Last updated: August 21, 2025
Experience the delightful December weather of Ishigaki, Japan, where temperatures range from a comfortable 14°C (57°F) at night to a pleasant maximum of 26°C (79°F) during the day. With an average temperature of 22°C (71°F), this month is perfect for enjoying the island's stunning landscapes. However, be prepared for a fair bit of rain, as 197 mm (7.8 in) of precipitation falls over 20 days, contributing to the lush tropical scenery. The humidity levels hover around 78%, adding to the warm atmosphere. Embrace the unique charm of Ishigaki as it transforms into a vibrant escape this December!
In December, Ishigaki, Japan, begins to cool slightly as the year wraps up, with temperatures displaying a refreshing range that invites exploration. The minimum temperature hovers around 14°C (57°F), while the average holds steady at 22°C (71°F), providing a pleasant backdrop for outdoor activities. With a maximum of 26°C (79°F), the days remain comfortably warm, making it an ideal time for beach strolls or enjoying the local flora. As the month transitions, the gradual decline from the warmer autumn months is evident, but the overall climate remains enjoyable, reflecting the island's mild winter appeal.
December in Ishigaki, Japan, marks a significant shift in precipitation patterns as the year draws to a close. With 197 mm (7.8 in) of rainfall over 20 days, it contributes to one of the wetter months of the year, following the even higher precipitation seen in August. This is indicative of a trend where late-year months tend to see increased rainfall, potentially linked to the lingering effects of the summer monsoon. Interestingly, despite December's substantial rainfall, it remains less frequent than peak summer months, yet still showcases the island's humid subtropical climate. As the holiday season approaches, the increased precipitation helps to nourish the lush landscapes, reinforcing Ishigaki's reputation as a tropical paradise even in the cooler months.
In Ishigaki, Japan, December brings a slight reprieve from the peak humidity of the summer months, with the average humidity dropping to 78%. This marks a gradual decline from the high of 84% experienced during the height of the season from May through July. As the year progresses, there’s a noticeable trend of steadily increasing humidity from the cooler months of January and February, where levels sit around 76% and 74% respectively. However, after reaching their zenith in June and July, humidity levels begin to taper off, providing a breath of fresh air before the onset of winter. December's humidity, while slightly lower, still reflects the island's tropical climate, ensuring that visitors can expect a warm, humid environment as they close out the year.
In Ishigaki, Japan, the UV Index shows a notable trend as the year progresses. Starting from a very high UV Index of 8 in January, it surges to an alarming 12 by March, marking the onset of extreme exposure conditions that persist through May. The highest UV Index recorded is 13 during the summer months of June to September, where the danger of sunburn is pronounced, necessitating protective measures within just 10 minutes of direct sunlight. As the year winds down, the UV Index decreases slightly to 10 in October and 9 in November, before settling at a high rating of 7 in December, allowing for a more manageable 25-minute burn time. This seasonal variation reminds residents and visitors alike to stay informed about the changing UV levels and their implications on outdoor activities. For more insights, check out the detailed Ishigaki UV Index.
UV Risk Categories
Ishigaki, Japan, experiences a dynamic transition in sunlight hours as the year progresses, with December marking a cozy close to the year with 205 hours of sunshine. While this is a dip from the sun-drenched peak of July at 334 hours, December still benefits from substantial light, illuminating the island's scenic beauty. The trend showcases a gradual increase in sunlight from January's 163 hours up to May's impressive 318 hours, before a gentle decline begins. This pattern not only highlights the vibrant seasonal changes but also sets a picturesque stage for winter explorations, making December a lovely time to savor Ishigaki's natural allure.
In Ishigaki, Japan, December presents a 34% chance of sunny weather, marking a modest decline as the year wraps up. This month is part of a trend where winter months generally show lower probabilities of sunshine compared to the vibrant late summer and autumn, notably peaking in September with 61% sun. However, December offers a pleasant respite from the heavy cloud cover of earlier months like June, which sees only 9% sunshine. As the year transitions, sunshine opportunities remain present, albeit less frequent, giving visitors a chance to enjoy the mild winter warmth amid the island's enchanting scenery.
