Last updated: August 21, 2025
In Okinawa, Japan, December offers a mild climate, with average temperatures hovering around 20°C (69°F). Daytime highs can reach a comfortable 25°C (78°F), while nights cool down to a minimum of 14°C (58°F). Although the weather is pleasant, visitors should be prepared for frequent rainfall, as this month sees about 188 mm (7.4 in) of precipitation spread across 16 days. With a humidity level of 75%, December in Okinawa combines warmth with a touch of tropical moisture, creating an inviting atmosphere perfect for exploring the island's natural beauty.
In December, Okinawa welcomes a mild winter, with temperatures showcasing a gentle transition from the warmth of autumn. The average temperature settles around 20°C (69°F), offering a comfortable retreat as the year wraps up. Morning temperatures dip slightly to a minimum of 14°C (58°F), while the afternoons can be pleasantly warm, reaching up to 25°C (78°F). This mild climate is a stark contrast to many colder regions, making Okinawa an appealing destination for those seeking a sunny escape. As the month progresses, the consistent warmth hints at the island's subtropical charm, fostering a serene environment perfect for outdoor activities and cultural exploration.
December in Okinawa, Japan, brings a notable shift in precipitation patterns as the year draws to a close. With 188 mm (7.4 in) of rain over 16 days, December stands out as one of the wetter months, following closely behind the more intense summer months. This increase in rainfall reflects a transition from the drier conditions experienced in the early winter, as September and October often deliver heavier downpours. As the holiday season approaches, residents and visitors alike can expect cool, rainy days, creating a unique atmosphere that balances festive cheer with the serene beauty of the island. This trend of increased precipitation paves the way into the new year, promising lush landscapes nourished by the Pacific’s generous winter shower.
In Okinawa, Japan, December marks a slight dip in humidity levels, with averages resting at 75%. This represents a gentle decline from the high summer months, where humidity peaks at 86% in both June and July. The trend reveals a gradual increase in moisture levels from the winter months of January and February, both at 71%, steadily rising through spring and summer until reaching their zenith. As the year winds down, humidity decreases to its lowest point for the month in December, hinting at a shift towards drier winter conditions while maintaining a relatively humid atmosphere compared to drier climates. This interplay of humidity throughout the year creates a lush environment, characteristic of Okinawa's unique tropical landscape.
In Okinawa, Japan, the UV Index in December stands at 6, categorizing it as high with an estimated burn time of 25 minutes. This marks a notable decrease from the extreme levels experienced throughout summer and early autumn, where UV Index values peaked at 13 from May through August. As the year winds down, the UV Index drops significantly from the elevated readings of 9 observed in the preceding months of October and November. Such trends underscore the seasonal fluctuations in sun exposure, reminding visitors and locals alike to stay vigilant about sun protection, especially during the sunnier days even in winter. For more detailed information, check out the Okinawa UV Index.
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December in Okinawa embraces a mellow transition from the sun-drenched days of summer, with 192 hours of sunshine illuminating the beautiful landscapes. While this is a decrease from the peak summer months of July and August, which enjoyed over 300 hours of sunlight, it remains significantly brighter than the early winter months. The sun gradually begins to retreat after November's 228 hours, but December's gentle rays still provide a cozy respite, making it a delightful time to explore the island's enchanting scenery and vibrant culture. As the year closes, the sunlight lingers just enough to remind us of the warmth that awaits in the coming months.
In December, Okinawa experiences a 35% chance of sunny weather, marking a slight dip from the more vibrant autumn months but still significantly better than the summer, where the sun shines only 9% of the time. This month sits comfortably within the moderate sun ranges seen during late fall, following November's 44%. While you won't find the peak sunshine of spring months like March (46%), the transition from the summer's heavy cloud cover offers a pleasant opportunity to enjoy Okinawa's milder weather. As the year closes, December retains a decent likelihood of clear skies, making it a charming time to explore the island's natural beauty.
