January Weather in Minamata, Japan

Last updated: August 21, 2025

In January, Minamata, Japan experiences a diverse range of temperatures, with a maximum reaching up to 20°C (68°F) and a minimum dipping to -4°C (25°F). The average temperature sits comfortably at 7°C (44°F), making for a chilly but moderate winter month. The region sees about 61 mm (2.4 in) of precipitation across 7 days, accompanied by a humidity level of approximately 75%. This blend of cool temperatures and moisture creates a unique atmosphere that characterizes Minamata's January weather, offering a glimpse into the seasonal charm of this coastal town.

January Temperature in Minamata

In January, Minamata, Japan, experiences a chilly embrace of winter, with temperatures ranging from a brisk -4°C (25°F) at night to a mild 20°C (68°F) during the daytime. This month marks the start of a gradual warming trend as the city transitions into spring. The average daily temperature sits at a cool 7°C (44°F), inviting both respite and the promise of warmer days ahead. As February arrives, the temperatures slightly increase, indicating a slow yet steady shift towards milder conditions. Notably, January’s fluctuations hint at Minamata's climate variability, where crisp mornings gradually give way to pleasant afternoons, rather than the extreme cold often felt in other regions. This interplay of temperatures not only characterizes January but also sets the stage for the upcoming warmth as the seasons progress.

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

The chart illustrates January temperature patterns in Minamata, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Minamata, 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).
JanFebMarAprMayJunJulAugSepOctNovDec444654616873808277685647
Data source: Temperature data for Minamata 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 Minamata

In January, Minamata experiences a moderate precipitation total of 61 mm (2.4 in) across about 7 rainy days, signaling the end of the cooler, drier months. This sets the stage for a steady increase in both rainfall and rainy days as the year progresses, with February seeing nearly double the precipitation at 105 mm (4.1 in). The transition into spring brings even wetter conditions, peaking in July with a staggering 465 mm (18.3 in) over 22 days. This upward trend highlights Minamata's distinct seasonal shifts, where the early months are relatively dry, but nature unleashes its full force during the summer, culminating in the very wet and lush months of June and July. As the year winds down, precipitation tapers off again, marking a return to the more tranquil weather patterns of winter by December.

January Precipitation Trends in Minamata

The chart displays monthly precipitation patterns in Minamata, 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 Minamata, January typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec611051491432343434652422281319690
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Minamata

In January, Minamata, Japan experiences a humidity level of 75%, marking the beginning of a gradual upward trend that peaks in the summer months. As the year progresses, humidity consistently rises, reaching its highest point in July at an impressive 92%. This pattern underscores the subtropical climate's influence, with a notable jump in moisture during late spring and throughout summer. After July, humidity slightly decreases but remains elevated, hovering around the 80% mark until the end of the year. Overall, January serves as a gateway into a humid cycle that characterizes much of Minamata’s climate, with a clear progression towards more moisture-laden months ahead.

January Average Humidity in Minamata

This chart illustrates the average monthly humidity levels in Minamata, 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 Minamata is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%71%71%78%84%86%92%91%84%83%81%79%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Minamata

In January, Minamata experiences a moderate UV Index of 5, indicating a safe outdoor exposure time of approximately 30 minutes before burns could occur. This sets a comfortable tone for the beginning of the year, but as winter gives way to spring, the UV levels rise significantly; by February, the index escalates to a high 6, reducing safe exposure to just 25 minutes. A sharp increase is noted in March, where the index reaches 9, categorized as very high, demanding even more cautious sun practices. The real spike occurs from April to August, where the index peaks at an extreme 12 in May and June, with a recommended exposure time of only 10 minutes. As the seasons transition, the UV Index slightly declines in September, registering at 11, and gradually lessens through the fall months, culminating in a low 4 in December. This pattern underscores a critical need for sun protection strategies as Minamata transitions through different UV challenges throughout the year. For detailed insights, refer to the Minamata UV Index.

Maximum UV Index Levels in Minamata for January

The chart shows the monthly maximum UV Index (UVI) for Minamata 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 Minamata typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec569111212121311864
Data source: Minamata 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 Minamata

January in Minamata, Japan, sees 189 hours of sunshine, setting a modest tone for the year ahead. As winter transitions into spring, sunshine steadily increases, with February bringing 236 hours and March peaking at 268 hours. The warmth of April ushers in 286 hours, marking the true arrival of spring's vibrancy. May maintains this momentum with 282 hours before a slight dip occurs in June at 257 hours. Summer shines bright in Minamata, reaching its zenith in August with an impressive 305 hours of sunshine. As the year progresses, daylight begins to recede, evidenced by a gradual decline to 241 hours in November and 224 hours in December. This rhythm of sunshine not only highlights the changing seasons but also encapsulates the engaging contrast between Minamata's gentle winters and its sun-drenched summers.

