Last updated: August 21, 2025
In December, Setouchi, Japan experiences a distinct winter charm characterized by a maximum temperature of 19°C (66°F) and a cool average of 9°C (48°F). With temperatures occasionally dipping to a minimum of 1°C (33°F), the air is crisp, fostering a cozy atmosphere. This month, the region receives about 52 mm (2.0 in) of precipitation over six days, contributing to a humidity level of 82% that enhances the tranquil beauty of the landscape. Embrace the serene winter vibes as Setouchi wraps itself in a gentle embrace of seasonal change.
As December settles in Setouchi, Japan, the temperatures begin to reflect the transition to winter, with minimums dropping to 1°C (33°F) and averages hovering around 9°C (48°F). This month marks a notable shift from the more moderate fall temps, as maximums peak at 19°C (66°F), offering a mild contrast to the chill of the season. The region's climate displays a gradual cooling trend, with December ushering in a sharper decline from the comfortable averages of previous months. As the year draws to a close, visitors can expect a crisp atmosphere ideal for enjoying local highlights while cozying up against the serene backdrop of winter in Setouchi.
December in Setouchi, Japan, marks a notable transition as the region experiences a modest precipitation amount of 52 mm (2.0 in) across approximately 6 days of rainfall. This is a slight increase compared to November’s meager 38 mm, suggesting a gradual shift as winter sets in. While December's precipitation is significantly lower than the peak months of July and June, which boast 303 mm (11.9 in) and 164 mm (6.5 in) respectively, it reflects a return to more stable conditions after the autumn deluges. The relatively low number of precipitation days reinforces the trend towards fewer rain events as the year draws to a close, paving the way for the drier months ahead.
In Setouchi, Japan, December welcomes a humidity level of 82%, reflecting a trend of elevated moisture that characterizes the region as winter approaches. Throughout the year, humidity fluctuates, peaking at an intense 92% during the summer months of July and August, which showcases the sweltering heat that often envelops the area. As the year progresses into the cooler months, values gradually decline, yet December maintains a relatively high humidity consistent with the preceding months of November (84%) and October (85%). This slight stability in December hints at the lingering warmth of the season, as the moisture-rich air continues to envelop Setouchi, making it a unique climate throughout the year.
In December, Setouchi, Japan, experiences a UV Index of 4, placing it in the moderate exposure category. This signifies a reduction in solar radiation compared to the peak summer months, where the UV Index hits extreme levels of 11 or higher. With a recommended burn time of 30 minutes, residents and visitors alike can enjoy outdoor activities with a lesser risk of overexposure. The transition through the year showcases a clear trend: as temperatures rise from winter to summer, the UV Index escalates dramatically, peaking in July at 12 and then gradually tapering off into the more moderate readings of late autumn and winter. For a comprehensive look at the UV Index across the seasons, check out Setouchi UV Index.
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In Setouchi, Japan, December welcomes a gentle decline in sunshine hours, averaging 213 hours for the month. This marks a gradual tapering from the peak of 306 hours in August, reflecting the region's shift from the vibrant summer to the serene winter months. As the year winds down, sunlight provides a soft illumination, transitioning from the exuberant brightness of spring, which boasts over 280 hours in April and 295 hours in May, to a more subdued glow. Nonetheless, even in December, the sun still graces the landscape with a generous amount of light, reminding us that even during the cooler months, Setouchi remains a beautiful haven for those seeking to bask in the calm of winter sunshine.
In Setouchi, Japan, the likelihood of sunny weather in December shows promising signs with a 59% chance of sunshine, making it one of the brighter months of the year. This marks a noticeable increase compared to the preceding months, particularly following the 56% chance in November and a dip from earlier months like April and May. The trend suggests that as the year draws to a close, residents and visitors alike can expect more favorable weather conditions, bringing a welcome touch of brightness during the winter season. With December standing out as one of the sunniest winter months, it provides an ideal backdrop for enjoying the region’s scenic beauty.
