Last updated: August 21, 2025
In Setouchi, Japan during January, the weather presents a cool maritime climate characterized by a maximum temperature of 14°C (57°F) and an average of 6°C (43°F), dipping to a frigid -2°C (29°F) at night. The region experiences approximately 39 mm (1.5 in) of rain over 5 days, contributing to the high humidity levels of 82%. This winter month is marked by crisp air and a blend of sunny spells and occasional showers, making it a unique time to explore the serene landscapes and cultural attractions of Setouchi.
In Setouchi, Japan, January brings a crisp chill, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 14°C (57°F), averaging around 6°C (43°F). As the month progresses into February, the mercury dips slightly lower, with a minimum of -3°C (28°F) but maintains the same average. This frosty period transitions into the embrace of spring by March, when temperatures begin to rise, heralding warmer days ahead with a minimum of 3°C (37°F) and an average of 9°C (49°F). The trend continues into April and May, where pleasant conditions prevail, with average temperatures climbing from 13°C (56°F) to 18°C (65°F), enticing nature into full bloom. By June, the warmth truly sets in, with minima of 15°C (59°F) leading to average highs of 22°C (71°F). The summer months see a marked increase in warmth, peaking in July and August at 32°C (91°F), showcasing Setouchi’s vibrant seasonal cycle. As autumn approaches, the temperatures begin to shift again, culminating in a cozy ambiance during the final months of the year, ultimately leading back to the cool embrace of January's chill.
In January, Setouchi experiences relatively low precipitation, with an average of only 39 mm (or 1.5 inches) that falls over approximately 5 days. This marks the tail end of the drier winter months, setting the stage for the wetter seasons ahead. As the year progresses, precipitation begins to rise sharply, peaking in July with a staggering 303 mm (approximately 11.9 inches) over 16 days. The trend is clear: winter yields to the onslaught of spring and summer rains, culminating in the significant downpours that characterize July and September. Notably, rainfall starts to decline again come autumn, with November and December reverting to lighter, more manageable levels, including 38 mm (1.5 in) in November. This rhythm of wet and dry seasons underscores Setouchi's dynamic climate, where each month brings its own distinctive character.
In January, Setouchi experiences a notably high humidity level of 82%, setting the stage for a winter that feels more damp than dry. As the months progress, humidity begins to dwindle slightly in February to 79%, but this respite is short-lived. By March, humidity levels decrease to 73%, marking the driest point before an upward trend resumes in April. Spring ushers in a rise, peaking at 84% in May, which foreshadows the muggy summer months. From June onward, humidity surges dramatically, reaching a peak of 92% in both July and August. As fall approaches, a gradual decline begins, but levels remain elevated at 87% in September and 85% in October. This consistent pattern showcases Setouchi's unique humidity cycle, characterized by a distinctive blend of moisture that enhances the region's beauty yet challenges daily comfort.
In Setouchi, Japan, January greets residents with a moderate UV Index of 4, which means a burn time of about 30 minutes for unprotected skin. As winter progresses into February, the UV Index rises slightly to 5, maintaining that moderate exposure level. However, the approach of spring signals a notable shift, as March jumps to a very high index of 8, reducing burn time to just 15 minutes. The warm months put sun safety in sharp focus, with April through June experiencing extreme UV levels of 11, demanding vigilance with only 10 minutes of safe exposure. This trend continues through July and August, where the UV Index peaks at 12—the highest of the year. As the season transitions to autumn, the UV Index gradually decreases, with September marking a very high index of 10, followed by October’s high index of 7. Finally, the year wraps up with moderate levels in November and December, both reverting to an index of 4. For more information on UV Index fluctuations throughout the year, check out Setouchi UV Index.
