Last updated: August 21, 2025
December in Atami, Japan presents a blend of cool temperatures and moderate rainfall, inviting visitors to experience the charm of winter by the sea. With maximum temperatures peaking at 21°C (69°F) and dipping to a brisk minimum of 0°C (32°F), the average temperature stabilizes around 9°C (49°F), offering a refreshing climate for outdoor exploration. The month sees approximately 74 mm (2.9 in) of precipitation spread across 8 days, contributing to the region's lush landscapes. Coupled with a humidity level of 78%, December in Atami is a season marked by crisp air and a vibrant atmosphere, perfect for those seeking a unique winter getaway.
In Atami, Japan, December brings a noticeable dip in temperatures as winter settles in. With minimums dropping to 0°C (32°F), the city experiences its coolest nights of the year. However, the average temperature hovers around a crisp 9°C (49°F), providing a refreshing chill that's typical for the season. As the days progress, temperatures can peak at 21°C (69°F), indicating that mild spells are still a possibility, especially during sunny afternoons. This transitional month marks a shift from the milder autumn months, setting the stage for a chilly winter while still offering some pleasant days for outdoor activities and enjoying the coastal scenery.
December in Atami, Japan, wraps up the year with a modest precipitation total of 74 mm (2.9 in), falling slightly short of November's 94 mm. This month experiences an average of 8 rainy days, indicating a shift towards drier conditions as the festive season approaches. The downward trend from the earlier months, particularly when compared to the heavy rains of July and June, highlights a seasonal transition where the weather calms. Nevertheless, December’s relatively light rainfall continues to contribute to Atami's scenic charm, ensuring a refreshing atmosphere as the year ends.
In December, Atami, Japan, experiences a humidity level of 78%, marking a slight decrease from the higher figures seen in the preceding months. The annual trend reveals peak humidity during the summer, particularly in July and August, when levels soar to an impressive 93% and 90%, respectively. As the year transitions into winter, humidity begins to ease; however, December remains relatively high compared to earlier months. The humidity dips notably in March, reaching its yearly low at 70%, before rising again in late spring. Overall, this pattern reflects the region's characteristic subtropical climate, where coastal influences contribute to persistent moisture throughout much of the year.
As the year wraps up, December in Atami, Japan presents a moderate UV Index of 4, similar to January’s levels, allowing for a safe and comfortable sun exposure with a burn time of 30 minutes. Following a seasonal trend, the months from March to August showcase escalating UV levels, peaking at 11-12 during the summer, where exposure becomes critically important. As autumn unfolds, UV levels gradually decline, with November and December offering more forgiving conditions. This pattern highlights the significant seasonal variations in sun intensity, making it essential to be mindful of sun safety year-round. For more details on UV exposure in Atami, check out the full report at Atami UV Index.
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December in Atami, Japan, offers a warm and inviting close to the year, with the city basking in 227 hours of sunshine. This month sees a slight dip from the peak of summer, where August shines brightest with 285 hours of sunlight, but December still outshines many earlier months, maintaining a cozy glow that's welcoming for visitors. The trend throughout the year shows a gradual ascent from the more subdued January, which only sees 189 hours of sunshine, climbing steadily to a summer peak before tapering off again in the cooler months. However, December's sunshine hours remain robust compared to the early winter months, highlighting Atami’s charm as a delightful winter getaway. As the year wraps up, this blend of warmth and light invites both locals and travelers to indulge in the beauty of Atami's winter landscape.
In December, Atami, Japan, enjoys an impressive 72% chance of sunny weather, marking a significant increase from the preceding months. This upward trend is particularly notable when compared to November's 62%, as well as contrasting sharply with the wetter summer months of June and July, where sunny days are less frequent, at 22% and 30% respectively. As the year comes to a close, the likelihood of clear skies not only boosts outdoor activities but also enhances the overall charm of this seaside destination during the festive season. Visitors can look forward to basking in sunlit landscapes, making December an attractive time to experience the beauty of Atami.