In Ishigaki, Japan, the daylight duration experiences a fascinating ebb and flow throughout the year. Starting off with 10 hours in January, the days gradually lengthen to a peak of 13 hours from May to July, creating the perfect backdrop for summer adventures. As autumn takes hold, daylight begins to taper off again, dipping back to 10 hours by December, mirroring the length seen at the year's start. This rhythm of bright summer days followed by shorter, cozy winter hours highlights Ishigaki's dynamic seasonal character, inviting visitors to enjoy the vibrant landscapes across the changing months.
As December unfolds in Ishigaki, Japan, the island greets the end of the year with an invigorating breeze, averaging 8.7 m/s (20 mph)—the highest wind speed of the year. This increase in wind intensity follows a subtle rise observed in the months leading up to winter, where November's winds clock in at 7.6 m/s (17 mph). The trend showcases a seasonal shift, with December's winds invigorating the landscape and heralding the cooler, drier season. As the winds whip through the palm trees and dance across the turquoise waters, they carry a refreshing zest that invigorates both the island's natural beauty and the spirit of its visitors.
Weather in Ishigaki varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ishigaki, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January exhibit similar warm temperatures, but January tends to be slightly cooler overall. In December, the minimum temperature averages 14°C (57°F), while in January it drops to 12°C (55°F), with January's average temperature also lower at 20°C (69°F) compared to December's 22°C (71°F). Precipitation is notably higher in December, with 197 mm (7.8 in) over 20 days, contrasted with January's 109 mm (4.3 in) over 15 days, indicating a drier month. Humidity remains fairly consistent, at 78% for December and 76% for January, suggesting a humid atmosphere throughout both months. For more information on weather specifics, you can visit Ishigaki weather in January.
In December, the weather is characterized by slightly warmer temperatures, with averages around 22°C (71°F) and maximums reaching up to 26°C (79°F). However, this month also brings significant rainfall, totaling 197 mm (7.8 in) over approximately 20 days, contributing to higher humidity levels of 78%. In contrast, February sees a slight decrease in average temperature to 20°C (69°F) with maximums of 25°C (77°F), and a considerable drop in precipitation to 82 mm (3.2 in) over about 14 days. The humidity also decreases slightly to 74%, making February a more pleasant month overall. For further details about the February weather, you can check Ishigaki weather in February.
In December, the weather tends to be warm with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 26°C (79°F), and an average of 22°C (71°F). However, this month is notably wetter, with approximately 197 mm (7.8 in) of precipitation over 20 days and a humidity level of 78%. In contrast, March shows a slight increase in minimum temperature at 16°C (61°F), while the average and maximum temperatures remain the same at 22°C (71°F) and 26°C (78°F), respectively. The precipitation in March decreases to 140 mm (5.5 in) over 14 days, with humidity rising slightly to 79%. For more detailed insights, you can visit Ishigaki weather in March.
When comparing the weather in December and April, both months exhibit mild temperatures, but April tends to be slightly warmer. December features a minimum temperature of around 14°C (57°F) and an average of 22°C (71°F), while April boasts a minimum of 17°C (63°F) and an average of 23°C (74°F). Additionally, December sees more precipitation, totaling 197 mm (7.8 in) over 20 days, compared to April's 146 mm (5.8 in) across 13 days. Both months have relatively high humidity, with December at 78% and April slightly higher at 82%. For more detailed insights, you can check Ishigaki weather in April.
In December, Ishigaki experiences milder temperatures, with a minimum of 14°C (57°F) and an average of 22°C (71°F), compared to May, where temperatures start at a higher minimum of 21°C (71°F) and average around 26°C (79°F). While both months have significant humidity, December's humidity is slightly lower at 78%, whereas May sees a higher humidity level of 84%. Precipitation is more frequent in December, with 197 mm (7.8 in) over 20 days, contrasting with May's 139 mm (5.5 in) spread across 14 days. For a closer look at conditions during this vibrant month, you can check Ishigaki weather in May.
