January Weather in Asuka, Japan

Last updated: August 21, 2025

In January, the charming town of Asuka, Japan, experiences a diverse and dynamic climate. With a maximum temperature peaking at 16°C (61°F) and an average of 4°C (40°F), chilly days are interspersed with milder spells. The minimum temperature can drop to a brisk -6°C (22°F), ensuring that warm clothing is essential for outdoor activities. Residents and visitors alike should prepare for frequent rainfalls, as January sees about 60 mm (2.4 inches) of precipitation over approximately 9 days, contributing to the region's lush scenery. With humidity levels averaging 82%, the air retains a crisp freshness, making Asuka a unique winter destination.

January Temperature in Asuka

In Asuka, Japan, January brings a chill of winter, with temperatures ranging from a brisk -6°C (22°F) at night to a comfortable 16°C (61°F) during the day. The average temperature sits around 4°C (40°F), signaling a month where warmth is a welcome reprieve from the cold. As the season progresses into February, a gradual uptick in temperatures can be seen, with lows of -4°C (24°F) and highs reaching 19°C (67°F), hinting at the approach of spring. This trend continues into March, where the mercury begins to rise further, showcasing a transition from the deep winter chill to the promising mildness of early spring, with temperatures climbing from -2°C (29°F) to 21°C (71°F). The gradual shift in January's temperatures not only reflects the changing seasons but also sets the stage for a blossoming spring just around the corner.

January Weather in Asuka: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Asuka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Asuka, January typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec394148576672798275645343
Data source: Temperature data for Asuka generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Asuka

In January, Asuka experiences moderate precipitation, totaling 60 mm (2.4 in) over approximately 9 days. This sets the stage for the gradually increasing rainfall as winter transitions to spring. By February, precipitation rises to 73 mm (2.9 in) despite having just 8 rainy days, suggesting heavier downpours during this month. The trend continues into March where significant rainfall spikes to 128 mm (5.1 in) over 12 days, foreshadowing the lush growth of spring. April and May witness further increases, with precipitation reaching 131 mm (5.1 in) and 157 mm (6.2 in), respectively. This pattern indicates a clear trend towards wetter conditions, especially as the region prepares for the summer months, culminating in a peak rainfall of 290 mm (11.4 in) in July. Overall, January's relatively calm conditions serve as a precursor to the increasingly dynamic weather that characterizes Asuka's climatic evolution throughout the year.

January Precipitation Trends in Asuka

The chart displays monthly precipitation patterns in Asuka, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Asuka, January typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec60731291311571922901741812685170
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Asuka

In January, Asuka, Japan, experiences a relatively high humidity level of 82%, which sets the tone for the winter months. As the seasons transition into February, humidity dips slightly to 79%, but quickly rebounds in March, reaching 74%. This trend of modest fluctuation continues into April, with levels rising again to 76%. By May, humidity soars back to 83%, heralding the onset of the wetter season. As summer arrives, a noticeable upward trend occurs, peaking in July at a sweltering 93%. This high humidity persists through August at 91%, before gradually declining in the autumn months, stabilizing around 87% in September and 85% in October. November and December see a return to a more consistent 83%, reflecting the area's damp climate that remains prevalent throughout the year.

January Average Humidity in Asuka

This chart illustrates the average monthly humidity levels in Asuka, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Asuka is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%74%76%83%87%93%91%87%85%83%83%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Asuka

In January, Asuka, Japan, experiences a moderate UV Index of 4, indicating a relatively safe time for outdoor activities with a burn time of about 30 minutes. As the months progress, UV levels rise sharply, with February spiking to a high index of 6, followed by a dramatic increase to 8 in March, transitioning into the very high category. April and May hit an extreme UV Index of 11, where sun protection becomes crucial, allowing only 10 minutes before burning occurs. The trend continues through the summer months, peaking at 12 in July and August. As autumn arrives, the index gradually declines, easing to 10 in September and dropping back to 6 in November. By December, it returns to 4, closing the year with a reminder of the season’s UV variability. For more on the UV Index in Asuka, check out Asuka UV Index.

