Last updated: August 21, 2025
In Shimoda, Japan, December brings a delightful blend of mild temperatures and refreshing coastal breezes. The maximum temperature hovers around 21°C (69°F), while the average settles at a comfortable 11°C (53°F), dipping to a cool 3°C (38°F) at night. Visitors can expect about 88 mm (3.5 in) of rain over 10 days, contributing to a humidity level of 78%, which adds a touch of freshness to the air. This month encapsulates the charm of winter in a coastal setting, making it a unique time to experience the beauty of Shimoda.
As December settles in Shimoda, Japan, the temperatures begin to dip, offering a more crisp and invigorating atmosphere. The month starts with a minimum temperature of 3°C (38°F), rising to an average of 11°C (53°F), and peaking at a maximum of 21°C (69°F). This drop from the milder conditions of November marks a transition into winter, yet it remains comparatively mild, particularly when contrasted with the frigid temperatures seen in other regions. December’s climate is characterized by a gentle coolness, ideal for enjoying the beautiful coastal scenery without the sweltering heat of summer. This month, Shimoda presents a welcoming blend of chill and warmth, setting the stage for a delightful winter experience.
In December, Shimoda, Japan, experiences a notable shift in precipitation patterns, receiving an average of 88 mm (3.5 in) of rain over 10 days. This marks a decrease from the heavier rainfall seen in the preceding months, especially during June and July when precipitation peaks at 300 mm (11.8 in) and 360 mm (14.2 in), respectively. This trend of diminishing rainfall leads into winter, positioning December as a transitional month that serves as a gentle reminder of the drier conditions ahead. The relatively lower precipitation not only provides a brief respite from the intense rainfall that characterizes the summer months but also sets the stage for the cool, dry winter to follow.
As December settles in Shimoda, Japan, the humidity begins to ease slightly, averaging 78% this month. This marks a subtle decline from the summer months, which peaked in July with a high of 93%, creating a palpable sense of moisture in the air. While winter is approaching, December's humidity still carries a notable weight, influenced by the preceding months where levels hovered between 80% and 88%. The transition from autumn to winter reflects a delicate balancing act, as the region’s humidity gradually recedes from the summer highs, yet remains comfortably higher than earlier in the year, when March's humidity dipped to 70%. Thus, December in Shimoda offers a unique blend of lingering warmth and the crisp anticipation of winter ahead.
In December, Shimoda, Japan experiences a UV Index of 4, placing it in the moderate exposure category, which allows for a burn time of 30 minutes. As the year winds down, there's a noticeable dip in UV intensity compared to the peak summer months of July and August, which recorded extreme levels of 12 and 11, respectively. However, December's UV levels still demand vigilance for those enjoying outdoor activities. This trend of decreasing UV exposure from the scorching heights of summer to the more moderate levels of late fall suggests that while sun safety remains important, the urgency lessens as winter approaches. For more detailed information on UV levels throughout the year, visit Shimoda UV Index.
UV Risk Categories
December in Shimoda, Japan, welcomes a gentle embrace of sunlight, offering a comforting contrast to the chill of winter. With 231 hours of sunshine, the month enjoys a modest glow, comparable to November's 229 hours. As the year winds down, December experiences a slight dip from the vibrant summer months, where sunshine peaks at an impressive 311 hours in August. However, this winter month still outshines the dreariness often associated with the season, showcasing the city's ability to balance cold weather with bursts of brightness. Overall, Shimoda's annual trend reveals a steady decline in sunlight as one moves from the sun-soaked summer to the cooler winter months, yet every hour of December's sunshine feels like a precious gift of warmth amid the crisp air.
In December, Shimoda, Japan experiences a notable increase in sunshine, with a 72% chance of sunny weather, making it one of the brightest months of the year. This upswing follows November's already healthy 60% likelihood of sun and stands in stark contrast to the cloudier summer months where chances drop to around 24% to 37%. As the year draws to a close, the shift towards clearer skies hints at December being a prime time for outdoor exploration and enjoyment, highlighting a satisfying trend for those seeking sun in the winter season.
