Last updated: August 21, 2025
In Onomichi, Japan, January brings a cool climate with a maximum temperature reaching 15°C (59°F) and an average of 6°C (43°F). While the chill can dip to a minimum of -5°C (24°F), residents and visitors can expect a moderate precipitation amount of 40 mm (1.6 in) over approximately 5 days. The air is often characterized by high humidity levels at 82%, providing a damp yet refreshing atmosphere that embodies the beauty of winter in this scenic coastal town. Perfect for enjoying the tranquil landscapes or exploring the rich cultural heritage, January in Onomichi offers a unique experience for those who embrace the cold.
In January, Onomichi, Japan, experiences chilly temperatures as winter takes hold, with minimums dipping to -5°C (24°F) and a cool average of 6°C (43°F). Daily highs can reach a mild 15°C (59°F), providing brief respites from the cold. Compared to February, which shows a slight warming trend with temperatures trailing off to -3°C (26°F) for minimums and 6°C (44°F) on average, January stands out as one of the coldest months. As the months progress, temperatures rise steadily; by March, the average climbs to 10°C (51°F), marking the transition to spring. Overall, January is marked by its crispness, setting the stage for a gradual increase in warmth as winter wanes and the more temperate months beckon.
In January, Onomichi experiences a relatively tranquil start to the year, with an average precipitation of 40 mm (1.6 in) spread over just 5 days. This sets the stage for a gradual increase in rainfall as winter transitions into spring; February sees a slight uptick to 54 mm (2.1 in) over 6 days. By March, precipitation rises significantly to 93 mm (3.7 in) across 9 days, signaling the approach of the wetter months. The pattern continues into April and May, with rainfall peaking in the summer months, particularly in July with a striking 314 mm (12.4 in). As the seasons progress, those early January drizzles are a mere prelude to Onomichi's more intense rainy period, underscoring a clear trend of increasing moisture as the year unfolds.
In Onomichi, Japan, January ushers in a notable humidity level of 82%, setting the tone for a winter characterized by a touch of moisture in the air. As the year progresses into February, humidity slightly dips to 79%, marking the beginning of a gradual decline until March, where it reaches 73%—the lowest for the first quarter. However, as spring approaches in April, humidity levels stabilize around 74%, only to surge back up with the onset of warmer months. By May, humidity rises sharply to 84%, peaking at a steamy 92% during the summer months of July and August. As autumn rolls in, there's a gentle decline, with humidity tapering off to 87% in September, before settling at 82% again by December. Overall, the humidity in Onomichi displays a rhythmic pattern, oscillating between comfortable and humid conditions across the seasons, painting a vivid picture of the region's climate dynamics.
In January, Onomichi experiences a moderate UV Index of 4, suggesting a burn time of about 30 minutes under the sun. This level of UV radiation calls for some caution, especially for those planning outdoor activities. As the months progress, the UV Index rises steadily from February's 5 to a striking 8 in March, marking a transition to a very high exposure category. By the time we reach April and May, the UV levels peak at 10 and 11 respectively, placing them in the extreme category with a burn time shrinking significantly to just 10 minutes. It's clear that as winter gives way to spring and then summer, the intensity of UV radiation in Onomichi escalates, necessitating increased sun protection measures. For further details on the UV Index throughout the year, visit Onomichi UV Index.
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In Onomichi, Japan, the warmth of January sunshine offers a promising start to the year with 184 hours of sunlight, laying the foundation for a gradual increase as winter transitions into spring. As the months progress, February brings a notable uptick to 232 hours, followed by an even more robust 267 hours in March, encouraging blossoming life and vibrant colors. April and May continue this upward trajectory, peaking at 305 hours of sunlight, showcasing a rich tapestry of light and warmth. The summer months, while slightly fluctuating with 292 hours in June and 284 hours in both July and August, still provide ample sunshine for outdoor exploration. As autumn approaches, the sunlight gently tapers to 261 hours in September, before settling into the softer glow of October and November. This rhythmic dance of light encapsulates the enchanting seasonal transition in Onomichi, making it a captivating destination year-round.
In Onomichi, Japan, January greets visitors with a 47% chance of sunny weather, making it a generally pleasant winter month. While this percentage is lower than the sunnier spells found in October (57%) and December (61%), it reflects a promising trend that emerges in the early months of the year. Interestingly, February sees a slight uptick in sunshine likelihood at 54%, hinting at a gradual transition towards brighter days. However, as spring approaches, March's likelihood dips to 40%, suggesting that the month is less favorable for sun-seekers. This pattern showcases the charming unpredictability of Onomichi’s weather, where early winter often brings more sunshine than one might expect.
