Last updated: August 21, 2025
In Nagasaki, Japan, December brings a delightful variety of weather experiences. With a maximum temperature peaking at 22°C (71°F) and an average of 10°C (51°F), the month showcases a mild climate perfect for exploring this historic city. However, temperatures can dip as low as 2°C (36°F), particularly during cooler nights. Expect 92 mm (3.6 in) of precipitation over roughly 8 days, keeping the atmosphere fresh and vibrant. The average humidity stands at 72%, contributing to a crisp yet comfortable feel in the air, making December an intriguing time to visit Nagasaki.
In December, Nagasaki transitions into cooler temperatures that mark the heart of winter. With minimums dropping to 2°C (36°F) and average highs reaching a comfortable 10°C (51°F), residents and visitors alike can expect a brisk yet inviting climate. As the month progresses, daytime temperatures can climb as high as 22°C (71°F), showcasing a notable warmth compared to the chill of early mornings and evenings. This shift embodies the city's mild winter characteristics, where even in the coldest months, the weather remains relatively temperate, encouraging exploration of Nagasaki's beautiful winter scenery and festive attractions.
In December, Nagasaki experiences a moderate precipitation level of 92 mm (3.6 in), falling over approximately 8 days. This marks a slight increase from the previous month, November, which had 81 mm (3.2 in) but also saw more rainy days. As winter approaches, December's precipitation is relatively low compared to the summer months, where rainfall peaks significantly, particularly in July at 442 mm (17.4 in). Overall, the trend reveals a gradual decrease in precipitation from the heavy summer rainfalls to the dryer winter months, making December a transitional period in Nagasaki’s climate.
In Nagasaki, Japan, December brings a slight dip in humidity to 72%, a welcome relief after the sweltering summer months where humidity peaked at a staggering 97% in July. As the year winds down, the trend shows a gradual decline from the lush, moisture-laden air of June and July, down to the more crisp and manageable levels seen in the colder months. Following the lush greenery of May with its high humidity of 87%, the air begins to dry slightly, leading into the winter season. This shift creates a refreshing atmosphere, contrasting sharply with the heavy humidity of mid-summer, making December a more comfortable time to enjoy the unique beauty of Nagasaki.
In Nagasaki, Japan, the UV Index in December typically sits at a moderate 4, allowing for a more relaxed approach to sun exposure with a burn time of about 30 minutes. This represents a notable decrease from the extreme levels witnessed from April through August, where the UV Index soared to 11 and 12. Comparatively, December offers a reprieve from the intense sun, echoing the lower indices observed in January. As winter sets in, it’s essential to remain mindful of skin protection, even when the UV levels are less intimidating. For detailed insights into the UV Index trends throughout the year, check out Nagasaki UV Index.
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In Nagasaki, Japan, December brings a gentle descent into the shorter days of winter, featuring approximately 190 hours of sunshine. This marks a notable decline from the sun-soaked heights of August, which boasts a radiant 302 hours of sunlight. As the year transitions into winter, the trend of diminishing daylight becomes apparent, following the spring months of flourishing sunshine, with peaks in March and April at 261 and 282 hours respectively. Despite the reduction, December’s sunlight still offers a warming touch amidst the chill, reminding residents and visitors alike of the city's beautiful interplay between light and season, as the vibrant energy of summer slowly gives way to the serene tranquility of winter.
In Nagasaki, Japan, the likelihood of sunny weather in December stands at 41%, reflecting a moderate chance of clear skies as the year draws to a close. While this figure is lower than the sunnier months of October and November, it still offers a reasonable opportunity for pleasant weather compared to the summer months, where the chances plummet to around 20-30% due to the humidity and rain. Overall, December's weather tends to be more stable, hinting at a transition from the vibrant autumn hues to the subdued tones of winter, making it a charming time to explore the city under the cool, crisp air.