As December arrives in Okinawa, Japan, daylight duration settles at 10 hours, mirroring the shorter days seen in January and November. Throughout the year, there is a clear upward trend as the days gradually elongate from 10 hours in winter to a peak of 13 hours over the summer months of May through August. This rhythm of daylight underscores Okinawa's subtropical climate, offering a bright and inviting atmosphere during its warmest seasons. As autumn fades and winter takes hold, the return to 10 hours of daylight reminds residents and visitors alike of the island's unique seasonal cycle, where longer, sun-filled days are a cherished part of life.
As December unfolds in Okinawa, Japan, the average wind speed settles at a brisk 7.7 m/s (17 mph), marking a noteworthy transition from the milder breezes of autumn. This month's winds are slightly stronger than those in the preceding months, reflecting a consistent pattern observed since October, where gusts also reached 7.9 m/s (18 mph). Throughout the year, Okinawa experiences fluctuating wind patterns, with January typically presenting the most vigorous winds at 8.2 m/s (18 mph). However, the late-year winds maintain a refreshing energy, bridging the gentle breezes of spring and summer with the invigorating currents of winter. December's winds not only invigorate the landscape but also invigorate the spirit, beckoning both locals and visitors to embrace the island’s vibrant outdoor offerings.
Weather in Okinawa varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Okinawa, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather tends to be slightly warmer with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 25°C (78°F). This month also experiences considerable rainfall, with an average precipitation of 188 mm (7.4 in) over approximately 16 days, leading to a humidity level of 75%. In contrast, January sees a slight dip in temperatures, with minimums of 12°C (54°F) and maximums around 24°C (75°F), and an average of 19°C (66°F). This month is drier, with only 91 mm (3.6 in) of rain over 11 days and humidity dropping to 71%. For more detailed information, you can check out Okinawa weather in January.
December and February both showcase relatively mild winter weather, but with notable differences. In December, temperatures range from a minimum of 14°C (58°F) to a maximum of 25°C (78°F), averaging around 20°C (69°F). The month experiences higher precipitation, totaling 188 mm (7.4 in) over approximately 16 days, along with a humidity level of 75%. In contrast, February sees slightly cooler temperatures, with a minimum of 12°C (54°F) and a maximum of 24°C (76°F), averaging at 19°C (66°F). Precipitation decreases significantly to 97 mm (3.8 in) over about 12 days, and humidity also drops to 71%. For a closer look at the weather specifics in February, you can check Okinawa weather in February.
In December, the weather is characterized by a comfortable range of temperatures, with minimums around 14°C (58°F) and maximums reaching up to 25°C (78°F). However, this month sees more precipitation, averaging 188 mm (7.4 in) over approximately 16 days, resulting in a humidity level of 75%. In contrast, March offers slightly warmer conditions, with average temperatures ranging from 14°C (57°F) to a maximum of 24°C (76°F) while experiencing significantly less rainfall at 107 mm (4.2 in) spread across 11 days. The humidity remains similar at 76%, making both months feel relatively humid. For more detailed insights on the weather patterns, you can visit Okinawa weather in March.
In December, the weather tends to be slightly cooler with average temperatures ranging from 14°C (58°F) to a max of 25°C (78°F). This month experiences higher precipitation levels, with about 188 mm (7.4 in) spread over 16 days, contributing to a humidity level of 75%. In contrast, April sees a gradual warming, with temperatures starting at a minimum of 15°C (60°F) and peaking at 26°C (79°F). Although it is slightly wetter than December, April's total precipitation of 137 mm (5.4 in) occurs over fewer days, just 11 in total, and the humidity increases to 82%. For a detailed look at how April compares, check out Okinawa weather in April.
December and May in Okinawa exhibit distinct weather patterns. December has a milder climate, with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 25°C (78°F) and an average of 20°C (69°F). The month experiences about 188 mm (7.4 in) of precipitation over 16 days, with humidity levels around 75%. In contrast, May sees warmer temperatures, with a minimum of 19°C (67°F) and a maximum of 27°C (82°F), averaging 24°C (76°F). Precipitation in May is slightly higher at 208 mm (8.2 in), occurring over just 12 days, and humidity increases to 84%. For more details, you can check Okinawa weather in May.