In Shimoda, Japan, the daylight duration exhibits a fascinating seasonal rhythm. Starting the year with 10 hours of daylight in both January and February, the days gradually lengthen through the spring months, peaking at 14 hours in June and July. As summer fades into autumn, daylight begins to wane, with September still holding onto 12 hours before dropping to 10 hours in November. By December, the daylight shrinks to 9 hours, marking the shortest days of the year. This clear trend highlights not only the vibrant transitions of spring and summer but also the retreat into the quieter, darker days of winter, offering a beautiful backdrop to the seasonal changes in Shimoda.
In December, the winds in Shimoda, Japan, shift to a crisp average of 8.2 m/s (18 mph), showcasing a notable uptick compared to the calmer summer months. This increase in wind speed mirrors the trend seen in the preceding months, where November recorded an average of 6.9 m/s (15 mph). As the year draws to a close, Shimoda's winds become more pronounced, inviting a refreshing chill that heralds the onset of winter. This transition from the gentle breezes of summer, which hovered around 4.3 to 6.0 m/s, creates an invigorating atmosphere ideal for winter activities and coastal adventures. The consistent pattern of rising wind speeds throughout late fall into the winter season reflects nature's rhythm, offering both locals and visitors a reenergizing experience by the sea.
Weather in Shimoda varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Shimoda, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures in Shimoda range from a minimum of 3°C (38°F) to a maximum of 21°C (69°F), with an average temperature of 11°C (53°F). The month experiences considerable precipitation, totaling 88 mm (3.5 in) over approximately 10 days, with a humidity level of 78%. In comparison, January sees slightly cooler temperatures, with a minimum of 1°C (34°F), an average of 9°C (48°F), and a maximum of 17°C (63°F). Precipitation decreases to 78 mm (3.1 in), occurring over 7 days, and humidity drops slightly to 76%. For more details, visit Shimoda weather in January.
December and February exhibit somewhat similar weather patterns, though there are notable differences. In December, temperatures range from a minimum of 3°C (38°F) to a maximum of 21°C (69°F), with an average of 11°C (53°F). The month sees about 88 mm (3.5 in) of precipitation over approximately 10 days, coupled with a humidity level of 78%. In contrast, February experiences slightly cooler temperatures, with a minimum of 2°C (37°F) and a maximum of 18°C (65°F), averaging 9°C (48°F). The precipitation in February is comparable at 90 mm (3.5 in) but occurs over just 8 days, and the humidity drops to 74%. For a more detailed look at February weather, you can check Shimoda weather in February.
In December, the weather is relatively mild with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 21°C (69°F), averaging around 11°C (53°F). The month sees about 88 mm (3.5 in) of precipitation over roughly 10 days, accompanied by a high humidity level of 78%. In contrast, March offers slightly warmer conditions, with temperatures starting at a minimum of 5°C (41°F) and peaking at 18°C (65°F), averaging 12°C (53°F). However, March experiences significantly more rainfall, totaling 203 mm (8.0 in) over 14 days, with a lower humidity level of 70% compared to December. For those interested in more detailed weather patterns, you can explore Shimoda weather in March.
December weather features cooler temperatures, with a minimum of 3°C (38°F) and an average of 11°C (53°F), while temperatures often reach a maximum of 21°C (69°F). It is relatively damp, with 88 mm (3.5 in) of precipitation spread over 10 days and a humidity level of 78%. In contrast, April brings slightly warmer conditions, with minimums of 6°C (44°F) and an average of 15°C (58°F), while still reaching a maximum of 21°C (70°F). However, it experiences more rainfall, totaling 175 mm (6.9 in) over the same number of days. Despite having lower humidity at 74%, April's weather is notably wetter than that of December. For more details on April conditions, you can refer to Shimoda weather in April.
In December, the weather typically ranges from a chilly minimum of 3°C (38°F) to a comfortable maximum of 21°C (69°F), with an average temperature of around 11°C (53°F). The month sees an average of 88 mm (3.5 in) of precipitation over about 10 days, and humidity levels hover around 78%. In contrast, May brings warmer temperatures with a minimum of 13°C (55°F) and a maximum of 23°C (74°F), resulting in a pleasant average of 18°C (65°F). However, May is significantly wetter, with precipitation reaching 222 mm (8.7 in) across 11 days and slightly higher humidity at 81%. For more details on the weather conditions in May, you can check Shimoda weather in May.
