Last updated: August 21, 2025
In Rishiri Town, Japan, December ushers in a chill that transforms the landscape. The maximum temperature peaks at a mild 12°C (55°F), while the average hovers around a brisk -1°C (31°F). Nighttime temperatures can plunge to a biting minimum of -9°C (16°F), making warm layers essential for residents and visitors alike. This month also sees significant precipitation, totaling 167 mm (6.6 in) across approximately 27 days, contributing to the town’s enchanting winter scenery. With humidity levels averaging 83%, December in Rishiri presents a quintessential winter experience, perfect for those who revel in the beauty of snowy climates.
In Rishiri Town, Japan, December heralds the onset of winter with increasingly chilly temperatures. As the month unfolds, residents experience minimum lows of -9°C (16°F), setting a sharp contrast to the milder autumn months. The average temperature hovers around -1°C (31°F), hinting at the deepening cold, while maximum daytime temperatures reach a mild 12°C (55°F). This downward trend in temperatures is consistent with the shift from the previous month of November, which recorded higher daytime highs and less severe lows. December’s crisp air and potential for snow transform Rishiri into a picturesque winter landscape, inviting visitors to embrace the season's charm.
December in Rishiri Town, Japan, brings a significant uptick in precipitation, with 167 mm (6.6 inches) of rain gracing the region across a remarkable 27 days. This spike marks a notable continuation from November's hefty 172 mm (6.8 inches), reinforcing the winter's wet embrace. As temperatures drop, the increased number of precipitation days suggests a persistent, cozy mist enveloping the town, creating a serene but somewhat damp atmosphere. Looking back, the month aligns with a seasonal trend of escalating moisture: from the milder autumn months leading into a winter characterized by frequent rainy spells, December stands as a defining moment in this pattern, inviting both locals and visitors to savor the unique charm of Rishiri's winter landscape.
In Rishiri Town, Japan, December sees an average humidity of 83%, signaling the onset of winter. This figure reflects a slight dip compared to the peak humidity levels observed in the summer months, particularly in July and August, when humidity reaches a balmy 93% and 94%, respectively. As the year progresses from the lush, humid summer into the cooler, drier winter, humidity levels gradually decline, hitting their lowest points in November (77%) and October (79%). However, December’s humidity marks a return to higher levels, reminiscent of earlier months like April and February, maintaining a cool and crisp atmosphere as the year draws to a close.
In December, Rishiri Town experiences a significant drop in UV exposure, with the UV Index reaching a low of 1. This means that the risk of harm from unprotected sun exposure is minimal, allowing residents and visitors to enjoy outdoor activities without the immediate concern of sunburn—burn time is approximately 45 minutes. This sharp decline follows several months of very high levels during the summer, highlighting a clear trend of decreasing UV intensity as winter sets in. As the weather cools, it’s refreshing to see that December provides a safer environment for sun-seekers. For more detailed information about year-round UV patterns, check out the Rishiri Town UV Index.
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As December rolls into Rishiri Town, Japan, the island embraces a gentle retreat from the brilliant brightness of the preceding summer months. With 163 hours of sunshine, December marks a noticeable decline following the peak of 325 hours in July. This trend reflects the island's transition into winter, where shorter days gradually yield to the cozy embrace of snow-capped landscapes. The month sees a significant drop from November’s 181 hours, yet it still holds onto a glimmer of light before the sun sinks lower on the horizon. As locals and visitors alike prepare for the chill of winter, the remaining sunshine offers a serene backdrop, inviting a moment of reflection amidst the serene beauty of Rishiri’s winter season.
In Rishiri Town, Japan, the likelihood of sunny weather exhibits a distinct seasonal trend throughout the year. December, with a 24% chance of sunshine, marks a dip following the milder autumn months, where the probabilities range from 31% in November to a more optimistic 46% during the summer months. As the year progresses from winter's gloomy grasp, the sunny likelihood starts to rise noticeably in March at 34%, peaking at 46% in June and September. This pattern highlights a gradual transition from the long, gray winter days toward brighter, more inviting spring and summer vistas, making December a time of anticipation for the sunnier days ahead.