In Atami, Japan, daylight duration exhibits a distinct seasonal rhythm, peaking during the lush spring and summer months. Starting the year with 10 hours of daylight in both January and February, the days gradually lengthen, reaching a maximum of 14 hours from May through July. As the leaves begin to change in autumn, daylight slowly dwindles, settling to 12 hours in September and 11 hours in October. However, by December, residents experience a stark reduction, with daylight lasting only 9 hours. This pattern highlights the interplay between the seasons, inviting both locals and visitors to embrace the vibrant mid-year glow before retreating into the serene, shorter days of winter.
As December unfolds in Atami, Japan, the average wind speed reaches 3.3 m/s (7 mph), mirroring January's breezy embrace. This signals a gentle revival in wind activity after the calmer summer months, where winds dipped to their lowest at 2.0 m/s during both June and July. Interestingly, the transition from late fall to early winter shows a slight uptick, with November also presenting a 3.1 m/s average. The consistent wind patterns from late autumn into winter suggest a refreshing chill in the air, making December a captivating time to experience Atami's coastal beauty, where the sea breeze carries whispers of the season's change.
Weather in Atami varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Atami, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures range from a minimum of 0°C (32°F) to a maximum of 21°C (69°F), with an average temperature of 9°C (49°F). The month experiences 74 mm (2.9 in) of precipitation over about 8 days, accompanied by a humidity level of 78%. In contrast, January sees slightly cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 18°C (64°F), averaging 7°C (44°F). Precipitation decreases to 68 mm (2.7 in) over just 5 days, and the humidity is slightly lower at 76%. For more detailed information, visit Atami weather in January.
December and February present distinct yet similar weather patterns. In December, temperatures range from a minimum of 0°C (32°F) to a maximum of 21°C (69°F), with an average around 9°C (49°F). The month experiences about 74 mm (2.9 in) of precipitation over 8 days, accompanied by high humidity at 78%. In contrast, February sees slightly cooler conditions, with temperatures dipping to a minimum of -1°C (30°F) and reaching a maximum of 19°C (67°F), averaging 7°C (45°F). This month has a bit more precipitation at 83 mm (3.2 in) over the same number of rainy days, yet humidity decreases slightly to 74%. For a more detailed look at February weather, visit Atami weather in February.
In December, temperatures typically range from a chilly 0°C (32°F) at night to a comfortable 21°C (69°F) during the day, with an average of 9°C (49°F). The month sees about 74 mm (2.9 in) of rain over approximately 8 days, accompanied by a relatively high humidity level of 78%. In contrast, March experiences slightly milder conditions, with nighttime lows of 1°C (34°F) and daytime highs reaching 22°C (72°F), averaging around 11°C (51°F). However, it is a wetter month, with precipitation totaling 196 mm (7.7 in) spread across about 13 days, while the humidity decreases slightly to 70%. For more details on March weather specifically, you can check Atami weather in March.
In December, temperatures range from a chilly minimum of 0°C (32°F) to a maximum of 21°C (69°F), with an average temperature of 9°C (49°F). The month experiences moderate rainfall, with 74 mm (2.9 in) spread over about 8 days, accompanied by a relatively high humidity level of 78%.
In contrast, April brings milder weather, featuring a minimum temperature of 3°C (38°F) and a maximum of 24°C (76°F), resulting in an average of 14°C (57°F). However, this month sees significantly higher precipitation at 168 mm (6.6 in) over 11 days, while humidity remains somewhat lower at 74%. For a detailed look at the weather conditions in April, visit Atami weather in April.
December and May exhibit notable differences in weather conditions. In December, temperatures range from a chilly 0°C (32°F) at night to a comfortable 21°C (69°F) during the day, with an average of 9°C (49°F). The month experiences 74 mm (2.9 in) of precipitation over about 8 days, accompanied by a humidity level of 78%. In contrast, May brings warmer temperatures, starting from a minimum of 9°C (48°F) and peaking at 28°C (82°F), with an average of 18°C (65°F). However, it sees significantly more rainfall, with 194 mm (7.6 in) over approximately 12 days, and a humidity level slightly higher at 81%. For more details on May's weather, you can refer to Atami weather in May.
