Last updated: August 21, 2025
In December, Omihachiman, Japan experiences a diverse range of weather conditions, making it a unique time to visit. Daily temperatures fluctuate between a maximum of 21°C (70°F) and a chilly minimum of -5°C (24°F), presenting a vibrant yet crisp climate. The average temperature hovers around 7°C (44°F), creating a refreshing atmosphere ideal for winter exploration. With approximately 90 mm (3.6 in) of precipitation spread over 14 days, visitors can expect occasional rain, contributing to the region's lush winter scenery. Coupled with a high humidity level of 83%, the weather in December is characterized by a damp chill that complements the festive season beautifully.
In December, Omihachiman experiences a crisp transition into winter, with temperatures dipping to a minimum of -5°C (24°F) and averaging around 7°C (44°F). As the year draws to a close, daytime highs can reach up to 21°C (70°F), providing a mild contrast to the chill of the mornings and evenings. This month marks a noticeable shift from the lingering warmth of November, where temperatures were significantly higher. The cooler weather sets the stage for cozy gatherings and festive activities, making it an enchanting time to explore this picturesque region of Japan. As the landscapes transform, visitors can enjoy the serene beauty of Omihachiman, perfectly complementing the crisp air and seasonal charm.
December in Omihachiman, Japan, marks a transitional period as the year closes, with precipitation quantities averaging 90 mm (3.6 in) over 14 days. This month's rainfall, while significant, follows a pattern of diminishing precipitation, particularly after the summer months when July reaches a peak of 286 mm (11.3 in). The wettest season has clearly passed, as December's totals contrast sharply with November's notably lower 52 mm (2.0 in). As winter approaches, the frequency of rain decreases, yet December still shows resilience in weather patterns, maintaining a steady amount that helps sustain the region's lush landscapes.
As December rolls in, Omihachiman's humidity settles at a comfortable 83%, mirroring the levels observed in November. This slight stability in humidity comes after a gradual decline from the summer months, where July's peak of 93% marked the year’s zenith. The transition from the high humidity of summer into the cooler months reveals a notable pattern: humidity tends to decrease consistently from March onwards, dipping to its lowest point of 74% in that month before bouncing back into the 80s by late fall. As winter approaches, the air retains a touch of moisture, creating a crisp yet pleasant atmosphere for residents and visitors alike.
In December, Omihachiman experiences a moderate UV Index of 3, providing a welcome respite from the extreme levels seen during the peak summer months. With a burn time of 30 minutes, residents and visitors alike can enjoy outdoor activities while maintaining protection against UV exposure. This trend reflects a gradual decline from the extreme indices of 11 in the summer, transitioning through very high readings in the spring and fall. As the year ends, it's essential to remain mindful of UV exposure, even in cooler months. For further details on the UV forecast, visit Omihachiman UV Index.
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In December, Omihachiman enjoys a gentle retreat from the vibrant sunshine experienced in earlier months, tallying 211 hours of sunlight. This marks a subtle decline from the peak brightness of August, which boasts an impressive 292 hours. As the year winds down, the days shorten, leading to a gradual decrease in sunlight hours since the spring and summer months. Notably, the transition from May's peak sunshine of 282 hours begins a steady tapering that continues until February, where sunlight starts to gain momentum once again. Overall, December’s light offers a cozy, uplifting close to the year, hinting at the promise of longer days ahead.
In December, Omihachiman, Japan, enjoys a 44% chance of sunny weather, making it a notable month for clearer skies compared to the earlier part of winter. This likelihood shows a favorable trend from the preceding months, particularly as November boasts a higher 55% sunshine expectancy. As the year winds down, December's sunshine potential remains relatively consistent, falling slightly below October's 50% but significantly above the dreary summer months, which languish at below 30%. Overall, while clouds may linger, the chances for sunlight in December present an inviting glimpse of brightness amidst the chill of winter.