As the year draws to a close in Setouchi, Japan, the daylight duration begins to wane dramatically, with December offering just 9 hours of daylight. This decline sets the stage for a notable trend observed throughout the year: longer days emerge as early as March, peaking at 14 hours during the summer months of June and July. Following this peak, daylight gradually recedes, creating a rhythmic cycle that reflects the changing seasons. By November, daylight is down to 10 hours, creating a stark contrast to the bright, vibrant days of April and May when sunlight lingers for 13 hours. This cyclical variation not only marks the passage of time but also beautifully illustrates the essence of seasonal transitions in this picturesque region of Japan.
As December unfolds in Setouchi, Japan, the average wind speed picks up, reaching 5.1 m/s (11 mph), a refreshing breath of air as the year draws to a close. This increase contrasts with the relatively calmer summer months, where winds dipped to 2.9 m/s (6 mph) in July. Notably, the transition from autumn to winter showcases a notable shift; November, with its 4.3 m/s (10 mph) winds, sets the stage for December's invigorating gusts. Throughout the year, the wind speeds display an interesting trend, with the strongest breezes occurring late in the year, making December a dynamic time in Setouchi’s serene coastal landscape.
Weather in Setouchi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Setouchi, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather is milder with temperatures ranging from a minimum of 1°C (33°F) to a maximum of 19°C (66°F), while January sees cooler temperatures dropping to a minimum of -2°C (29°F) and a maximum of 14°C (57°F). Both months experience similar levels of humidity at 82%, but December has slightly higher precipitation totals of 52 mm (2.0 in) over 6 days compared to January's 39 mm (1.5 in) across 5 days. For more details on what to expect during January, check out Setouchi weather in January.
December and February showcase distinct weather patterns, with December generally being milder. In December, temperatures range from a minimum of 1°C (33°F) to a maximum of 19°C (66°F), with an average of 9°C (48°F). The month experiences about 52 mm (2.0 in) of precipitation over six days, coupled with relatively high humidity at 82%. In contrast, February is cooler, with temperatures dipping as low as -3°C (28°F) and reaching a maximum of 15°C (60°F), averaging 6°C (43°F). This month records slightly higher precipitation at 55 mm (2.2 in), also over six days, but with a marginally lower humidity of 79%. For more detailed insights on February weather, you can check Setouchi weather in February.
In December, temperatures typically range from a chilly 1°C (33°F) to a mild 19°C (66°F), with an average of 9°C (48°F). The month sees about 52 mm (2.0 in) of precipitation over six days, accompanied by high humidity levels of 82%. In contrast, March experiences slightly warmer temperatures, with a minimum of 3°C (37°F) and a maximum of 18°C (64°F), maintaining an average of 9°C (49°F). However, March is wetter, receiving 108 mm (4.2 in) of rainfall across approximately ten days and lower humidity at 73%. For more information, you can check Setouchi weather in March.
In December, the weather is generally cooler, with temperatures ranging from a minimum of 1°C (33°F) to a maximum of 19°C (66°F), and an average temperature of 9°C (48°F). The month sees approximately 52 mm (2.0 in) of precipitation over about 6 days, coupled with relatively high humidity at 82%.
In contrast, April experiences milder conditions, featuring a minimum temperature of 4°C (40°F) and a maximum of 21°C (71°F), with an average temperature rising to 13°C (56°F). However, April also brings more rain, totaling around 130 mm (5.1 in) across 9 days, while the humidity is noticeably lower at 74%. This shift signifies a transition into spring, where temperatures increase and rainfall becomes more frequent. For more details on April weather in the region, you can check Setouchi weather in April.
December and May present contrasting weather patterns. In December, temperatures range from a chilly 1°C (33°F) at night to a mild 19°C (66°F) during the day, with an average of 9°C (48°F). The precipitation level is relatively low at 52 mm (2.0 in), occurring over about 6 days, accompanied by a humidity level of 82%. In stark contrast, May experiences warmer temperatures, with nighttime lows around 10°C (50°F) and highs peaking at 25°C (77°F), averaging 18°C (65°F). However, May also sees a significant increase in rainfall, accumulating 131 mm (5.2 in) over 9 days, and a slightly higher humidity of 84%. This makes December a cooler, drier month while May is notably warmer and wetter. For more detailed insights, you can visit Setouchi weather in May.