Maximum UV Index Levels in Asuka for January

The chart shows the monthly maximum UV Index (UVI) for Asuka in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Asuka typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111111121210764
Data source: Asuka January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

January Sunshine in Asuka

As January dawns in Asuka, Japan, the sun graces the region with 189 hours of radiant light, marking the start of the year on a relatively subdued note. However, as the months progress, a remarkable increase in sunshine hours unfolds. By February, the total rises to 234 hours, signifying the gradual return of longer days. This upward trend continues through the spring, reaching 282 hours in April and peaking at an inspiring 293 hours in May. As summer approaches, the sunshine remains plentiful, but slightly wanes, with July and August showcasing 264 and a striking 312 hours, respectively. As the year winds down, a gentle decline sets in, with December finishing at 226 hours. This annual journey not only highlights the beauty of Asuka's weather but also invites reflection on the cyclical nature of sunlight throughout the seasons.

Monthly Sunshine Duration in Asuka: January Highlighted

The January sunshine duration represents the total number of hours Asuka experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec189h234h267h282h293h270h264h312h247h240h240h226h
Data source: Asuka January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Asuka During January

In Asuka, Japan, the likelihood of sunny weather in January stands at an encouraging 48%, setting a pleasant tone for the start of the year. This figure positions January favorably compared to March and April, with probabilities dropping to 42% and 46%, respectively. Interestingly, the chance of sunshine begins to rise in February to 53% and continues to hold steady in October and November, both also at 53%. As we scroll through the calendar, the likelihood of sunny days diminishes during the warmer months of May to August, signaling a trend where January strikes a balance between winter chills and sunny reprieves, making it a compelling choice for those seeking brighter days amidst the winter months.

Percentage of Sunny Days in January in Asuka

The chart illustrates the percentage of sunny days in Asuka throughout the year, with January highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Asuka experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec48%53%42%46%29%23%33%28%28%52%53%58%
Data source: Asuka January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Asuka in January

In January, Asuka, Japan, enjoys approximately 10 hours of daylight, a balance that is mirrored in February as winter begins to give way to spring. As the days grow longer, March signals the onset of extending sunlight with 11 hours, paving the way for the arrival of spring. By April and May, daylight reaches a pleasant 13 hours, ideal for outdoor activities and blooming landscapes. The peak of summer arrives in June and July, granting a generous 14 hours of daylight, perfect for enjoying the vibrant scenery of Asuka. As the seasons transition towards autumn, daylight diminishes to 13 hours in August and gradually decreases further to 12 hours in September. By October, we drop to 11 hours, and the daylight continues to wane, settling at 10 hours in November and dwindling to 9 hours in December. This rhythmic cycle reflects the beauty of Asuka's changing seasons, inviting residents and visitors alike to embrace the enchanting variations in daylight throughout the year.

Average Daylight Hours in Asuka for January

The chart illustrates the variation in daylight duration in Asuka throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 6m10h 55m11h 58m13h 3m13h 57m14h 25m14h 11m13h 23m12h 21m11h 17m10h 20m9h 52m
Data source: Asuka daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Asuka

In Asuka, Japan, January greets residents with an average wind speed of 2.8 m/s (6 mph), setting the tone for a month that is typically brisk yet refreshing. As winter's chill lingers, the winds begin a subtle dance throughout the year, with February offering a slight increase to 2.9 m/s (7 mph), making it the windiest month early on. However, as spring approaches, the wind speeds dip to a gentler 2.4 m/s (5 mph) in March before stabilizing to around 2.5 m/s (6 mph) during April and May. The trend shifts notably in the summer months, where the winds mellow significantly to 1.6 m/s (4 mph) in June and July, often offering a calm reprieve from the heat. This gentle breeze persists into the fall, with only minor fluctuations, before nudging back up to 2.3 m/s (5 mph) in November and 2.7 m/s (6 mph) in December, hinting at winter's return. Overall, January's winds set a dynamic precedent that varies throughout the seasons, painting a portrait of Asuka's ever-changing climate.

