Last updated: August 21, 2025
December in Ogasawara, Japan, presents a mild and humid climate, perfect for those seeking a warm getaway. With maximum temperatures reaching 26°C (78°F) and an average of 22°C (71°F), visitors are treated to pleasant weather ideal for outdoor exploration. The nights cool down to a minimum of 17°C (63°F), providing a comfortable atmosphere for evening strolls. However, be prepared for a bit of rain, as the month typically sees 167 mm (6.6 in) of precipitation over about 11 days. The humidity levels, averaging around 75%, add a tropical feel to this enchanting locale, making December a unique time to experience the beauty of Ogasawara.
In December, Ogasawara, Japan, experiences a pleasant transition as temperatures start to cool slightly, but remain remarkably mild compared to many other regions. The minimum temperature rests at a comfortable 17°C (63°F), while the average hovers around 22°C (71°F), peaking at a welcoming 26°C (78°F) during the warmer afternoons. This month marks a shift from the warmer autumn months, with a gradual decline in temperatures reflecting the island's subtropical climate. Despite this dip, December still offers a delightful environment, perfect for outdoor activities or exploring the unique natural beauty of the islands. As the year draws to a close, visitors can enjoy the serene atmosphere, which pairs beautifully with the gentle sea breezes.
In December, Ogasawara experiences a notable shift in its precipitation patterns, with 167 mm (6.6 in) of rainfall over 11 days. This marks a significant increase compared to the preceding months, particularly when juxtaposed with the drier spells of October and November, which recorded 158 mm (6.2 in) and 131 mm (5.1 in) of rain, respectively. The rainfall in December not only contributes to the lush greenery of the islands but also signals the transition into the wetter months. As winter descends, these precipitation levels set a tone for the upcoming year, highlighting the unique climate dynamics of this enchanting archipelago.
In Ogasawara, Japan, December experiences a notable drop in humidity, settling at 75%, a slight decrease from the preceding month. This transition marks a shift from the peak humidity levels often seen during the summer months, particularly June's 93%. The trend throughout the year reveals a gradual incline from 69% in January and February, escalating to a humid 87% in May before hitting its zenith in June. Following this climactic high, humidity levels slowly recede, with December's figures reflecting a steady moderation that suggests a shift towards cooler, more comfortable conditions as the year winds down. This seasonal ebb and flow highlights Ogasawara's unique climate, where humidity plays a critical role in shaping the island's environmental experience.
In December, Ogasawara, Japan, experiences a notable dip in the UV Index, reaching a level of 6 and falling into the high exposure category. This is a contrast to the preceding months, where the UV levels surged to an extreme of 13 during the summer. With a burn time extending to 25 minutes, residents and visitors can relish the sun's warmth a bit longer this month, while still staying mindful of protection against UV rays. As the year comes to a close, the trend is clear: while the intensity of sunlight decreases, vigilance remains key for skin safety. For more details on UV exposure in Ogasawara, visit Ogasawara UV Index.
UV Risk Categories
December in Ogasawara, Japan, embodies the gentle transition from the vibrant sunshine that characterizes the summer months to the more subdued light of winter. With 216 hours of sunshine, December reflects a slight decrease from the peak summer months of July and August, which enjoy abundant sunshine exceeding 320 hours. However, this month still holds onto a significant amount of bright days, providing a warm glow amidst the cooling temperatures. As the year winds down, the sun's rays remain a welcome companion, hinting at the seasonal shifts while inviting visitors to experience the unique charm of Ogasawara during the twilight of the year.
In Ogasawara, Japan, December experiences a 37% chance of sunny weather, mirroring the trends seen in the preceding months. As the year progresses towards winter, the likelihood of clear skies has shown some variability, peaking in August at an impressive 52%, while the earlier months of March and October also showcase higher sunshine probabilities at 47% and 49% respectively. However, December stands out with a consistent percentage in comparison to November's 37%, suggesting that although sunny days might not be guaranteed, the early winter offers a stable chance for pleasant weather within a generally fluctuating climate. This makes December an appealing time for those seeking a mild escape to this picturesque archipelago.