In Nagasaki, Japan, the daylight duration exhibits a captivating rhythm throughout the year. Beginning in December, the city experiences about 10 hours of daylight, a figure that mirrors the preceding and following months of November and January. As the seasons transition toward spring, daylight steadily increases, peaking in the vibrant months of June and July with an impressive 14 hours of sunlight. This gradual shift from 10 to 14 hours reflects a natural progression that energizes the city with the warmth of summer. As autumn draws near, daylight gently wanes, retreating to 10 hours by November, creating a seasonal cycle that resonates with Nagasaki's rich cultural and natural heritage.
As December arrives in Nagasaki, Japan, the winds begin to pick up slightly, with an average speed of 4.9 m/s (11 mph). This marks a notable increase from the calmer breezes of the summer months, where wind speeds dipped to their lowest at 2.7 m/s (6 mph) in June. As the year closes, December showcases a shift towards moderate winds, reminiscent of the earlier months, particularly November, which recorded 4.5 m/s (10 mph). The transition into winter sees the winds steadily rising from 3.5 m/s (8 mph) in July to the more invigorating December gusts, creating a refreshing atmosphere that speaks to the changing seasons and invites locals and visitors alike to embrace the beauty of Nagasaki's winter landscape.
Weather in Nagasaki varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Nagasaki, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January present a notable transition in weather conditions. In December, temperatures range from a minimum of 2°C (36°F) to a maximum of 22°C (71°F), with an average of 10°C (51°F). This month experiences a significant amount of precipitation at 92 mm (3.6 in) over 8 days, accompanied by a humidity level of 72%. In contrast, January sees a slight drop in temperatures, with minimums reaching 0°C (32°F) and maximums capped at 18°C (65°F), averaging around 8°C (47°F). The precipitation decreases to 61 mm (2.4 in) over the same number of days, and humidity increases slightly to 73%. For more details on the January climate, you can check Nagasaki weather in January.
In December, the weather typically sees a minimum temperature of 2°C (36°F) and averages around 10°C (51°F), with a maximum reaching 22°C (71°F). The month experiences about 92 mm (3.6 in) of precipitation over 8 days, accompanied by a humidity level of 72%. In contrast, February tends to be a bit cooler, with a minimum of 0°C (33°F) and an average temperature of 9°C (48°F), peaking at 17°C (63°F). Precipitation increases slightly to 106 mm (4.2 in) over 10 days, while humidity decreases marginally to 69%. For more details on February's conditions, check out Nagasaki weather in February.
In December, temperatures range from a cool 2°C (36°F) at night to a pleasant average of 10°C (51°F) during the day, with highs reaching up to 22°C (71°F). This month experiences relatively lower precipitation, totaling 92 mm (3.6 in) over about 8 days, with humidity at 72%. In contrast, March sees slightly warmer temperatures with minimums of 5°C (41°F), an average of 12°C (54°F), and maximums around 20°C (68°F). However, it also brings increased rainfall, accumulating 157 mm (6.2 in) across approximately 12 days, while humidity remains consistent at 71%. For a more detailed look at March weather, you can check Nagasaki weather in March.
In comparing the weather between December and April, we see a notable shift in temperatures and conditions. December features cooler temperatures, with a minimum of 2°C (36°F) and an average of 10°C (51°F), while April enjoys milder weather, with a minimum around 7°C (46°F) and an average of 15°C (60°F). Precipitation levels are also higher in April, totaling 143 mm (5.6 in) over 9 days compared to December’s 92 mm (3.6 in) over 8 days. Furthermore, April boasts a slightly higher humidity level of 79% compared to December’s 72%. For more detailed insights into April weather specifically, you can visit Nagasaki weather in April.
December and May present distinct contrasts in weather patterns. In December, temperatures fluctuate between a minimum of 2°C (36°F) and a maximum of 22°C (71°F), with an average around 10°C (51°F). The month sees about 92 mm (3.6 in) of precipitation over approximately 8 days, coupled with a humidity level of 72%. In contrast, May offers warmer conditions, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 25°C (77°F), averaging 19°C (67°F). However, this comes with increased rainfall, totaling 229 mm (9.0 in) spread over 11 days, and a higher humidity of 87%. For a closer look at May's climatic conditions, you can refer to Nagasaki weather in May.