As the year winds down, Rishiri Town, Japan, experiences a notable decrease in daylight duration throughout December, where the sun graces the skies for just 8 hours each day. This decline marks a steady trend from November’s 9 hours, reflecting the onset of winter. The gradual shortening of daylight can be seen from the peak of 15 hours during midsummer in June and July, tapering down as the colder months approach. With each passing month, the transition from the long days of summer to the shorter, more subdued winter days is palpable, inviting the community to embrace the cozy charm of longer nights and the magical allure of winter.
In Rishiri Town, Japan, December ushers in a notable increase in wind activity, with average wind speeds reaching 9.3 m/s (21 mph), making it the windiest month of the year. This uptick contrasts sharply with the gentler breezes of summer, where July sees the lowest average at 4.7 m/s (10 mph). As autumn gives way to winter, wind speeds generally rise, with November also close behind at 8.8 m/s (20 mph). Interestingly, this trend highlights a seasonal shift; while spring and summer offer more subdued conditions, the arrival of winter showcases a surge in wind intensity, providing a dynamic backdrop to the stunning landscapes of Rishiri.
Weather in Rishiri Town varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Rishiri Town, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January exhibit notable differences in weather conditions. December typically has a milder average temperature of around -1°C (31°F), with a maximum reaching 12°C (55°F). In contrast, January sees a drop in temperatures, with an average of -3°C (27°F) and a maximum of only 5°C (40°F), making it the colder of the two months. Additionally, December experiences more precipitation, totaling 167 mm (6.6 in) over 27 days, while January has 108 mm (4.3 in) across 21 days. The humidity slightly increases in January to 87%, compared to December's 83%. For more detailed information, you can check Rishiri Town weather in January.
December weather typically presents milder temperatures compared to February, with average lows reaching -9°C (16°F) and highs of 12°C (55°F). In contrast, February shows a sharper decline, featuring average temperatures as low as -14°C (7°F) and a maximum of only 5°C (41°F). Additionally, December experiences higher precipitation rates, with about 167 mm (6.6 in) spread over 27 days, while February sees less rainfall totaling 103 mm (4.1 in) over 21 days. Notably, humidity remains slightly elevated in both months, at 83% in December and 84% in February. For more detailed weather patterns during February, you can check Rishiri Town weather in February.
December weather is characterized by colder temperatures, with minimums dropping to -9°C (16°F) and average highs reaching only 12°C (55°F). The month experiences a significant amount of precipitation, totaling 167 mm (6.6 in) spread over 27 days, contributing to a damp and chilly atmosphere, with humidity consistently around 83%. In contrast, March sees slightly milder conditions, with temperatures ranging from a minimum of -7°C (20°F) to an average of 1°C (34°F) and a maximum of 8°C (46°F). Additionally, March experiences much less precipitation, amounting to 75 mm (2.9 in) over 14 days, while maintaining the same humidity level of 83%. For a more detailed look at the weather in this transition month, you can check out Rishiri Town weather in March.
In December, temperatures in Rishiri Town can range from a frigid minimum of -9°C (16°F) to a maximum of 12°C (55°F), with an average of -1°C (31°F). The month experiences significant precipitation, totaling 167 mm (6.6 in) over approximately 27 days, contributing to a high humidity level of 83%. In contrast, April brings a milder climate with temperatures ranging from a minimum of -2°C (29°F) to a more moderate maximum of 11°C (52°F) and an average of 5°C (41°F). Precipitation decreases considerably to 50 mm (2.0 in) over just 9 days, while humidity remains slightly higher at 84%. For a more detailed look at April weather, you can visit Rishiri Town weather in April.
December weather is characterized by significantly colder temperatures, with lows reaching as low as -9°C (16°F) and averaging around -1°C (31°F). In contrast, May brings a much milder climate, with temperatures beginning at a minimum of 2°C (36°F) and averaging 9°C (48°F), peaking at 17°C (62°F). Precipitation is also notably higher in December, measuring 167 mm (6.6 in) over 27 days compared to May's 78 mm (3.1 in) over a much shorter span of just 11 days. Despite the increased warmth and reduced precipitation in May, humidity remains relatively high at 88%, just slightly above December's 83%. For more details specifically about the weather in May, check out Rishiri Town weather in May.