In Ogasawara, Japan, the daylight duration exhibits a rhythmic ebb and flow throughout the year, creating a captivating dance of light and shadow. As winter approaches in December, the daylights return to 10 hours, mirroring the length found in January and November. Leading up to this month, the duration peaks at 13 hours during the vibrant summer months of May to August, fostering a sense of energy and activity. The gradual return to shorter days signals a shift towards the serene and reflective atmosphere of winter, with daylight progressively diminishing from the 12 hours typical in September to 10 hours by year-end. This cyclical pattern not only marks the changing seasons but also invites residents and visitors to embrace the unique rhythm of life in this beautiful archipelago.
In December, Ogasawara, Japan, experiences a notable uptick in wind speed, averaging 8.0 m/s (18 mph), consistent with the breezy conditions seen in both April and October. This increase reflects a shift from earlier months, where the winds were generally gentler, with May and July recording the lowest averages at just 4.9 m/s (11 mph). Throughout the year, a clear trend emerges: while the winds tend to calm down in the summer months, they pick up in the autumn and winter, creating a refreshing contrast that invigorates the island's atmosphere. December's winds not only signal the arrival of cooler weather but also enhance the island’s scenic beauty, making it an ideal time for outdoor adventures amidst the brisk, invigorating air.
Weather in Ogasawara varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ogasawara, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures in Ogasawara range from a minimum of 17°C (63°F) to a maximum of 26°C (78°F), with an average of 22°C (71°F). This month also experiences significant precipitation, totaling 167 mm (6.6 in) over 11 days, and a humidity level of 75%. In contrast, January sees slightly cooler temperatures, with a minimum of 14°C (58°F), an average of 19°C (66°F), and a maximum of 24°C (75°F). Precipitation is much lower in January at 59 mm (2.3 in) over 8 days, and humidity eases to 69%. For more details, you can check the weather specifics here: Ogasawara weather in January.
December and February offer contrasting weather experiences. In December, temperatures range from a minimum of 17°C (63°F) to a maximum of 26°C (78°F), with an average of 22°C (71°F). It's also a wetter month, experiencing about 167 mm (6.6 in) of precipitation over 11 days, leading to a humidity level of 75%. In contrast, February sees milder temperatures, with a minimum of 14°C (58°F), an average of 18°C (65°F), and a maximum of 23°C (73°F). Additionally, February is much drier, with only 37 mm (1.5 in) of precipitation over 6 days and a lower humidity of 69%. For a more detailed look at February weather, you can refer to Ogasawara weather in February.
In December, temperatures in Ogasawara range from a minimum of 17°C (63°F) to a pleasant average of 22°C (71°F), with highs reaching up to 26°C (78°F). This month experiences considerable rainfall, with precipitation measuring 167 mm (6.6 in) over 11 days and a humidity level of 75%. In contrast, March sees slightly cooler temperatures, with a minimum of 15°C (59°F) and an average of 20°C (68°F), peaking at 23°C (74°F). The precipitation in March is significantly lower at 69 mm (2.7 in) across 9 days, while humidity remains similar at 74%. For more details, you can check Ogasawara weather in March.
In comparing the weather between December and April, we observe a slight decrease in average temperatures, with December showcasing a minimum of 17°C (63°F) and an average of 22°C (71°F), while April's minimum is slightly lower at 16°C (60°F) and an average of 21°C (70°F). Maximum temperatures in December reach up to 26°C (78°F), compared to a slightly cooler 25°C (77°F) in April. December experiences significantly higher precipitation, with 167 mm (6.6 in) over about 11 days, while April sees only 94 mm (3.7 in) across 9 days. Humidity levels in April are marginally higher at 81%, compared to December’s 75%. For more specific details on April weather, you can refer to Ogasawara weather in April.
In December, the weather features mild temperatures with a minimum of 17°C (63°F) and an average of 22°C (71°F), while maximums reach up to 26°C (78°F). This month sees moderate rainfall, totaling 167 mm (6.6 in) over 11 days, and humidity levels hover around 75%. In contrast, May experiences slightly warmer conditions, with temperatures ranging from a minimum of 18°C (65°F) to an average of 23°C (74°F), peaking at 27°C (81°F). Rainfall increases to 178 mm (7.0 in) across 12 days, accompanied by higher humidity at 87%. For a closer look at the weather specifics in May, you can reference Ogasawara weather in May.