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In Setouchi, Japan, January introduces the year with a modest 177 hours of sunshine, setting a gentle tone for the winter months. As we slip into February, the sun begins to make a stronger appearance, offering 225 hours of brightness. This upward trajectory continues into March and April, where the hours of daylight steadily increase to 259 and 280, respectively. By May, Setouchi basks in a flourishing 295 hours, signaling the arrival of spring and the rejuvenation of nature. However, the sunny momentum reaches its peak in August with an impressive 306 hours, showcasing the region's vibrant summer. Following this peak, a gradual decline occurs, with September and October basking in 248 and 239 hours, hinting at the approach of autumn. November's 234 hours and December's 213 hours close out the year on a softer note, as the days shorten but the charm of Setouchi remains ever-present. This rhythm of sunshine not only marks the changing seasons but also enriches the cultural and natural tapestry of this beautiful region.
In Setouchi, January offers a 50% chance of sunny weather, making it one of the more promising months for sunshine amid the cooler winter season. As we transition into February, this likelihood increases slightly to 54%, suggesting a gradual shift toward brighter days. However, the trend takes a dip in March, with the chance falling to 42%, before stabilizing in the early spring months of April and October, where sunshine probability hovers around 48% and 57%, respectively. Interestingly, the summer months seem less reliable for sun, with the chances dropping to the low twenties in June and July. Overall, January presents a solid opportunity for catching some sun before the weather fluctuates in the following spring and summer months, inviting visitors to embrace both the beauty and unpredictability of Setouchi's climate.
In Setouchi, Japan, the daylight duration in January marks the beginning of a gradual transition into longer days. With 10 hours of daylight, January mirrors February's light, but as spring approaches, daylight steadily increases to 11 hours in March and reaches 13 hours by April and May. This trend continues into summer, peaking at 14 hours in June and July, offering ample sunlight for outdoor activities. As August fades into September, daylight begins to decrease, settling at 12 hours. The descent continues into autumn and winter, resulting in 11 hours in October and a retreat to 10 hours in November, before dropping to 9 hours in December. This cyclical pattern highlights Setouchi's remarkable shift in daylight throughout the year, reflecting the changing seasons and the natural rhythm of life in this picturesque region.
In Setouchi, Japan, January brings a brisk average wind speed of 4.9 m/s (11 mph), marking it as one of the windiest months of the year. This invigorating breeze carries into February, where the winds slightly taper off to 4.8 m/s but remain steady. As spring approaches, March through May experiences a gentle decline, with wind speeds stabilizing around 4.0 m/s (9 mph). The summer months reveal a notable trend: as temperatures rise, wind speeds dip further, reaching a calm 2.9 m/s (6 mph) in July. Interestingly, the winds begin to regain strength in the fall, with November's gusts bouncing back to 4.3 m/s (10 mph), culminating with December's peak at 5.1 m/s (11 mph). Overall, January's winds herald a seasonal cycle, where the colder months favor crisp breezes, while summer delights in a more tranquil atmosphere.
Weather in Setouchi varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Setouchi, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between January and February, we see some subtle differences. January experiences a minimum temperature of -2°C (29°F) and an average of 6°C (43°F), with a maximum reaching 14°C (57°F). Precipitation is relatively low at 39 mm (1.5 in) over 5 days, accompanied by high humidity at 82%. In contrast, February sees a slight dip in minimum temperature to -3°C (28°F) but remains consistent with the average at 6°C (43°F) and a higher maximum of 15°C (60°F). However, February is generally wetter, with 55 mm (2.2 in) of precipitation over 6 days and slightly lower humidity at 79%. For more detailed insights, you can visit Setouchi weather in February.
In January, the weather is typically colder, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 14°C (57°F) and an average of 6°C (43°F). The month sees relatively low precipitation of 39 mm (1.5 in) over just 5 days, accompanied by a higher humidity level of 82%. In contrast, March experiences milder temperatures with a minimum of 3°C (37°F) and a maximum of 18°C (64°F), averaging around 9°C (49°F). However, it is wetter than January, receiving 108 mm (4.2 in) of rainfall across 10 days and a more moderate humidity of 73%. For more detailed insights into the weather conditions in March, you can visit Setouchi weather in March.