December and June exhibit stark contrasts in weather. In December, temperatures range from a chilly minimum of 0°C (32°F) to a milder maximum of 21°C (69°F), with an average of 9°C (49°F). The month is characterized by lower precipitation of 74 mm (2.9 in) over 8 days and a humidity level of 78%. In contrast, June sees a significant rise in temperatures, with a minimum of 15°C (59°F) and a maximum reaching up to 29°C (85°F), averaging at 21°C (71°F). This month is notably wetter, with precipitation totaling 263 mm (10.3 in) across 17 days, accompanied by higher humidity at 88%. For a closer look at what to expect, check out Atami weather in June.
December and July present strikingly different weather conditions. In December, temperatures range from a brisk 0°C (32°F) to a mild 21°C (69°F), with an average of 9°C (49°F). The month experiences 74 mm (2.9 in) of precipitation over approximately 8 days and has a humidity level of 78%. In contrast, July offers much warmer weather, with temperatures ranging from a minimum of 18°C (65°F) to a high of 33°C (92°F), averaging around 25°C (77°F). This month sees significantly more rainfall, totaling 326 mm (12.8 in) over 19 days and a higher humidity of 93%. For more detailed insights into July weather specifics, you can refer to Atami weather in July.
In December, the weather is notably cooler, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 21°C (69°F), and an average of 9°C (49°F). The month sees about 74 mm (2.9 in) of precipitation spread over 8 days, with humidity levels at 78%. In contrast, August showcases a much warmer climate, with temperatures ranging from 20°C (68°F) to a maximum of 34°C (94°F), averaging around 27°C (81°F). Rainfall is significantly higher during this month, totaling 176 mm (6.9 in) over 17 days, accompanied by higher humidity at 90%. For more specific information about August weather, you can visit Atami weather in August.
December and September present contrasting weather patterns. December experiences milder temperatures, with a minimum of 0°C (32°F) and a maximum of 21°C (69°F), averaging around 9°C (49°F). The month sees approximately 74 mm (2.9 in) of precipitation over 8 days, combined with a humidity level of 78%. In contrast, September is considerably warmer, featuring temperatures that range from a minimum of 15°C (60°F) to a maximum of 33°C (91°F), giving an average of 23°C (74°F). This month is notably wetter, with precipitation totaling 221 mm (8.7 in) spread over 20 days, and a higher humidity of 86%. For more detailed insights, you can visit Atami weather in September.
In comparing the weather between October and December, October tends to be warmer and significantly wetter. October features a temperature range with a minimum of 11°C (52°F) and an average high of 29°C (84°F), while December sees lower temperatures, with a minimum of 0°C (32°F) and an average high of 21°C (69°F). The precipitation in October is also notably higher, totaling 305 mm (12.0 in) over 16 days, compared to December's 74 mm (2.9 in) across just 8 days. Humidity levels are relatively high in both months, with December at 78% and October at 83%. For more details on October's weather, you can visit this link: Atami weather in October.
In comparing the weather between November and December, December experiences slightly cooler temperatures, with a minimum of 0°C (32°F) compared to November's minimum of 3°C (38°F). The average temperature also drops from 14°C (58°F) in November to 9°C (49°F) in December, though both months see a maximum temperature close to each other, at 22°C (72°F) in November and 21°C (69°F) in December. Precipitation levels decrease from 94 mm (3.7 in) over 10 days in November to 74 mm (2.9 in) over 8 days in December, indicating a slightly drier month. Humidity remains relatively high in both months, with December at 78% and November at 80%. For more details on November weather, check out Atami weather in November.
As December arrives in Atami, the weather takes on a cool character, distinguishing itself from the milder months preceding it. With temperatures dipping to an average of 9°C (49°F), the crisp air is accompanied by higher humidity levels, making the atmosphere feel even cooler. Precipitation increases slightly, with about eight rainy days contributing to a total of 74 mm, reflecting the transition towards winter. This shift creates a refreshing yet brisk environment, perfect for enjoying Atami's tranquil winter landscapes. For a deeper understanding of how December fits into the overall climate pattern, explore our detailed page on Atami Climate.