In December, temperatures range from a cool 3°C (38°F) at night to a mild 21°C (69°F) during the day, with an average of 11°C (53°F). The month experiences significant rainfall, with 88 mm (3.5 in) over about 10 days, and the humidity is relatively high at 78%.
In contrast, June brings warmer temperatures, with minimums around 17°C (62°F) and daytime highs reaching up to 25°C (78°F), averaging 21°C (70°F). However, this month is considerably wetter, receiving 300 mm (11.8 in) of rain spread over approximately 15 days, accompanied by slightly higher humidity at 88%.
For more specifics about June weather, you can check out Shimoda weather in June.
December and July present contrasting weather patterns. In December, temperatures range from a cool minimum of 3°C (38°F) to a comfortable maximum of 21°C (69°F), with an average of 11°C (53°F). This month experiences moderate precipitation, totaling 88 mm (3.5 in) over approximately 10 days, and the humidity sits at 78%. In stark contrast, July offers much warmer temperatures, with lows around 20°C (68°F) and highs reaching up to 30°C (87°F), averaging 25°C (77°F). However, July is also marked by significantly higher rainfall, accumulating 360 mm (14.2 in) over 18 days and a humidity level of 93%. For a detailed overview of July weather, you can refer to Shimoda weather in July.
December and August present strikingly different weather patterns. In December, temperatures range from a chilly minimum of 3°C (38°F) to a comfortable average of 11°C (53°F), occasionally peaking at 21°C (69°F). The month sees about 88 mm (3.5 in) of precipitation spread over 10 days, accompanied by relatively high humidity at 78%. In stark contrast, August boasts significantly warmer conditions, with temperatures starting at a minimum of 22°C (71°F) and averaging 26°C (80°F), reaching a maximum of 30°C (87°F). Precipitation also increases during this month, totaling 183 mm (7.2 in) over 15 days, alongside higher humidity levels at 90%. For a more detailed look at August weather specifically, you can visit Shimoda weather in August.
December and September present contrasting weather patterns, highlighting the transition from the warmth of late summer to the cooler winter months. In December, average temperatures range from a minimum of 3°C (38°F) to a maximum of 21°C (69°F), with a mild average of 11°C (53°F). The month experiences around 88 mm (3.5 in) of precipitation over about 10 days, accompanied by a humidity level of 78%. In contrast, September is warmer, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 29°C (84°F) and an average of 24°C (76°F). This month is also significantly wetter, receiving 254 mm (10.0 in) of rain over approximately 19 days, with a higher humidity level of 86%. For more details on September weather, visit Shimoda weather in September.
When comparing the weather in December to October, it's clear that October is generally warmer and wetter. In October, temperatures range from a minimum of 14°C (57°F) to a maximum of 26°C (79°F), with an average temperature of 20°C (69°F). In contrast, December's temperatures are much cooler, with a range from a minimum of 3°C (38°F) to a maximum of 21°C (69°F), averaging at 11°C (53°F). Additionally, October experiences significantly more rainfall, with 305 mm (12.0 in) over 16 days, while December sees only 88 mm (3.5 in) spread across 10 days. Overall, October retains a higher humidity at 83% compared to December's 78%. For more specific details on Shimoda’s climate during this time, check out Shimoda weather in October.
In November, the weather tends to be milder with an average temperature of 16°C (61°F), alongside higher maximum temperatures reaching 22°C (72°F). However, it experiences more precipitation, totaling 144 mm (5.7 in) over 12 days, with humidity slightly higher at 80%. In contrast, December sees a drop in both minimum and average temperatures, with values ranging from a minimum of 3°C (38°F) to an average of 11°C (53°F) and a maximum of 21°C (69°F). While it also experiences rainfall, totaling 88 mm (3.5 in) across 10 days, the humidity remains relatively stable at 78%. For more detailed information on November's weather patterns, check Shimoda weather in November.
As December descends upon Shimoda, the weather presents a captivating transition from the milder conditions of previous months. With cooler temperatures and increased humidity, the air carries a brisk freshness, often punctuated by the gentle rhythm of rainfall over ten days. The average chill in the air sets a cozy tone for the holiday season, inviting locals and visitors alike to enjoy the beauty of winter's embrace. For those curious about Shimoda's unique climate patterns throughout the year, you can explore more details in the comprehensive guide here: Shimoda Climate.