December and June present contrasting weather conditions. In December, temperatures range from a chilly 1°C (33°F) at night to a mild 19°C (66°F) during the day, with an average of 9°C (48°F). The month tends to be relatively dry, receiving about 52 mm (2.0 in) of precipitation over 6 days, while humidity remains around 82%. In contrast, June offers warmer temperatures, with nighttime lows of 15°C (59°F) and daytime highs reaching 27°C (80°F), averaging 22°C (71°F). Rain is more frequent during this month, with 164 mm (6.5 in) of precipitation across 12 days and a slightly higher humidity at 86%. For more details, check Setouchi weather in June.
In December, temperatures are much cooler, ranging from a minimum of 1°C (33°F) to a maximum of 19°C (66°F), with an average of 9°C (48°F). The month experiences relatively mild precipitation, totaling 52 mm (2.0 in) over approximately six days, accompanied by a humidity level of 82%. In contrast, July brings significantly warmer weather, with temperatures soaring from a minimum of 20°C (69°F) to a maximum of 32°C (91°F), and an average of 26°C (78°F). July is also much wetter, receiving a substantial 303 mm (11.9 in) of rain across about 16 days, alongside higher humidity at 92%. For more detailed insights on weather during this month, check Setouchi weather in July.
December and August showcase a stark contrast in weather conditions. December experiences cooler temperatures, ranging from a minimum of 1°C (33°F) to a maximum of 19°C (66°F), with an average temperature of 9°C (48°F). The month sees about 52 mm (2.0 in) of precipitation over six days and maintains a humidity level of 82%. In contrast, August brings warm temperatures with a minimum of 21°C (69°F) and a maximum of 32°C (91°F), averaging around 28°C (82°F). This summer month is considerably wetter, with precipitation totaling 173 mm (6.8 in) across twelve days and a slightly higher humidity level of 92%. For more details on August weather specifics, you can visit Setouchi weather in August.
December and September present a stark contrast in weather patterns. December temperatures range from a chilly 1°C (33°F) to a milder 19°C (66°F), with an average of 9°C (48°F). In comparison, September enjoys much warmer conditions, with temperatures fluctuating between 17°C (64°F) and 31°C (89°F), averaging at 24°C (76°F). Precipitation is also significantly higher in September, reaching 222 mm (8.7 in) over 13 days, while December sees only 52 mm (2.0 in) across just 6 days. Humidity levels are slightly higher in September at 87%, compared to 82% in December. For more details about the weather in September, check out Setouchi weather in September.
In comparing the weather of December and October, notable differences emerge. December experiences a noticeably cooler temperature range, with minimums dropping to 1°C (33°F) and an average of 9°C (48°F), while October maintains milder conditions with minimums around 12°C (54°F) and an average of 19°C (67°F). Additionally, October is marked by significantly higher precipitation, totaling 211 mm (8.3 in) over 11 days compared to December's lighter 52 mm (2.0 in) over just 6 days. Humidity levels are similar in both months, hovering around 82% in December and slightly higher at 85% in October. For more detailed insights into October’s climatic conditions, refer to Setouchi weather in October.
In comparing the weather of November and December, November tends to be milder, with average temperatures ranging from a minimum of 6°C (43°F) to a maximum of 22°C (71°F), while December experiences cooler conditions, with temperatures ranging from a minimum of 1°C (33°F) to a maximum of 19°C (66°F). Additionally, November sees slightly less precipitation, accumulating about 38 mm (1.5 in) over 5 days compared to December's 52 mm (2.0 in) spread across 6 days. Humidity levels are also quite similar, standing at 84% in November and 82% in December. For more details about the weather in November, you can visit Setouchi weather in November.
As December arrives in Setouchi, the weather begins to shift noticeably from the milder autumn months. The temperatures cool down, with crisp air replacing the warmth of previous weeks, bringing a refreshing change perfect for those who enjoy the brisk chill of early winter. While precipitation occurs on just a few days, the overall humidity remains high, lending a unique character to the season. This month marks the transition to winter, offering a beautiful contrast to the vibrant colors of fall, making it an ideal time for cozy indoor activities or exploring the serene landscapes. For those looking to understand more about the seasonal variations, detailed insights can be found at Setouchi Climate.