Monthly Sunshine Duration in Minamata: January Highlighted

The January sunshine duration represents the total number of hours Minamata 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.
JanFebMarAprMayJunJulAugSepOctNovDec189h236h268h286h282h257h274h305h264h262h241h224h
Data source: Minamata January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Minamata During January

In January, Minamata, Japan enjoys a 42% chance of sunny weather, making it one of the brighter months during the winter season. As winter transitions into spring, the likelihood of sunny days slightly increases in February to 45% before experiencing a dip in March at 37%. This trend of variability continues into the spring months, with April and May seeing 39% and 24% chances, respectively. Interestingly, the sunnier months return in the fall, peaking in October at an impressive 62%, while late spring and summer months exhibit much lower probabilities of sunshine, with July dropping to 18%. Overall, January offers a reasonable chance of sunshine, setting a hopeful tone for the year ahead.

Percentage of Sunny Days in January in Minamata

The chart illustrates the percentage of sunny days in Minamata 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 Minamata experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec42%45%37%40%24%20%18%26%33%62%49%51%
Data source: Minamata January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Minamata in January

In Minamata, Japan, January brings about 10 hours of daylight, marking the winter's grip as the sun rises late and sets early. However, as the year transitions into February, daylight begins to slowly increase, reaching 11 hours. This gradual lengthening continues through March, where 11 hours of sunlight encourage the first signs of spring. By April, day length increases to 12 hours, heralding the vibrant blooms of cherry blossoms, and May peaks with a delightful 13 hours of daylight. The trend continues into the summer months, with June and July enjoying the longest days at 14 hours, perfect for outdoor activities and enjoying Japan's natural beauty. As summer fades into autumn, daylight begins to wane again, with hours decreasing to 13 in August, 12 in September, and back down to 11 in October. November and December see a return to 10 hours of daylight, completing the cycle and setting the stage for the next year. The shift from the short, cold days of winter to the long, bright days of summer showcases the seasonal rhythm of life in Minamata.

Average Daylight Hours in Minamata for January

The chart illustrates the variation in daylight duration in Minamata throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 17m11h 1m11h 59m12h 58m13h 47m14h 12m14h13h 16m12h 20m11h 21m10h 30m10h 3m
Data source: Minamata daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Minamata

In Minamata, Japan, January greets you with mild breezes, as the average wind speed rests at 2.7 m/s (6 mph). This gentle start to the year is characteristic of the month, as it tends to maintain a consistent wind speed, mirroring the calm conditions of April, which also averages the same. However, as winter transitions into spring, February experiences a slight uptick to 3.0 m/s (7 mph), before the winds begin to ease again in March at 2.5 m/s (6 mph). Throughout the year, there's a noticeable fluctuation; the wind tapers off significantly by June, dropping to 1.8 m/s (4 mph), only to slowly pick up again as the seasons shift. Notably, December brings a brisk farewell to the year, with a return to 2.8 m/s (6 mph), hinting at the cyclical nature of Minamata's winds, which dance between gentle and invigorating throughout the seasons.

Average January Wind Speed in Minamata

The chart displays monthly wind speed patterns in Minamata, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.7 m/s3.02.52.72.51.82.32.52.02.02.42.8
Data source: Minamata January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Minamata Compares to Other Months

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

January and February show similar temperature ranges, with January's average temperature at 7°C (44°F) and February's slightly higher at 8°C (46°F). Both months experience maximum temperatures reaching 20°C (68°F), but January has a slightly lower minimum temperature of -4°C (25°F) compared to February's -3°C (27°F). In terms of precipitation, February tends to be wetter, with 105 mm (4.1 in) of rain over 10 days, while January receives 61 mm (2.4 in) over just 7 days. Humidity levels are fairly close, with January at 75% and February at 71%. For more detailed weather information, you can explore Minamata weather in February.

In January, temperatures in Minamata range from a chilly minimum of -4°C (25°F) to a comfortable maximum of 20°C (68°F), with an average of 7°C (44°F). The month experiences about 61 mm (2.4 in) of precipitation spread over 7 days, accompanied by a humidity level of 75%.

In contrast, March offers a more temperate atmosphere, with minimum temperatures rising to 1°C (34°F) and maximum temperatures reaching up to 26°C (78°F), resulting in a higher average of 12°C (54°F). However, March is considerably wetter, with precipitation totaling 149 mm (5.9 in) over 14 days, while humidity slightly decreases to 71%. For more details on the weather in March, you can visit Minamata weather in March.

In January, temperatures range from a chilly -4°C (25°F) to a mild 20°C (68°F), with an average of 7°C (44°F). The month typically experiences 61 mm (2.4 in) of precipitation over about 7 days, accompanied by a humidity level of 75%. In contrast, April brings significantly warmer weather, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 27°C (82°F) and an average of 16°C (61°F). Rainfall increases to 143 mm (5.6 in) over 10 days, while the humidity rises slightly to 78%. For more detailed information on weather conditions in April, you can visit Minamata weather in April.

In January, the weather is quite chilly, with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 20°C (68°F), averaging around 7°C (44°F). The month experiences moderate precipitation, totaling 61 mm (2.4 inches) over about 7 days, and the humidity is relatively high at 75%. In contrast, May brings significantly warmer temperatures, with a minimum of 7°C (45°F) rising to a maximum of 30°C (87°F) and an average temperature of 20°C (68°F). However, May is also wetter, receiving 234 mm (9.2 inches) of precipitation over 12 days, and the humidity increases slightly to 84%. For more detailed insights about the weather in May, you can visit Minamata weather in May.