Average January Wind Speed in Asuka

The chart displays monthly wind speed patterns in Asuka, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.8 m/s2.92.42.52.51.61.82.21.81.92.32.7
Data source: Asuka January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Asuka Compares to Other Months

Weather in Asuka varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Asuka, focusing on differences in temperature, rainfall, humidity, and UV levels.

January and February exhibit relatively similar weather patterns, but with some notable differences. In January, temperatures range from a minimum of -6°C (22°F) to a maximum of 16°C (61°F), with an average temperature of 4°C (40°F). The month sees around 60 mm (2.4 in) of precipitation over 9 days, accompanied by high humidity levels of 82%. In contrast, February offers slightly milder conditions, with temperatures ranging from -4°C (24°F) to a maximum of 19°C (67°F) and an average of 5°C (41°F). Precipitation increases to 73 mm (2.9 in) across 8 days, while humidity remains a bit lower at 79%. For more detailed insights into February weather, visit Asuka weather in February.

In January, the weather is notably colder, with temperatures ranging from a minimum of -6°C (22°F) to a maximum of 16°C (61°F), and an average of 4°C (40°F). This month experiences around 60 mm (2.4 in) of precipitation over approximately 9 days, along with a high humidity level of 82%. In contrast, March sees a significant warming trend, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 21°C (71°F) and an average of 9°C (49°F). However, March also brings increased precipitation, totaling 128 mm (5.1 in) over about 12 days, with humidity dropping to 74%. For more detailed insights into March weather, you can check Asuka weather in March.

In January, the weather is quite cold, with temperatures ranging from a minimum of -6°C (22°F) to a maximum of 16°C (61°F), resulting in an average of 4°C (40°F). The month experiences 60 mm (2.4 in) of precipitation over 9 days, coupled with high humidity at 82%. In contrast, April brings a noticeable warming trend, with temperatures ranging from a minimum of 0°C (32°F) to a much warmer maximum of 26°C (79°F) and an average of 14°C (57°F). Precipitation also increases significantly to 131 mm (5.1 in) over 10 days, but humidity drops slightly to 76%. For a more detailed look at April weather, you can visit Asuka weather in April.

January and May present strikingly different weather conditions. In January, temperatures range from a chilly -6°C (22°F) to a mild 16°C (61°F), averaging around 4°C (40°F). The month sees about 60 mm (2.4 in) of precipitation over 9 days, combined with a relatively high humidity of 82%. In contrast, May offers a much warmer climate with temperatures starting at a minimum of 4°C (40°F) and reaching a maximum of 31°C (88°F), averaging out at 19°C (66°F). Precipitation increases to 157 mm (6.2 in) over approximately 10 days, while humidity remains slightly elevated at 83%. For a closer look at the captivating weather in May, you can visit Asuka weather in May.

January and June present contrasting weather conditions. In January, temperatures range from a chilly -6°C (22°F) to a mild 16°C (61°F), with an average of around 4°C (40°F) and relatively low precipitation of 60 mm (2.4 in) over about 9 days. The humidity sits at 82%, contributing to the brisk winter atmosphere. In stark contrast, June boasts much warmer temperatures, with a minimum of 11°C (53°F), an average of 22°C (72°F), and a peak reaching up to 31°C (89°F). This month experiences considerably higher precipitation, totaling 192 mm (7.6 in) across approximately 15 days, and a slight increase in humidity at 87%. For more detailed insights about the June weather, you can visit Asuka weather in June.

January and July present stark contrasts in weather conditions. In January, temperatures typically range from a minimum of -6°C (22°F) to a maximum of 16°C (61°F), with an average of 4°C (40°F). The month sees about 60 mm (2.4 in) of precipitation over 9 days, accompanied by high humidity at 82%, making the cold feel even more biting.

