January Weather in Toyama, Japan

Last updated: August 21, 2025

January in Toyama, Japan presents a captivating winter landscape characterized by cool temperatures and substantial precipitation. With maximum temperatures reaching 15°C (59°F) and dipping to a chilly -5°C (23°F), the month averages around 2°C (37°F). Visitors can expect a wet atmosphere, as the region experiences about 197 mm (7.8 in) of precipitation over 21 days, contributing to a high humidity level of 80%. This blend of elements creates a unique climate that both locals and travelers must navigate, offering a quintessential winter experience in Toyama.

January Temperature in Toyama

January in Toyama, Japan, marks the heart of winter, where temperatures range from a chilly -5°C (23°F) at night to a mild 15°C (59°F) during the day. With an average of 2°C (37°F), this month presents a stark contrast to the warmer bursts that follow in February, where temperatures dip slightly lower. As winter transitions into spring, March sees a gradual rise, with daytime highs reaching 21°C (71°F), setting the stage for the vibrant warmth of April, when temperatures soar up to 27°C (81°F). This trend continues into May, heralding the arrival of the warmer months as the landscape bursts into life. Overall, January serves as a reminder of Toyama's winter chill, paving the way for the pleasant, increasingly mild temperatures that characterize the coming months.

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

The chart illustrates January temperature patterns in Toyama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Toyama, 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).
JanFebMarAprMayJunJulAugSepOctNovDec363745536369778072625242
Data source: Temperature data for Toyama generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Toyama

In January, Toyama experiences a significant amount of rainfall, with 197 mm (7.8 in) of precipitation spread over 21 days. This robust start to the year highlights the region's propensity for wet winter months, setting the stage for a trend where early months receive higher precipitation compared to later ones. As we transition into February and March, the rainfall slightly decreases to 179 mm (7.0 in) and 167 mm (6.6 in), respectively, with February maintaining 20 days of rain. This pattern showcases a gradual tapering off before a rebound in April. Notably, the precipitation in January is the highest for the first four months, indicating that winter in Toyama is not just chilly but also quite damp, a trend that continues into the spring months before summer brings much higher totals.

January Precipitation Trends in Toyama

The chart displays monthly precipitation patterns in Toyama, 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 Toyama, January typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec198179167179158190357264223216135231
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Toyama

In January, Toyama, Japan experiences a high humidity level of 80%, setting the tone for a wet winter. This month’s moisture is slightly higher than February’s 78%, indicating a gradual decline in humidity as the region transitions from the depths of winter. However, as spring approaches in March, humidity remains elevated at 76%. Interestingly, as temperatures rise in the following months, May and June see a considerable uptick, peaking at 85% and 89%, respectively. The summer months bring even higher levels, with July and August recording a sweltering 93% and 92%. Following this peak, the humidity begins to decline again, tapering off to 84% in September and settling around 81% in October. As the year concludes, humidity returns to a more moderate state in November at 77%, and finally, December wraps up with 79%, reflecting the cyclical nature of Toyama’s humid climate throughout the year.

January Average Humidity in Toyama

This chart illustrates the average monthly humidity levels in Toyama, 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 Toyama is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%76%77%85%89%93%92%84%81%77%79%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Toyama

In January, Toyama experiences a moderate UV Index of 4 with a burn time of 30 minutes—a gentle reminder to take care when outdoors. As winter progresses into February, the UV Index slightly rises to 5, maintaining the same exposure category and burn time. However, with the arrival of March, residents will notice a significant jump as the UV Index escalates to 8, indicating very high exposure levels and a notably reduced burn time of just 15 minutes. This trend of increasing UV intensity continues into April and May, where the index peaks at 10—a clear cue that sun safety is paramount during these spring months. By the time summer hits in June through August, Toyama faces an extreme UV Index of 11, requiring meticulous attention to sun protection as burn time shrinks to a mere 10 minutes. The UV Index begins to decline in September, settling at 10, and further eases by October, with a high level of 7 but a longer burn time of 25 minutes. As the year winds down, November returns to a moderate UV Index of 5, followed by a cooler 3 in December, wrapping up the year with a return to more manageable exposure levels and a consistent burn time of 30 minutes. For more comprehensive UV details, visit Toyama UV Index.