In January, the weather is notably colder with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 20°C (68°F), resulting in an average of 7°C (44°F). Precipitation is relatively light, totaling 61 mm (2.4 in) across 7 days, and the humidity sits at 75%. In contrast, June brings a significant warmth with temperatures starting from 14°C (58°F) and soaring to a maximum of 31°C (89°F), averaging 23°C (74°F). However, June is characterized by much higher precipitation levels, with 342 mm (13.5 in) spread over 18 days, and increased humidity at 86%. For more detailed insights, check out Minamata weather in June.

January and July present vastly contrasting weather conditions. In January, temperatures range from a chilly -4°C (25°F) at night to a mild 20°C (68°F) during the day, with an average of 7°C (44°F). The month sees about 61 mm (2.4 in) of precipitation over approximately 7 days, accompanied by a relative humidity of 75%. In stark contrast, July boasts a much warmer climate, with nighttime lows around 18°C (65°F) and daytime highs soaring up to 35°C (96°F), averaging 27°C (80°F). Rainfall significantly increases to 465 mm (18.3 in), falling over 22 days, and humidity levels rise to a steamy 92%. The drastic differences in temperature, precipitation, and humidity make these two months remarkably distinct. For more information on July weather in Minamata, you can refer to Minamata weather in July.

In January, the weather is significantly cooler with temperatures ranging from a minimum of -4°C (25°F) to a pleasant maximum of 20°C (68°F), averaging around 7°C (44°F). The month experiences relatively low precipitation, totaling 61 mm (2.4 in) over 7 days, with humidity levels at 75%. In contrast, August brings a striking transformation as temperatures soar, with minimums at 21°C (71°F) and highs reaching up to 35°C (96°F), averaging a warm 28°C (82°F). This month is also marked by much higher rainfall, totaling 242 mm (9.5 in) over 17 days, accompanied by increased humidity at 91%. The shift from the brisk winter chill of January to the hot, humid conditions of August highlights the dramatic seasonal changes in the region. For more detailed information, you can visit Minamata weather in August.

January and September offer strikingly contrasting weather conditions. In January, temperatures range from a chilly -4°C (25°F) to a mild 20°C (68°F), with an average of 7°C (44°F). Precipitation is relatively low at 61 mm (2.4 in) over about 7 days, and humidity sits at 75%. In stark contrast, September boasts warmer temperatures, with a minimum of 14°C (57°F), an average of 25°C (77°F), and a maximum reaching up to 34°C (94°F). The month is also much wetter, receiving 228 mm (9.0 in) of rain over 16 days, along with a higher humidity level of 84%. For more details on September weather, visit Minamata weather in September.

In January, the weather tends to be quite chilly, with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 20°C (68°F) and an average of about 7°C (44°F). This month experiences around 61 mm (2.4 in) of precipitation over approximately 7 days, accompanied by a humidity of 75%. In contrast, October warms up significantly, with minimum temperatures of 9°C (48°F) and maximum temperatures peaking at 32°C (89°F), averaging around 20°C (68°F). Additionally, October sees more rainfall, with 131 mm (5.2 in) spread over about 10 days, and slightly higher humidity at 83%. For a detailed look at October weather, check out Minamata weather in October.

January and November present notably different weather patterns. In January, temperatures range from a chilly -4°C (25°F) at their lowest to a mild 20°C (68°F) at the peak, with an average of 7°C (44°F). This month experiences 61 mm (2.4 in) of precipitation over approximately 7 days, accompanied by a humidity level of 75%. In contrast, November boasts a more temperate climate with minimum temperatures around 1°C (34°F) and maximums reaching 25°C (77°F), averaging at 14°C (57°F). Precipitation increases to 96 mm (3.8 in) across 9 days, coupled with a slightly higher humidity of 81%. For specific details on November weather, you can check Minamata weather in November.

In January, temperatures in Minamata range from a chilly -4°C (25°F) at their lowest to a pleasant average of 7°C (44°F), peaking at 20°C (68°F). Precipitation during this month totals 61 mm (2.4 in) over about 7 days, accompanied by a humidity level of 75%. In contrast, December experiences slightly milder conditions, with temperatures that start at a minimum of -1°C (30°F) and an average of 8°C (47°F), reaching a maximum of 24°C (75°F). This month also sees increased precipitation, totaling 90 mm (3.5 in) across approximately 8 rainy days, coupled with higher humidity levels at 79%. For further details on December weather in Minamata, you can visit Minamata weather in December.

Compare Minamata's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Minamata

As the year opens, January in Minamata showcases a distinct chill, contrasting sharply with the warmer months that follow. With temperatures dipping to a minimum of -4°C, this month carries a crispness often absent in spring and summer, while an average of 7°C brings a touch of coolness to daily life. Notably, precipitation is more frequent, with rain falling on about seven days, contributing to a damp atmosphere typical for winter. The 75% humidity enhances the cold, making it essential for residents to bundle up against the elements. For a deeper dive into the yearly fluctuations and trends of Minamata's climate, check out Minamata Climate.