In Onomichi, Japan, January greets residents with 10 hours of daylight, setting the stage for a gradual increase throughout the spring. As February maintains the same daylight duration, anticipation builds with the arrival of March, which brings an additional hour, culminating in 11 hours. The days lengthen significantly in April and May, each offering 13 hours of sunlight, paving the way for the zenith of summer in June and July, where daylight peaks at 14 hours. Following this, a gentle decline begins in August, with daylight decreasing to 13 hours, and continues in the autumn months, eventually reaching 10 hours in November, and tapering down to 9 hours by December. This rhythmic ebb and flow of daylight beautifully marks the seasons, inviting Onomichi's inhabitants to embrace both long sunlit days and cozy evenings.
In Onomichi, Japan, January welcomes a gentle average wind speed of 3.4 m/s (8 mph), setting the stage for a crisp winter atmosphere. As the year unfolds into February, the winds pick up slightly to 3.8 m/s (8 mph), offering a refreshing chill that invigorates the landscape. However, by March, the breeze settles down to 3.0 m/s (7 mph), hinting at the impending arrival of spring. This trend of diminishing wind speeds continues through the spring months of April and May, where it drops to 2.9 m/s (6-7 mph), reflecting the calmer demeanor of the warming season. June brings the calmest conditions with an average of 2.0 m/s (4 mph), indicating a serene shift in weather patterns. The summer months see a slight revival as winds hover around 2.4 m/s (5 mph), before gradually rising again in autumn to 2.9 m/s (6 mph) in November. December sees a notable return to a brisker pace with 3.5 m/s (8 mph), reminding us that winter is just around the corner once more. Overall, these variations reveal a distinct seasonal rhythm in Onomichi's winds, from the invigorating gusts of winter to the tranquil breezes of summer.
Weather in Onomichi varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Onomichi, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February exhibit similar average temperatures, with January having a minimum of -5°C (24°F) and an average of 6°C (43°F), while February shows a slightly milder minimum of -3°C (26°F) and the same average of 6°C (44°F). However, February experiences warmer maximum temperatures, reaching up to 20°C (69°F) compared to January's peak of 15°C (59°F). Precipitation also increases from 40 mm (1.6 in) over 5 days in January to 54 mm (2.1 in) over 6 days in February, although humidity remains quite high in both months, with January at 82% and February at 79%. For more detailed information, check Onomichi weather in February.
January and March present distinctly different weather patterns. In January, temperatures range from a chilly -5°C (24°F) at night to a mild 15°C (59°F) during the day, with an average of 6°C (43°F). The month experiences around 40 mm (1.6 in) of precipitation over about 5 days and a relatively high humidity level of 82%. In contrast, March sees a noticeable warming trend, with minimum temperatures at 0°C (32°F) and maximums reaching 23°C (73°F), averaging 10°C (51°F). Precipitation increases to 93 mm (3.7 in) spread over 9 days, but humidity decreases to a more comfortable 73%. For a detailed look at the weather specifics, check out Onomichi weather in March.
In January, the weather is quite chilly with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 15°C (59°F), and an average temperature of 6°C (43°F). The month experiences moderate precipitation of 40 mm (1.6 in) over about 5 days and high humidity at 82%. In contrast, April brings a significant shift in temperature, with a minimum of 2°C (36°F), an average of 15°C (59°F), and a warm maximum reaching 26°C (79°F). This month sees a higher total precipitation of 117 mm (4.6 in) spread over 8 days, but the humidity is notably lower at 74%. For a detailed look at the weather during April, you can visit Onomichi weather in April.
In January, temperatures in Onomichi range from a chilly -5°C (24°F) at their lowest to a maximum of 15°C (59°F), with an average of around 6°C (43°F). During this month, the area experiences about 40 mm (1.6 in) of precipitation over approximately 5 days, and humidity hovers around 82%. In stark contrast, May brings significantly warmer weather, with minimum temperatures of 7°C (46°F), average highs of 20°C (68°F), and peaks reaching as high as 31°C (89°F). This month sees increased precipitation at 107 mm (4.2 in) over 9 days, accompanied by a slightly higher humidity level of 84%. For more details on the weather in May, check out Onomichi weather in May.
January weather presents a stark contrast to that of June. During January, temperatures range from a chilly minimum of -5°C (24°F) to a mild maximum of 15°C (59°F), with an average of 6°C (43°F). The month experiences about 40 mm (1.6 in) of precipitation over approximately 5 days, accompanied by a humidity level of 82%. In contrast, June boasts significantly warmer temperatures, with a minimum of 13°C (56°F), an average of 23°C (74°F), and a high of 32°C (90°F). However, it is also wetter, receiving 149 mm (5.9 in) of precipitation over about 12 days and a humidity of 86%. This shift from the cold and dry January to the warm and humid June highlights the transition from winter to summer. For more information, you can check Onomichi weather in June.