Maximum UV Index Levels in Toyama for January

The chart shows the monthly maximum UV Index (UVI) for Toyama 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 Toyama typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458101011111110753
Data source: Toyama 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 Toyama

In January, Toyama, Japan, basks in a modest 143 hours of sunshine, marking the year's low. As the months progress towards spring, sunlight gradually increases, with February welcoming 204 hours. The arrival of spring in March brings a notable surge to 258 hours, setting the stage for a spectacular April, which enjoys 278 hours. This upward trend continues, peaking in May when the sun graces Toyama for 302 hours. The summer months maintain this brilliance, with June recorded at 291 hours and July slightly dipping to 279 hours, before August revives the count to 300 hours. As autumn approaches, sunshine hours recede, demonstrating a seasonal rhythm: September at 249 hours, followed by October with 228 hours, and a gentle decline into the cooler months of November and December, at 218 and 187 hours, respectively. This captivating cyclic pattern of sunshine encapsulates the charm of Toyama throughout the year.

Monthly Sunshine Duration in Toyama: January Highlighted

The January sunshine duration represents the total number of hours Toyama 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.
JanFebMarAprMayJunJulAugSepOctNovDec143h204h258h278h302h291h279h300h249h228h218h187h
Data source: Toyama January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Toyama During January

In Toyama, Japan, January brings with it a 26% chance of sunny weather, marking it as one of the cloudier months of the year. This likelihood is notably lower compared to the sunnier months of February and March, which enjoy higher chances of sunshine at 37% and 36%, respectively. As winter gives way to spring, the trend shifts; April and November boast almost 48% chances of bright days, highlighting a significant upward trajectory in sunny weather. Conversely, summer months like July and August dip to their own lows, with 24% and 37% chances of sunshine. Overall, January stands out as a month where residents and visitors alike may want to embrace cozy indoor activities, as the likelihood of basking in the sun remains low compared to the seasons that follow.

Percentage of Sunny Days in January in Toyama

The chart illustrates the percentage of sunny days in Toyama 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 Toyama experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec26%37%36%48%32%29%37%24%34%47%48%30%
Data source: Toyama January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Toyama in January

In Toyama, Japan, January ushers in a modest 9 hours of daylight, a stark contrast to the gradual increase that follows. As February unfolds, daylight extends to 10 hours, heralding the first signs of spring. By March, this incremental gain continues, reaching 11 hours, while April enjoys an inviting 13 hours of brightness. As the days warm in May and June, daylight peaks at 14 hours, wrapping the city in a radiant embrace. However, the abundance of light begins to gently wane in July and August, where daylight remains steady at 14 and 13 hours, respectively. As autumn sets in, September offers 12 hours, diminishing to 11 hours in October. The cycle concludes with November and December, both returning to 10 and 9 hours of daylight as the year comes full circle. This rhythmic variation underscores the beauty of seasonal changes in Toyama, with daylight subtly guiding the transitions throughout the year.

Average Daylight Hours in Toyama for January

The chart illustrates the variation in daylight duration in Toyama throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 56m10h 49m11h 57m13h 8m14h 7m14h 37m14h 22m13h 30m12h 23m11h 13m10h 12m9h 40m
Data source: Toyama daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Toyama

In Toyama, Japan, January greets visitors with a gentle average wind speed of 2.9 m/s (7 mph), setting a brisk yet manageable tone for the month. As winter progresses into February, the winds pick up slightly, reaching 3.3 m/s, marking a seasonal peak before they begin to mellow in March. Throughout spring, the winds remain relatively mild, hovering around 2.6 to 2.9 m/s, providing a refreshing backdrop to the blossoming landscapes. Interestingly, July and August experience the calmest winds of the year, with speeds dropping to around 1.7 to 1.9 m/s, as the summer warmth envelops the region. However, as autumn approaches, there’s a gradual increase in wind speeds again, culminating in December's notable 3.0 m/s. This cyclical trend reflects the dynamic interplay between Toyama's changing seasons and its breezy character, inviting both residents and travelers to savor each unique aspect of the climate.