In December, the weather features mild temperatures with a minimum of 17°C (63°F) and an average of 22°C (71°F), while max temperatures reach up to 26°C (78°F). The month sees 167 mm (6.6 in) of precipitation over approximately 11 days, accompanied by a humidity level of 75%. In contrast, June experiences slightly warmer temperatures, with a minimum of 21°C (70°F), an average of 26°C (79°F), and maximums touching 28°C (83°F). While the total precipitation is somewhat comparable, at 166 mm (6.5 in) distributed across 13 days, humidity levels rise significantly to 93%. For a deeper dive into the conditions during this month, check out Ogasawara weather in June.
December and July present quite different weather patterns. In December, temperatures are more moderate, with a minimum of 17°C (63°F) and an average of 22°C (71°F), peaking at a maximum of 26°C (78°F). This month experiences more rainfall, with 167 mm (6.6 in) over approximately 11 days, accompanied by a humidity level of 75%. In contrast, July is significantly warmer, with minimum temperatures around 25°C (77°F) and averages reaching 27°C (81°F), capping at 29°C (85°F). However, July has less precipitation overall, totaling 100 mm (3.9 in) across 14 days, but the humidity is notably higher at 88%. For a closer look at July weather specifics, visit Ogasawara weather in July.
When comparing the weather in December and August, there are notable differences in temperature, precipitation, and humidity. December typically features milder temperatures, with a minimum of 17°C (63°F) and an average of 22°C (71°F), while August is significantly warmer, with a minimum of 26°C (79°F) and an average of 28°C (82°F). In terms of precipitation, December experiences heavier rainfall, totaling 167 mm (6.6 in) over about 11 days, compared to August's 93 mm (3.7 in) spread over 13 days. Humidity levels are also higher in August at 84%, while December has a humidity level of 75%. For more information on the conditions in August, check out Ogasawara weather in August.
In December, the weather tends to be milder compared to September, with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 26°C (78°F). This contrasts with September's warmer averages, which span from a minimum of 25°C (77°F) to a maximum of 30°C (86°F). Both months experience significant precipitation, but December has slightly less with 167 mm (6.6 in) over 11 days, compared to September's 181 mm (7.1 in) over 16 days. Additionally, humidity is typically lower in December at 75%, while September's humidity reaches 85%, contributing to a more humid feel during that month. For a detailed look at weather patterns, you can visit Ogasawara weather in September.
The weather in December is noticeably cooler than in October, with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 26°C (78°F). In contrast, October boasts warmer conditions, with temperatures starting at 21°C (71°F) and peaking at 29°C (85°F). While December experiences slightly more rainfall at 167 mm (6.6 in) over 11 days, October also sees considerable precipitation at 158 mm (6.2 in) across 19 days, contributing to higher humidity levels of 82% compared to December's 75%. For more detailed information, you can check Ogasawara weather in October.
In December, the weather sees a slight drop in temperatures compared to November, with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 26°C (78°F), while November's temperatures are slightly warmer, with averages between 19°C (67°F) and 27°C (81°F). Precipitation levels also increase in December, reaching 167 mm (6.6 in) over 11 days, compared to November's 131 mm (5.1 in) spread over 14 days. Additionally, the humidity remains high in both months, at 75% in December and 80% in November, contributing to a somewhat muggy atmosphere. For a more detailed look at how November weather feels, check out Ogasawara weather in November.
As December arrives in Ogasawara, the weather begins to cool, offering a refreshing reprieve from the warmer months. With average temperatures settling around 22°C (71°F), the month stands out as a comfortable time to explore the island's natural beauty. However, this transition also brings increased humidity and a noticeable uptick in precipitation days, marking December as one of the wetter months of the year. The lush landscapes and vibrant scenery are enhanced by the occasional rain, making it an ideal time for outdoor activities despite the drizzle. For a deeper dive into the overall climate trends, visit Ogasawara Climate.