an average of 9°C (49°F), contrasting sharply with September's milder climate, where temperatures range from a minimum of 15°C (60°F) to an average of 23°C (74°F). Additionally, December experiences significantly less precipitation at 74 mm (2.9 in) over 8 days, compared to September's much wetter conditions, which sees 221 mm (8.7 in) over 20 days. Humidity levels are also different, with December at 78% and September slightly higher at 86%. For more details about September weather, you can refer to Izu weather in September.
In comparing December and October weather, October tends to be much warmer, with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 29°C (84°F). In contrast, December experiences cooler conditions, with temperatures averaging between 0°C (32°F) and 21°C (69°F). October also sees significantly more rainfall, totaling 305 mm (12.0 in) over 16 days, compared to December's 74 mm (2.9 in) spread across just 8 days. Additionally, humidity levels are slightly higher in October at 83%, compared to 78% in December. For more detailed insights on October weather in Izu, you can check Izu weather in October.
In comparing the weather between November and December, we notice a shift in temperatures and precipitation levels. December typically experiences cooler temperatures, with a minimum of 0°C (32°F) and an average of 9°C (49°F), while November shows slightly milder conditions, with minimum temperatures of 3°C (38°F) and an average of 14°C (58°F). Additionally, December sees less rainfall, recording 74 mm (2.9 in) over 8 days compared to November's 94 mm (3.7 in) over 10 days. Humidity levels are similar, but slightly higher in November at 80%, compared to December's 78%. For more detailed insights into November's weather, you can check Izu weather in November.
As December envelops Izu, the weather begins to shift noticeably from the milder months preceding it. With average temperatures ranging from chilly nights to pleasantly warm days, this month introduces a crispness in the air that signals the arrival of winter. Precipitation is relatively moderate, with sporadic rainy days contributing to the lush landscapes that Izu is famous for. The humidity remains high, but the cooler temperatures provide a refreshing balance compared to the more humid summer months. For those planning to visit during this time, understanding the December weather is crucial to maximize the experience in this beautiful region. For more insights on what to expect throughout the year, check out Izu Climate.