Average January Wind Speed in Toyama

The chart displays monthly wind speed patterns in Toyama, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.9 m/s3.32.62.72.91.81.71.91.92.12.83.0
Data source: Toyama January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Toyama Compares to Other Months

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

January and February exhibit similar weather patterns, though February tends to be slightly milder overall. In January, temperatures range from a minimum of -5°C to a maximum of 15°C, with an average temperature of 2°C. The month experiences significant precipitation, with 197 mm falling over 21 days, contributing to a humidity level of 80%. In contrast, February sees a slightly cooler minimum temperature of -6°C and a higher maximum of 18°C, while the average temperature remains near freezing at 3°C. Precipitation in February is slightly less, measuring 179 mm over 20 days, with humidity dropping slightly to 78%. For more details, you can check Toyama weather in February.

In comparing the weather between January and March, January tends to be colder, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 15°C (59°F) and an average of 2°C (37°F). The month experiences considerable precipitation, totaling 197 mm (7.8 in) over 21 days, alongside high humidity levels of 80%. In contrast, March sees a moderate rise in temperature, with a minimum of -3°C (27°F) and a maximum of 21°C (71°F), yielding an average of 7°C (45°F). Precipitation is slightly lower at 167 mm (6.6 in) but occurs over fewer days, just 17, and with a drop in humidity to 76%. For more detailed insights into the March climate, you can refer to Toyama weather in March.

In January, the weather is considerably colder, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 15°C (59°F) and an average temperature of 2°C (37°F). This month also sees significant precipitation, totaling 197 mm (7.8 in) over 21 days, accompanied by high humidity levels of 80%. In contrast, April brings much milder conditions, with temperatures fluctuating between -3°C (27°F) and 27°C (81°F) and an average of 12°C (53°F). Although precipitation slightly decreases to 179 mm (7.0 in) over 15 days, the humidity is marginally lower at 77%. For more specific insights on April weather in Toyama, you can visit Toyama weather in April.

In January, the weather is notably colder, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 15°C (59°F) and an average of just 2°C (37°F). This month sees significant precipitation, with 197 mm (7.8 in) spread over 21 days, leading to a humidity level of around 80%. In contrast, May ushers in warmer temperatures, with a minimum of 5°C (42°F) and a maximum reaching 30°C (85°F), averaging at 17°C (64°F). While May has slightly less rainfall at 158 mm (6.2 in) over 15 days, the humidity rises to 85%, creating a sense of warmth and vibrancy. For more specifics on the pleasant weather during this month, check out Toyama weather in May.

In January, Toyama experiences a starkly colder climate, with temperatures ranging from a chilly minimum of -5°C (23°F) to a maximum of 15°C (59°F), averaging around 2°C (37°F). The month is characterized by significant precipitation, totaling 197 mm (7.8 in) over 21 days, and a humidity level of 80%. In contrast, June brings a much warmer atmosphere, with temperatures starting at a minimum of 10°C (51°F) and soaring to a maximum of 30°C (87°F), averaging 21°C (69°F). Although the precipitation is slightly less at 190 mm (7.5 in) over 15 days, humidity increases to 89%. This clear shift from winter chill to summer warmth can be explored further in detail at Toyama weather in June.