December and June present contrasting weather patterns, showcasing the diversity of the seasons. In December, temperatures range from a mild minimum of 14°C (58°F) to a comfortable maximum of 25°C (78°F), combined with a precipitation total of 188 mm (7.4 in) over 16 days and a humidity level of 75%. In contrast, June heats up with minimum temperatures starting at 21°C (70°F) and peaking at 29°C (84°F), accompanied by higher precipitation of 302 mm (11.9 in) spread over 19 days and increased humidity at 86%. For a detailed look at June's weather specifics, check out Okinawa weather in June.
In December, the weather is milder with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 25°C (78°F), while the average temperature hovers around 20°C (69°F). This month experiences notable precipitation, totaling 188 mm (7.4 in) over 16 days, coupled with a humidity level of 75%. In contrast, July is considerably warmer, featuring temperatures that range from a minimum of 26°C (78°F) to a maximum of 30°C (87°F), with an average of 28°C (83°F). The month sees slightly more rainfall, 192 mm (7.6 in), but over fewer days, at 13. Moreover, humidity rises to 86%. For more details, check out the Okinawa weather in July.
In December, the weather is milder with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 25°C (78°F), while August experiences much warmer conditions, with temperatures typically between 26°C (78°F) and 30°C (87°F). Both months see significant rainfall, with December receiving about 188 mm (7.4 in) across 16 days and August slightly wetter at 205 mm (8.1 in) over 17 days. Additionally, humidity levels are higher in August at 82%, compared to 75% in December. For a more detailed look at August conditions, check out Okinawa weather in August.
December and September in Okinawa present contrasting weather patterns. December boasts milder temperatures, with averages ranging from a minimum of 14°C (58°F) to a maximum of 25°C (78°F), while September experiences warmer conditions, with temperatures spanning from a minimum of 24°C (75°F) to a maximum of 30°C (87°F). Precipitation is also more pronounced in September, totaling 253 mm (10.0 in) over 19 days compared to December's 188 mm (7.4 in) over 16 days. Additionally, September has higher humidity levels at 82%, compared to December's 75%. For a more detailed look, check out Okinawa weather in September.
In comparing the weather of December and October, it is evident that December tends to be cooler, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 25°C (78°F). In contrast, October is warmer, showcasing average temperatures that vary from a minimum of 21°C (71°F) to a maximum of 29°C (84°F). Additionally, December experiences more precipitation, totaling 188 mm (7.4 in) over 16 days, compared to October's 160 mm (6.3 in) over 13 days. Humidity levels are also slightly lower in December at 75%, compared to October's 80%. For a more detailed look at October weather, you can check out Okinawa weather in October.
December weather in Okinawa tends to be cooler compared to November, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 25°C (78°F). In contrast, November generally sees warmer temperatures, with lows around 19°C (67°F) and highs peaking at 27°C (80°F). Additionally, December experiences significantly more rainfall, with 188 mm (7.4 in) over 16 days, compared to November's 103 mm (4.1 in) over just 11 days. Humidity levels are slightly lower in December at 75%, compared to 79% in November. For more detailed information, check out Okinawa weather in November.
As December sets in, Okinawa's weather takes on a notably milder tone compared to the hotter months, with comfortable averages around 20°C (69°F). While the sunshine is still prevalent, it's accompanied by a slight increase in humidity at about 75%, making the air feel a bit more tropical. December also experiences a rise in precipitation, with rain gracing the island on about half the days of the month, contributing to a lush, green landscape. This transition ushers in a delightful balance of warmth and inviting breezes, making it an ideal time for leisurely exploration. For more insights into the unique climate of this beautiful island, check out the specifics on Okinawa Climate.