Last updated: August 21, 2025
December in Onomichi, Japan presents a unique blend of cool temperatures and a touch of winter charm. With a maximum temperature of 20°C (69°F) and an average of 8°C (46°F), the month transitions into chillier vibes, where the minimum can plunge to 0°C (32°F). Visitors can expect about 45 mm (1.8 in) of precipitation spread over 6 days, contributing to the region's lush scenery. The humidity hovers around 82%, adding an intriguing layer to the coastal atmosphere. This month offers a perfect opportunity to experience Onomichi’s serene beauty wrapped in mild winter weather.
In December, Onomichi, Japan, begins to transition into the chill of winter as temperatures cool from the previous month. With a minimum temperature of 0°C (32°F) and an average of 8°C (46°F), the air carries a crispness that hints at the season's change. Daytime highs can reach up to 20°C (69°F), still providing moments of mild warmth, especially in the early part of the month. This combination of cooler nights and moderate daytime temps creates a beautiful backdrop for festive activities and exploring the city’s scenic coastal views, making it a delightful time to visit before the true winter sets in. As the year draws to a close, Onomichi offers a harmonious blend of seasonal charm, inviting visitors to enjoy its serene atmosphere.
December in Onomichi, Japan, experiences a relatively mild amount of precipitation, totaling 45 mm (1.8 in) over an average of 6 days. This marks a slight uptick from November's meager 31 mm (1.2 in) despite having only two additional days of rainfall. As the year winds down, December reflects a shift from the wetter summer months, where heavy downpours can reach as high as 314 mm (12.4 in) in July. The transition to winter brings a noticeable reduction in precipitation, paving the way for drier and cooler conditions, but still maintaining a certain charm with its light rains that nourish the landscape, leaving Onomichi cloaked in a picturesque winter atmosphere.
As December rolls into Onomichi, Japan, the humidity settles at 82%, maintaining a slight dip from the peak summer months, which boast levels as high as 92% in July and August. This late-autumn transition sees humidity generally hovering in the low to mid-eighties, with May's 84% and November's 84% reflecting a consistent pattern of moisture. The winter months usher in a subtler softness in the air, noticeably lower than the preceding months, suggesting a reprieve from the sticky heat. Overall, the trend points toward a gradual decline in humidity as the year winds down, culminating in December's comfortable yet damp atmosphere, a signature of the region's climate.
In December, Onomichi, Japan experiences a moderate UV Index of 4, signaling a more subdued sun compared to the previous months. As winter sets in, sun exposure becomes less intense, with a recommended burn time of 30 minutes before protective measures are needed. This trend marks a welcome contrast to the extreme levels seen during the peak summer months, where values soared to 12 in July and August. From the high indexes in spring and summer, the gradual decline through autumn leads to a safer and more manageable UV environment in December. For more detailed insights on UV exposure levels throughout the year, visit Onomichi UV Index.
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As December unfolds in Onomichi, Japan, residents and visitors alike revel in the gentle warmth of sunshine, with the month boasting 221 hours of bright, golden light. This reflects a slight dip from November's 238 hours, signaling the gradual transition into winter. Throughout the year, Onomichi enjoys a delightful cycle of sunlight, peaking in May with an impressive 305 hours and reaching its nadir in January with 184 hours. The trend highlights a gradual increase in daylight as spring approaches, culminating in the vibrant summer months. In December, although sunlight hours are reduced, the lingering glow paints the landscape with enchanting hues, inviting a serene close to the year as the townsfolk bask in moments of tranquility before the new year dawns.
In December, Onomichi, Japan, enjoys a refreshing 61% chance of sunshine, making it one of the brighter months of the year. This is a noticeable increase from the preceding months, particularly compared to the drizzly days of June and July, which see a mere 24% and 26% chance of sun. As winter settles in, the likelihood of sunny days rises significantly, contrasting sharply with the overcast skies typical of late summer. Following November's respectable 55%, December stands out, hinting at a promising charm for those seeking to bask in the winter sun. Whether you’re planning a holiday stroll or simply yearning for a glimpse of clear skies, December’s weather offers a delightful reprieve, encouraging both locals and visitors to embrace the outdoors.