In Omihachiman, Japan, the transition from summer to winter highlights an intriguing pattern in daylight duration. Starting the year with 10 hours of daylight in both January and February, the length gradually increases, peaking at a delightful 14 hours during the vibrant months of May through July. As summer wanes, daylight begins to retreat, dipping to 13 hours in August and continuing its decline through the fall. By December, the days shorten significantly to just 9 hours, ushering in a quiet, reflective season. This cyclical rhythm of daylight not only marks the changing seasons but also influences the lifestyle and activities of those who call Omihachiman home.
In December, the wind in Omihachiman, Japan, picks up slightly, averaging a steady 3.0 m/s (7 mph), reminiscent of the earlier winter months. This shift contrasts with the gentle breezes experienced during the scorching summer, where wind speeds dropped to a mere 2.0 m/s (4 mph) in July. The autumn months show a gradual increase in wind strength, culminating in December's return to speeds akin to late winter and early spring. This cyclical pattern demonstrates the region's shifting dynamics, with the winter air bringing a refreshing briskness, setting the stage for the new year ahead.
Weather in Omihachiman varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Omihachiman, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures range from a minimum of -5°C (24°F) to a maximum of 21°C (70°F), with an average of 7°C (44°F). The month is characterized by significant precipitation, totaling 90 mm (3.6 in) over 14 days, along with high humidity levels at 83%. In contrast, January tends to be cooler, with temperatures dipping slightly lower, offering a minimum of -6°C (22°F) and a maximum of 15°C (60°F), resulting in an average temperature of 4°C (39°F). January also sees less rainfall, accumulating 71 mm (2.8 in) across 13 days and a slightly lower humidity of 82%. For a more detailed look at January's conditions, check out Omihachiman weather in January.
In December, temperatures generally range from a chilly -5°C (24°F) at night to a mild 21°C (70°F) during the day, with an average of 7°C (44°F). The month experiences about 90 mm (3.6 in) of precipitation over 14 days, paired with high humidity at 83%. In contrast, February is notably colder, with minimum temperatures dropping to -10°C (13°F) and an average of 4°C (40°F), while highs reach around 20°C (68°F). Precipitation in February totals 69 mm (2.7 in) across 12 days, and humidity levels decrease slightly to 79%. For more detailed information on weather during this month, visit Omihachiman weather in February.
In December, the weather exhibits a chillier demeanor, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 21°C (70°F) and an average of 7°C (44°F). Precipitation is notable, averaging about 90 mm (3.6 in) over 14 days, accompanied by a high humidity level of 83%. In contrast, March brings a slight warming trend with temperatures ranging from -1°C (30°F) to a maximum of 23°C (75°F), and an average of 9°C (48°F). Although March has a bit more precipitation at 125 mm (4.9 in) across 13 days, the humidity decreases to a more comfortable 74%. For a closer look at how the weather in March specifically affects Omihachiman, you can check out Omihachiman weather in March.
In December, the weather is generally colder, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 21°C (70°F) and an average of 7°C (44°F). The month sees significant humidity at 83% and receives about 90 mm (3.6 in) of precipitation over 14 days. In contrast, April brings milder conditions, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 27°C (80°F) and an average temperature of 13°C (56°F). Although it experiences slightly less humidity at 76%, April has more rainfall, totaling 142 mm (5.6 in) over 11 days. For more details, you can check out Omihachiman weather in April.
December and May present markedly different weather conditions. In December, temperatures range from a chilly -5°C (24°F) at night to a comfortable 21°C (70°F) during the day, with an average temperature of around 7°C (44°F). This month sees about 90 mm (3.6 in) of precipitation over 14 days, coupled with a high humidity level of 83%. In contrast, May boasts much warmer weather, with temperatures starting at a mild 6°C (43°F) and peaking at a hot 32°C (89°F), averaging 18°C (65°F). Precipitation increases to 143 mm (5.6 in) but occurs over just 11 days, maintaining the same humidity of 83%. For more detailed insights, you can view Omihachiman weather in May.