December and June present stark contrasts in weather. In December, temperatures range from a minimum of 2°C (36°F) to a maximum of 22°C (71°F), with an average of 10°C (51°F). The month brings 92 mm (3.6 in) of precipitation over about 8 days, and the humidity sits at 72%. In comparison, June boasts much warmer temperatures, with a minimum of 18°C (64°F) and a maximum of 27°C (81°F), averaging at 22°C (73°F). However, June is considerably wetter, receiving 272 mm (10.7 in) of rain over approximately 14 days and higher humidity levels at 91%. For more details on specific weather patterns, check out Nagasaki weather in June.
December and July present stark contrasts in weather. In December, temperatures range from a cool 2°C (36°F) to a pleasant average of 10°C (51°F), with a maximum reaching 22°C (71°F). This month sees relatively moderate precipitation of 92 mm (3.6 in) over 8 days, resulting in a humidity level of 72%. In contrast, July boasts significantly warmer conditions, with temperatures starting at a minimum of 21°C (70°F) and averaging 26°C (79°F), peaking at 32°C (89°F). However, July is also characterized by much heavier rainfall, totaling 442 mm (17.4 in) over 18 days, and a high humidity of 97%. For more details on July weather, visit Nagasaki weather in July.
When comparing the weather in December and August, a stark contrast emerges. December features milder temperatures, with a minimum of 2°C (36°F) and an average of 10°C (51°F), while August boasts significantly warmer conditions, with temperatures ranging from a minimum of 21°C (69°F) to an average of 28°C (82°F) and a high of 33°C (93°F). Precipitation also varies greatly between the two months; December sees about 92 mm (3.6 in) over 8 days, whereas August experiences much heavier rainfall totaling 326 mm (12.8 in) across 14 days. Additionally, humidity is notably higher in August at 94%, compared to December’s 72%. For more details, you can check Nagasaki weather in August.
December and September present contrasting weather patterns. In December, temperatures range from a chilly minimum of 2°C (36°F) to a pleasant maximum of 22°C (71°F), with an average of 10°C (51°F). This month experiences a total precipitation of 92 mm (3.6 in) over about 8 days, with humidity levels at 72%. In stark contrast, September boasts warmer temperatures, with a minimum of 19°C (66°F), an average of 25°C (77°F), and a high of 32°C (90°F). Additionally, September is much wetter, receiving 225 mm (8.9 in) of rainfall over 14 days, accompanied by higher humidity at 84%. For more details, you can check the Nagasaki weather in September.
The weather in December is generally cooler than in October, with average temperatures ranging from a minimum of 2°C (36°F) to a maximum of 22°C (71°F). In contrast, October boasts milder conditions, with average temperatures between 14°C (57°F) and 28°C (83°F). While both months experience similar amounts of precipitation, December records about 92 mm (3.6 in) over 8 days, compared to October's 117 mm (4.6 in) also over 8 days. Additionally, October’s higher humidity of 79% exceeds December's 72%, contributing to a more humid atmosphere earlier in the fall. For more information, check out the details on Nagasaki weather in October.
December's weather is generally cooler than November's, with a noticeable drop in minimum temperatures from 8°C (46°F) in November to 2°C (36°F) in December. The average temperature also reflects this decrease, averaging 10°C (51°F) in December compared to November's 15°C (60°F). While December experiences slightly more precipitation at 92 mm (3.6 in) over 8 days, November's rainfall totals 81 mm (3.2 in) across 9 days. Humidity levels remain relatively stable, with December at 72% and November slightly higher at 75%. For a more detailed look at November's weather, you can check out Nagasaki weather in November.
As December settles over Nagasaki, the city's weather experiences a noticeable shift characterized by cooler temperatures and increased humidity. Unlike the milder months of autumn, residents and visitors can expect maximum temperatures around 22°C (71°F), with a cooler average of 10°C (51°F) and occasional dips to 2°C (36°F) at night. Precipitation is also more frequent, with 92 mm (3.6 in) of rain typically falling over about 8 days, making this month wetter than many others. The unique blend of cooler climates and lingering moisture adds a distinct charm to Nagasaki in winter, inviting you to explore its festive ambiance. For further insights on the city's weather patterns throughout the year, visit Nagasaki Climate.