In contrast, July offers a warm and humid experience, with temperatures soaring from a minimum of 19°C (66°F) to highs of 35°C (96°F), averaging around 26°C (80°F). This month is significantly wetter, with 290 mm (11.4 in) of rainfall scattered across 21 days and humidity peaking at 93%. For those curious about Asuka's specific conditions in July, you can find more details here: Asuka weather in July.

January and August in Asuka present starkly contrasting weather conditions. In January, temperatures range from a chilly -6°C (22°F) to a mild maximum of 16°C (61°F), with an average of 4°C (40°F). The month sees limited precipitation, with about 60 mm (2.4 in) falling over 9 days, and humidity levels sitting at a relatively high 82%. In contrast, August boasts much warmer temperatures, with a minimum of 17°C (64°F) and a sweltering maximum of 36°C (98°F), alongside an average temperature of 28°C (83°F). Precipitation significantly increases to 174 mm (6.8 in) over 15 days, and humidity rises to 91%, making it a notably more humid month. For further details, you can check Asuka weather in August.

January and September exhibit distinct weather patterns that reflect the seasonal changes. In January, temperatures vary from a low of -6°C (22°F) to a high of 16°C (61°F), with an average temperature of 4°C (40°F). The month experiences about 60 mm (2.4 in) of precipitation over approximately 9 days and maintains a humidity level of 82%. In contrast, September boasts milder temperatures, ranging from a minimum of 12°C (53°F) to a maximum of 36°C (97°F), with an average temperature of 24°C (75°F). Rainfall is significantly higher at 181 mm (7.1 in), occurring over 16 days, and humidity rises slightly to 87%. For more details on weather specifics, you can check Asuka weather in September.

In January, temperatures in Asuka are quite chilly, with a minimum of -6°C (22°F) and an average of 4°C (40°F), peaking at 16°C (61°F). The month experiences relatively low precipitation, totaling 60 mm (2.4 in) over about 9 days, and the humidity hovers around 82%. In contrast, October brings significantly warmer weather, with temperatures ranging from a minimum of 6°C (43°F) to an average of 18°C (64°F), reaching a maximum of 30°C (87°F). However, October is much wetter, with precipitation totaling 268 mm (10.6 in) spread over approximately 13 days, and humidity slightly increasing to 85%. For more details, visit Asuka weather in October.

In January, the weather is notably colder, with temperatures ranging from a brisk -6°C (22°F) at night to a milder daytime maximum of 16°C (61°F). The month experiences about 60 mm (2.4 in) of precipitation over 9 days, accompanied by a humidity level of 82%. In contrast, November boasts significantly warmer temperatures, with lows of -1°C (30°F) and highs reaching 25°C (76°F), averaging around 12°C (53°F). The precipitation in November is slightly less at 51 mm (2.0 in) over 7 days and a humidity level that remains comparable at 83%. For more details about the November climate, you can check Asuka weather in November.

In comparing January and December weather, January tends to be colder, with average temperatures ranging from a minimum of -6°C (22°F) to a maximum of 16°C (61°F), while December enjoys a milder average temperature, ranging from -3°C (26°F) to a maximum of 22°C (72°F). Additionally, January sees about 60 mm (2.4 inches) of precipitation over 9 days, compared to December's slightly wetter conditions with 70 mm (2.8 inches) of precipitation spread across 8 days. Both months have similar humidity levels, with January at 82% and December slightly higher at 83%. For a more detailed look at December weather in Asuka, you can refer to this link: Asuka weather in December.

Compare Asuka's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Asuka

January in Asuka presents a unique blend of chilly temperatures and high humidity, setting it apart from the milder conditions of other months. With average temperatures hovering around 4°C (40°F), the days can be brisk, especially with minimum lows dipping down to -6°C (22°F). While precipitation occurs on about 9 days, contributing to a total of 60 mm (2.4 in), the overall atmosphere remains crisp, making January a time for bundling up and enjoying the serene beauty of winter. For those interested in more detailed weather patterns, check out Asuka Climate.