December and June showcase strikingly different weather patterns. In December, temperatures range from a chilly -5°C (24°F) at night to a mild 21°C (70°F) during the day, with an average temperature of 7°C (44°F). The month sees approximately 90 mm (3.6 in) of precipitation over 14 days, coupled with a high humidity level of 83%. In contrast, June experiences much warmer conditions, with minimum temperatures of 11°C (52°F) and maximums reaching up to 32°C (90°F), averaging around 22°C (71°F). Precipitation in June significantly increases to 166 mm (6.5 in) across 13 days, along with slightly higher humidity at 87%. The notable temperature and precipitation differences highlight the contrasting climates of December and June. For more details, you can check out Omihachiman weather in June.
In December, the weather is much colder with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 21°C (70°F), and an average of 7°C (44°F). This month experiences about 90 mm (3.6 in) of precipitation spread over 14 days, accompanied by high humidity at 83%. In stark contrast, July brings warm conditions with minimum temperatures around 19°C (66°F) and peaking at 36°C (98°F), resulting in an average of 26°C (79°F). July experiences significantly higher rainfall, totaling 286 mm (11.3 in) over 21 days, along with even higher humidity at 93%. For more detailed insights into July's weather patterns, visit Omihachiman weather in July.
The weather in December presents a stark contrast to that of August. In December, temperatures range from a chilly -5°C (24°F) to a mild 21°C (70°F), with an average of 7°C (44°F). The month sees about 90 mm (3.6 in) of precipitation over 14 days, accompanied by relatively high humidity at 83%. In contrast, August boasts much warmer conditions, with temperatures ranging from a minimum of 18°C (64°F) to a scorching maximum of 37°C (99°F) and an average of 28°C (82°F). August experiences more rainfall at 188 mm (7.4 in) spread over 15 days and slightly higher humidity levels at 91%. For more details on the weather specifics, check out Omihachiman weather in August.
In December, the weather is significantly cooler, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 21°C (70°F) and an average of 7°C (44°F). The month sees an average precipitation of 90 mm (3.6 in) spread over 14 days, while humidity sits at 83%. In contrast, September boasts much warmer conditions, with temperatures varying from a minimum of 14°C (57°F) to a high of 34°C (94°F) and an average of 23°C (74°F). However, it also experiences higher precipitation levels, totalling 165 mm (6.5 in) over 13 days and a slightly elevated humidity of 87%. For more details on the weather during September, you can check Omihachiman weather in September.
In comparing the weather between December and October, we observe significant differences in temperature and precipitation. December experiences much cooler temperatures with a minimum of -5°C (24°F) and a maximum of 21°C (70°F), while October has milder temperatures, ranging from a minimum of 8°C (46°F) to a maximum of 31°C (88°F). Additionally, October is notably wetter, with a total precipitation of 224 mm (8.8 in) over 13 days compared to December's 90 mm (3.6 in) over 14 days. Humidity levels are similar, with December at 83% and October at 85%. For more information on October weather, you can visit Omihachiman weather in October.
In comparing the weather between December and November, we see some notable differences. December experiences a marked drop in temperatures, with lows reaching -5°C (24°F), while November maintains milder conditions with a minimum temperature of 1°C (34°F). The average temperature in December is around 7°C (44°F), significantly cooler than November’s average of 12°C (54°F). Additionally, December sees more precipitation, totaling 90 mm (3.6 in) over 14 days, compared to November’s 52 mm (2.0 in) over just 7 days. Both months share the same humidity level of 83%, but the colder temperatures in December change the overall feel of the weather. For more detailed insights into November, you can check out Omihachiman weather in November.
As December approaches, Omihachiman embraces the season with a noticeable chill. Unlike the milder months that precede it, temperatures dip considerably, with chilly evenings dipping into freezing territory. Combined with an average humidity of 83%, the air feels damp and brisk. This month also witnesses increased precipitation, with about half of December days experiencing some rainfall, contributing to the town's winter ambiance. The shifts in weather make it essential to prepare for a cozy experience in Omihachiman, contrasting sharply with the warmth of autumn. For more insights into the region's climate, visit Omihachiman Climate.