December and June exhibit notable differences in weather patterns. In December, temperatures range from a minimum of 14°C (57°F) to a comfortable average of 22°C (71°F) and can reach a maximum of 26°C (79°F). The month experiences substantial rainfall, accumulating 197 mm (7.8 in) over 20 days, with a humidity level of 78%. In contrast, June sees warmer temperatures, with a minimum of 25°C (76°F), an average of 28°C (82°F), and a maximum of 30°C (86°F). Although June has slightly less precipitation at 184 mm (7.2 in) over 16 days, the humidity rises to 84%. For a detailed look at Ishigaki's climate, you can read more Ishigaki weather in June.
December and July present quite different weather patterns. In December, temperatures range from a mild 14°C (57°F) at night to a warm average of 22°C (71°F) during the day, with maximum highs reaching 26°C (79°F). The month tends to be quite rainy, boasting 197 mm (7.8 in) of precipitation over 20 days and exhibiting a humidity level of 78%. In contrast, July showcases significantly warmer temperatures, with minimums around 27°C (80°F) and daily averages of 29°C (84°F), peaking at 30°C (87°F). Although July experiences slightly less rainfall at 182 mm (7.2 in) over 16 days, the humidity rises to 84%, making the atmosphere feel quite tropical. For a closer look at the specifics of July weather, check out Ishigaki weather in July.
When comparing the weather in December and August, it's clear that December is significantly cooler and wetter. In December, temperatures range from a minimum of 14°C (57°F) to a maximum of 26°C (79°F), with an average of 22°C (71°F). This month also experiences considerable rainfall, totaling 197 mm (7.8 in) over 20 days, accompanied by high humidity at 78%. In contrast, August boasts much warmer temperatures, with a minimum of 26°C (79°F) and a maximum of 30°C (86°F), averaging 28°C (83°F). Interestingly, August is even wetter, receiving 280 mm (11.0 in) of precipitation over 21 days and slightly higher humidity at 83%. For more specific insights into August weather, you can check Ishigaki weather in August.
In December, the weather tends to be milder, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 26°C (79°F) and an average of 22°C (71°F). In contrast, September is warmer, with minimum temperatures starting at 25°C (78°F) and peaking at 30°C (87°F), averaging around 28°C (83°F). Both months experience significant rainfall, with December seeing approximately 197 mm (7.8 in) over 20 days, while September has slightly less precipitation at 182 mm (7.2 in) over 17 days. Humidity levels are relatively high in both months, with December at 78% and September slightly higher at 82%. For more details on September weather, you can check Ishigaki weather in September.
In comparing the weather of December and October, we find some notable differences. While December experiences slightly cooler temperatures, with a minimum of 14°C (57°F) and an average of 22°C (71°F), October maintains a warmer vibe with a minimum of 22°C (72°F) and an average of 26°C (79°F). Precipitation is more frequent in December, occurring over 20 days and totaling 197 mm (7.8 in), compared to October's 17 rainy days and 173 mm (6.8 in). Humidity levels are quite similar, with December at 78% and October slightly higher at 81%. For more detailed insights into October's weather, you can check Ishigaki weather in October.
In comparing the weather of December to November, December experiences slightly cooler temperatures, with a minimum of 14°C (57°F) compared to November's 20°C (68°F). The average temperature in December is 22°C (71°F), while November maintains a warmer average of 24°C (76°F). December also sees increased rainfall, with 197 mm (7.8 in) over 20 days, as opposed to November's 151 mm (5.9 in) across 16 days. Additionally, humidity levels are similar, standing at 78% in December and 80% in November. For more detailed insights, you can refer to Ishigaki weather in November.
December in Ishigaki brings a distinct shift in weather, transitioning from the warmer, more humid months into a cooler, wetter season. While daytime temperatures remain pleasantly mild, averaging around 22°C (71°F), the nights can dip into the refreshing low teens, inviting cozy evenings. This month encounters more rainfall, with precipitation spanning about 20 days, contributing to the island's lush greenery, yet also making it essential for visitors to pack an umbrella. The elevated humidity at 78% can create a unique tropical atmosphere, differing from the drier summer months. For more detailed insights into the annual weather patterns, check out the full report at Ishigaki Climate.