In December, Rishiri Town experiences much colder temperatures with minimums dropping to -9°C (16°F) and an average of -1°C (31°F), while June sees milder temperatures, ranging from a minimum of 6°C (43°F) to an average of 13°C (55°F). December is also characterized by significantly higher precipitation, totaling 167 mm (6.6 in) over 27 days, compared to June's 88 mm (3.5 in) over just 10 days. Humidity levels are slightly higher in June at 88%, compared to December's 83%, but both months exhibit a relatively humid climate. For more detailed information about Rishiri Town weather in June, you can visit Rishiri Town weather in June.
The weather in December showcases a significant chill, with temperatures ranging from a minimum of -9°C (16°F) to a maximum of 12°C (55°F), resulting in an average of -1°C (31°F). This month witnesses considerable precipitation, totaling 167 mm (6.6 in) over 27 days, and a humidity level of 83%. In stark contrast, July presents a much warmer climate, with temperatures varying from a minimum of 10°C (51°F) to a maximum of 26°C (78°F), averaging 18°C (64°F). Rainfall in July is also lower, at 104 mm (4.1 in), spread over just 8 days, and the humidity rises slightly to 93%. For more detailed information on July weather, you can visit Rishiri Town weather in July.
December and August present contrasting weather conditions. In December, temperatures can plummet to a minimum of -9°C (16°F), with an average of -1°C (31°F) and a maximum of 12°C (55°F). The month features substantial precipitation, totaling 167 mm (6.6 in) over 27 days, and humidity levels sit at 83%. In stark contrast, August enjoys warmer weather, with minimum temperatures around 15°C (60°F), an average of 20°C (68°F), and a maximum of 26°C (79°F). Precipitation is lower at 148 mm (5.8 in) and spread over just 13 days, with humidity slightly higher at 94%. This variation highlights the significant seasonal shift in climate, making December much colder and wetter compared to the warm, humid days of August. For more details on August weather, you can visit Rishiri Town weather in August.
In comparing the weather between December and September, it's clear that these two months present vastly different climates. December experiences colder temperatures, with a minimum of -9°C (16°F) and an average of -1°C (31°F), contrasted with September's milder temperatures ranging from a minimum of 12°C (53°F) to a maximum of 25°C (77°F). Additionally, December sees significantly more precipitation, totaling 167 mm (6.6 in) over 27 days, while September has much lighter rainfall, at 92 mm (3.6 in) over just 10 days. Humidity levels are relatively similar, with December at 83% and September slightly higher at 86%. For those interested in Rishiri Town's specific weather during September, you can find more details here: Rishiri Town weather in September.
In comparing the weather between December and October, we observe significant differences in both temperature and precipitation. December experiences colder temperatures, with minimums dropping to -9°C (16°F) and an average around -1°C (31°F), while October enjoys milder conditions, with average temperatures of 13°C (56°F) and maximums reaching 19°C (67°F). Additionally, December is characterized by higher precipitation levels, totaling 167 mm (6.6 in) over 27 days, compared to October's 136 mm (5.4 in) over 16 days. Humidity is also slightly higher in December at 83%, compared to 79% in October. For more detailed October weather conditions, you can check Rishiri Town weather in October.
In comparing the weather of December to November, December experiences significantly colder temperatures, with a minimum of -9°C (16°F) compared to November's minimum of -5°C (22°F). While November's average temperature reaches 6°C (42°F) and a maximum of 15°C (59°F), December's averages dip to -1°C (31°F) and a maximum of only 12°C (55°F). Precipitation levels are relatively similar, with December receiving 167 mm (6.6 in) over 27 days, just slightly less than November's 172 mm (6.8 in) across 22 days. Additionally, December has a higher humidity level at 83%, compared to November's 77%. For more specific details on November weather in Rishiri Town, you can visit Rishiri Town weather in November.
As December settles in, Rishiri Town transforms into a winter wonderland, distinctly cooler than the previous months. The crisp air and higher humidity coupled with nearly 27 days of precipitation create a unique atmosphere, setting the stage for tranquil snowy landscapes. With temperatures ranging from mild highs to biting lows, December offers a stark contrast to the milder weather earlier in the year. For those keen to explore more about how Rishiri's climate shifts throughout the seasons, check out Rishiri Town Climate.