As the year winds down in Onomichi, Japan, December brings shorter days, with daylight lasting just 9 hours—a notable drop from the 10 hours observed in both January and February. This decline in daylight hours showcases the gradual transition into winter, following a peak during the summer months of June and July, which enjoy the longest stretches of daylight at a vibrant 14 hours. As spring emerges in March, the days start to lengthen again, but December serves as a gentle reminder of nature's cyclical rhythms, transitioning from the brightness of earlier months to the serene, quieter light of winter. Overall, the pattern showcases the shifting balance between light and dark, a beautiful reflection of the changing seasons.
As December settles in Onomichi, the average wind speed experiences a noticeable uptick, reaching 3.5 m/s (8 mph) - a refreshing breath of air as the year comes to a close. This slight increase marks a departure from the calmer breezes of the warmer months, notably dropping to just 2.0 m/s (4 mph) in June. Throughout the year, wind speeds have generally shown a subtle decline, with the summer months consistently maintaining 2.4 m/s (5 mph). However, the occasional winter winds remind us of nature's variability, bringing a brisk energy that enhances the scenic beauty of Onomichi during this time. Overall, December’s winds provide a spirited contrast to the year’s slower rhythms, inviting both locals and visitors to enjoy the invigorating atmosphere.
Weather in Onomichi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Onomichi, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January exhibit notable differences in weather patterns. In December, temperatures range from a minimum of 0°C (32°F) to a maximum of 20°C (69°F), with an average of 8°C (46°F). The month experiences approximately 45 mm (1.8 inches) of precipitation over six days, while humidity remains high at 82%. In contrast, January sees colder conditions, with temperatures dipping to a minimum of -5°C (24°F) and peaking at 15°C (59°F), averaging 6°C (43°F). Precipitation slightly decreases to 40 mm (1.6 inches) across five days, yet humidity remains steady at 82%. For more detailed information, check out Onomichi weather in January.
December and February in Onomichi present distinct weather characteristics despite similar maximum temperatures. December typically features a milder range with average temperatures around 8°C (46°F) and a comfortable humidity level of 82%. Precipitation is relatively low, with 45 mm (1.8 in) over about 6 days. In contrast, February experiences cooler mornings with a minimum temperature dropping to -3°C (26°F) and an average of 6°C (44°F). This month also sees slightly increased precipitation at 54 mm (2.1 in), while humidity remains lower at 79%. For those interested in more details, you can explore Onomichi weather in February.
In December, the weather features temperatures ranging from a minimum of 0°C (32°F) to a comfortable maximum of 20°C (69°F), with an average temperature of 8°C (46°F). The month sees about 45 mm (1.8 in) of precipitation over six days, accompanied by a relatively high humidity of 82%. Conversely, March presents a slight warming trend, with temperatures fluctuating from a minimum of 0°C (32°F) to a maximum of 23°C (73°F), and an average temperature of 10°C (51°F). However, March is also wetter, accumulating 93 mm (3.7 in) of precipitation over nine days, alongside a decrease in humidity to 73%. For more specific insights about weather trends in March, you can check Onomichi weather in March.
In December, the weather is quite cool, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 20°C (69°F), and an average temperature of 8°C (46°F). The month sees a moderate amount of precipitation, totaling 45 mm (1.8 in) over about 6 days, coupled with relatively high humidity at 82%. In contrast, April brings warmer temperatures, with a minimum of 2°C (36°F) and a maximum of 26°C (79°F), averaging 15°C (59°F). However, it is also wetter, with precipitation reaching 117 mm (4.6 in) across 8 days, and the humidity is slightly lower at 74%. For more details, you can check Onomichi weather in April.
December weather features cooler temperatures, with a minimum of 0°C (32°F) and an average of 8°C (46°F), peaking at 20°C (69°F). This month experiences relatively low precipitation of 45 mm (1.8 in) over about 6 days, with humidity sitting at 82%. In contrast, May brings much warmer conditions, starting at a minimum of 7°C (46°F) and averaging 20°C (68°F), reaching up to 31°C (89°F). However, it also sees increased rainfall, with 107 mm (4.2 in) over 9 days and a slightly higher humidity of 84%. The significant differences highlight May as a warmer and wetter month compared to the cooler, drier December. For a detailed look at the weather in May, check Onomichi weather in May.