January and July present stark contrasts in weather conditions. In January, temperatures range from a chilly -5°C (24°F) at the minimum to a mild 15°C (59°F) at the maximum, with an average of 6°C (43°F). Precipitation is relatively low, totaling 40 mm (1.6 in) over 5 days, and humidity sits at a comfortable 82%. In contrast, July experiences a much warmer climate, with minimum temperatures starting at 19°C (66°F) and peaking at a sweltering 38°C (100°F), averaging 27°C (81°F). Moreover, the month sees a substantial increase in precipitation, reaching 314 mm (12.4 in) over 17 days, accompanied by higher humidity levels at 92%. For more details on July weather, visit Onomichi weather in July.
January and August present starkly contrasting weather patterns. In January, temperatures range from a chilly minimum of -5°C (24°F) to a mild maximum of 15°C (59°F), with an average of 6°C (43°F). The month receives around 40 mm (1.6 in) of precipitation over approximately 5 days, accompanied by high humidity at 82%. In contrast, August experiences much warmer temperatures, with a minimum of 20°C (68°F) and a maximum soaring up to 37°C (99°F), averaging 29°C (85°F). Additionally, it is considerably wetter, accumulating 166 mm (6.5 in) of rainfall over about 11 days, and with humidity climbing to 92%. For a closer look at August weather specifics in this area, you can visit Onomichi weather in August.
January and September exhibit strikingly different weather patterns. In January, temperatures range from a chilly -5°C (24°F) at night to a mild 15°C (59°F) during the day, with an average of around 6°C (43°F). The month sees about 40 mm (1.6 in) of precipitation spread over five days, alongside relatively high humidity levels of 82%. In contrast, September brings significantly warmer conditions, with minimum temperatures of 14°C (58°F) and daytime highs soaring up to 35°C (95°F), giving an average temperature of 25°C (77°F). Additionally, September experiences much heavier rainfall, totaling 174 mm (6.9 in) over 12 days and a slight increase in humidity to 87%. For more specific details, you can reference Onomichi weather in September.
January and October present quite contrasting weather patterns. In January, temperatures range from a chilly minimum of -5°C (24°F) to a mild maximum of 15°C (59°F), with an average of 6°C (43°F). The month typically sees around 40 mm (1.6 in) of precipitation over five days and a humidity level of 82%. In contrast, October boasts much warmer temperatures, with a minimum of 8°C (46°F) and a high of 32°C (89°F), averaging 19°C (67°F). This month experiences significantly more rainfall, totaling 164 mm (6.4 in) across nine days, while humidity remains slightly elevated at 85%. For more details on October weather, you can check Onomichi weather in October.
In January, the weather in Onomichi is notably colder, with average temperatures ranging from a minimum of -5°C (24°F) to a maximum of 15°C (59°F), compared to milder November, which has temperatures fluctuating from a minimum of 1°C (35°F) to a maximum of 24°C (75°F). January experiences slightly more precipitation at 40 mm (1.6 in) over 5 days, while November sees less rainfall at 31 mm (1.2 in) across 4 days. Humidity levels are similar in both months, with January at 82% and November slightly higher at 84%, contributing to a crisp but damp atmosphere in the winter. For more details on November weather specifically, you can refer to Onomichi weather in November.
In comparison to January, December typically enjoys slightly milder temperatures, with an average temperature of 8°C (46°F) compared to January's 6°C (43°F). December features maximum temperatures reaching up to 20°C (69°F), while January peaks at a cooler 15°C (59°F). Both months experience similar humidity levels at 82%, but December tends to have a bit more precipitation, with 45 mm (1.8 in) falling over 6 days, compared to January's 40 mm (1.6 in) over 5 days. For more specific details about December weather in the area, you can check Onomichi weather in December.
January in Onomichi brings a distinct chill compared to the milder months ahead. With average temperatures hovering around 6°C (43°F), this month stands out for its brisk air and occasional frosty mornings, where temperatures can dip as low as -5°C (24°F). Precipitation is relatively modest, with about 40 mm (1.6 in) falling over just 5 days, adding a subtle crispness to the atmosphere amidst the 82% humidity. This unique blend of cool weather and moderate rain sets January apart, creating an ideal time for cozy indoor activities and enjoying the serene beauty of winter in the region. For a deeper dive into what to expect year-round, visit Onomichi Climate.