January and July present starkly contrasting weather conditions. In January, temperatures rarely rise above 15°C (59°F), with an average of only 2°C (37°F) and minimums plummeting to -5°C (23°F). The month is also characterized by high humidity at 80% and considerable precipitation, totaling 197 mm (7.8 in) across 21 days. In contrast, July boasts significantly warmer temperatures, with averages reaching 25°C (78°F) and maximums soaring to 34°C (93°F). Despite a higher total rainfall of 357 mm (14.0 in) over 23 days, July's humidity increases to a sweltering 93%. For more details on summer weather, you can visit Toyama weather in July.

January and August exhibit strikingly different weather patterns. January is characterized by cold temperatures, with a minimum of -5°C (23°F) and an average of 2°C (37°F), making it a chilly month with significant precipitation of 197 mm (7.8 in) over 21 days and humidity around 80%. In contrast, August boasts warm temperatures, ranging from a minimum of 16°C (61°F) to a maximum of 35°C (96°F) and an average of 27°C (80°F). Although August sees a higher total precipitation of 264 mm (10.4 in) across 19 days, the humidity rises to 92%, creating a distinctly muggy atmosphere. For more insights into the summer climate, you can explore Toyama weather in August.

January and September present strikingly different weather patterns. In January, temperatures range from a chilly -5°C (23°F) at their lowest to a milder 15°C (59°F) at their highest, with an average of around 2°C (37°F). This winter month experiences substantial precipitation, totaling 197 mm (7.8 in) over 21 days, along with a humidity level of 80%. In contrast, September welcomes warmer conditions, with minimum temperatures starting at 12°C (54°F) and peaking at 34°C (94°F), averaging a comfortable 22°C (73°F). Although it receives slightly more precipitation at 223 mm (8.8 in) over 17 days, the humidity increases to 84%. For more details, visit Toyama weather in September.

In January, the weather tends to be quite cold, with minimum temperatures dropping to -5°C (23°F) and average highs reaching only 15°C (59°F). This month sees a significant amount of precipitation, with about 197 mm (7.8 in) falling over 21 days, and humidity levels hovering around 80%. In contrast, October brings milder temperatures, with minimums of 8°C (46°F) and average highs climbing to 31°C (87°F). Despite being slightly wetter with 216 mm (8.5 in) over 17 days, the humidity remains similar at 81%. For a closer look at October's weather, you can check Toyama weather in October.

In January, the weather is significantly colder, with minimum temperatures dropping to -5°C (23°F) and an average of only 2°C (37°F), compared to November's milder temperatures, where minimums are around 1°C (34°F) and averages reach 11°C (52°F). January experiences more precipitation, totaling 197 mm (7.8 in) over 21 days, while November sees less rainfall, with 135 mm (5.3 in) across 14 days. Additionally, January's humidity is slightly higher at 80%, compared to November's 77%. For more detailed information about November's climate, you can check Toyama weather in November.

In January, the weather in Toyama is characterized by colder temperatures, with a minimum of -5°C (23°F) and an average of 2°C (37°F), peaking at 15°C (59°F). The month also sees significant precipitation, with 197 mm (7.8 in) over approximately 21 days and a humidity level of 80%. In contrast, December experiences slightly milder conditions, featuring temperatures that range from a minimum of -4°C (24°F) to a maximum of 21°C (71°F), with an average of 5°C (42°F). December is wetter as well, with 231 mm (9.1 in) of precipitation spread across 23 days, while humidity remains comparable at 79%. For a detailed look at the December weather, visit Toyama weather in December.

Compare Toyama's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Toyama

As January unfolds in Toyama, the weather presents a striking contrast to the milder months that precede it. With a chill that grips the atmosphere, temperatures plummet, making it the coldest month of the year. Amidst this crispness, the region is showered with significant precipitation, resulting in a damp and humid environment that enhances the wintery feel. The combination of frequent rain and high humidity creates a unique ambiance, unlike the drier conditions of spring or summer. For those looking to explore the nuances of Toyama's climate, this winter month stands out, showcasing a rhythm all its own. To learn more about what to expect throughout the year, visit Toyama Climate.