In December, the weather tends to be quite cool, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 20°C (69°F). The average temperature sits at around 8°C (46°F), and the month experiences about 45 mm (1.8 in) of precipitation over six days, accompanied by a humidity level of 82%. In stark contrast, June brings warmer temperatures, with minimums of 13°C (56°F) and maximums reaching up to 32°C (90°F), averaging 23°C (74°F). This month is also much wetter, receiving approximately 149 mm (5.9 in) of rain over twelve days, and the humidity climbs slightly to 86%. For more specific details about weather conditions during this month, you can check Onomichi weather in June.
When comparing December and July weather, notable differences can be observed. December experiences cooler temperatures, with a minimum of 0°C (32°F) and an average of 8°C (46°F), while July boasts much warmer conditions, featuring a minimum of 19°C (66°F) and an average of 27°C (81°F). Precipitation also varies significantly; December receives 45 mm (1.8 in) over an average of 6 days, whereas July sees much heavier rainfall, totaling 314 mm (12.4 in) across 17 days. The humidity remains high in both months, with December at 82% and July slightly higher at 92%. For more detailed insights on July weather, you can check Onomichi weather in July.
December and August exhibit strikingly contrasting weather patterns. In December, temperatures range from a chilly minimum of 0°C (32°F) to a mild maximum of 20°C (69°F), with an average of 8°C (46°F). The month has relatively low precipitation, totaling 45 mm (1.8 in) over about 6 days, and a humidity level of 82%. In stark contrast, August brings sweltering heat, with temperatures ranging from a minimum of 20°C (68°F) to a scorching maximum of 37°C (99°F), averaging around 29°C (85°F). It is also the wettest month, experiencing 166 mm (6.5 in) of rain over 11 days, coupled with high humidity at 92%. These differences highlight the seasonal extremes, making December feel brisk and damp, while August is characterized by heat and humidity. For more details, you can check Onomichi weather in August.
December and September showcase contrasting weather patterns. In December, temperatures range from a chilly minimum of 0°C (32°F) to a mild maximum of 20°C (69°F), with an average temperature of 8°C (46°F). The month experiences relatively low precipitation of 45 mm (1.8 in) over just 6 days, and humidity stands at 82%. In stark contrast, September boasts much warmer temperatures, with a minimum of 14°C (58°F) and a maximum reaching 35°C (95°F), averaging around 25°C (77°F). However, it also sees significantly higher rainfall, totaling 174 mm (6.9 in) across 12 days, along with a slightly higher humidity level of 87%. For more detailed insights, you can visit Onomichi weather in September.
In comparing the weather between October and December, October presents a warmer climate with average temperatures around 19°C (67°F) and a maximum of 32°C (89°F), while December sees a drop in temperatures, averaging 8°C (46°F) with a maximum of 20°C (69°F). October is also characterized by significantly higher precipitation, totaling 164 mm (6.4 in) over 9 days, in contrast to December’s 45 mm (1.8 in) of rain over just 6 days. Despite slightly lower humidity levels in October at 85% compared to 82% in December, the overall feel is distinctly warmer and wetter in October. For more details on October weather, check out Onomichi weather in October.
December experiences slightly cooler temperatures than November, with minimums dropping to 0°C (32°F) compared to November's 1°C (35°F). The average temperature also decreases from 13°C (56°F) in November to 8°C (46°F) in December, while the maximum temperature in December is more restrained at 20°C (69°F), down from November's 24°C (75°F). In terms of precipitation, December receives a bit more at 45 mm (1.8 in) over 6 days, while November has 31 mm (1.2 in) spread over 4 days. Humidity remains relatively high in both months, with December at 82% and November slightly higher at 84%. For more detailed insights on the weather in November, you can check Onomichi weather in November.
As December rolls into Onomichi, the weather offers a distinct shift from the milder months preceding it. With average temperatures dipping to a cool 8°C (46°F) and a notable humidity level of 82%, the air feels brisk, inviting cozy layers and warm beverages. Unlike the wetter summer months, December sees a relatively low precipitation of 45 mm spread over about 6 days, making it a more pleasant time to explore the scenic beauty of the region. This unique blend of cool temperatures and manageable rainfall adds a special charm to the coastal city, encouraging visitors to embrace the serene atmosphere of winter. To better understand what to expect, check out the comprehensive details at Onomichi Climate.