In January, temperatures are quite chilly, with minimums dipping to -2°C (29°F) and a modest average of 6°C (43°F), peaking at around 14°C (57°F). Precipitation is relatively low at 39 mm (1.5 in) over about 5 days, accompanied by high humidity at 82%. In contrast, April brings significantly warmer weather, with temperatures starting at a minimum of 4°C (40°F) and averaging 13°C (56°F), reaching a maximum of 21°C (71°F). However, April also sees an increase in rainfall, totaling 130 mm (5.1 in) over 9 days, although the humidity drops to a more comfortable 74%. For more details on April weather in the region, check Setouchi weather in April.
In January, the weather is quite chilly, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 14°C (57°F), making it a stark contrast to the warmth found in May, where temperatures typically range from a minimum of 10°C (50°F) to a pleasant maximum of 25°C (77°F). January experiences less precipitation at 39 mm (1.5 in) over five days, while May sees a significant increase with 131 mm (5.2 in) spread over nine days. Humidity levels are slightly higher in May at 84%, compared to January's 82%, contributing to a more comfortable and vibrant atmosphere as spring takes hold. For more detailed insights into this seasonal change, you can explore Setouchi weather in May.
January and June present striking contrasts in weather patterns. In January, temperatures range from a minimum of -2°C (29°F) to a maximum of 14°C (57°F), with an average of 6°C (43°F). The month experiences relatively low precipitation, totaling 39 mm (1.5 in) over just 5 days, accompanied by high humidity at 82%. In contrast, June brings warmer temperatures with a minimum of 15°C (59°F), an average of 22°C (71°F), and a maximum of 27°C (80°F). However, it is also much wetter, receiving 164 mm (6.5 in) of rain over 12 days, and humidity increases to 86%. For those interested in more details, you can find additional information at Setouchi weather in June.
January and July present stark contrasts in weather conditions. In January, temperatures range from a chilly minimum of -2°C (29°F) to a mild maximum of 14°C (57°F), with an average of 6°C (43°F). The month typically sees 39 mm (1.5 in) of precipitation over about 5 days, accompanied by relatively high humidity at 82%. In contrast, July brings much warmer temperatures, with a minimum of 20°C (69°F) and a maximum of 32°C (91°F), averaging 26°C (78°F). However, it also experiences significantly higher rainfall, reaching 303 mm (11.9 in) over roughly 16 days, and humidity rises to 92%. For more details about July weather specifics, you can check this link: Setouchi weather in July.
In January, the weather is quite cool, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 14°C (57°F) and an average of 6°C (43°F). This month experiences about 39 mm (1.5 in) of precipitation over approximately 5 days, accompanied by a humidity level of 82%. In contrast, August brings significantly warmer temperatures, with a minimum of 21°C (69°F), an average of 28°C (82°F), and a peak of 32°C (91°F). However, it is also wetter, with 173 mm (6.8 in) of rainfall spread across around 12 days and a higher humidity of 92%. For more details on the climate, you can check Setouchi weather in August.
January and September exhibit stark differences in weather patterns. January experiences much cooler temperatures, with averages around 6°C (43°F) and a maximum of 14°C (57°F), contrasted with September’s warmer averages of 24°C (76°F) and highs reaching 31°C (89°F). Additionally, January sees relatively low precipitation at 39 mm (1.5 in) over just 5 days, while September is significantly wetter, with 222 mm (8.7 in) of rain spread over 13 days. The humidity levels also rise slightly from 82% in January to 87% in September, indicating a more humid climate as summer transitions to autumn. For those interested in a detailed look at September weather, you can visit Setouchi weather in September.
In January, the weather is significantly cooler, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 14°C (57°F), and an average of 6°C (43°F). The month sees about 39 mm (1.5 in) of precipitation over approximately 5 days, accompanied by a relatively high humidity level of 82%. In contrast, October boasts much warmer temperatures, with a minimum of 12°C (54°F) and a maximum reaching 27°C (82°F), averaging around 19°C (67°F). However, it experiences much higher precipitation, totaling 211 mm (8.3 in) over 11 days, and a slightly higher humidity of 85%. For more details, you can visit Setouchi weather in October.
January and November exhibit distinct differences in weather patterns. January tends to be colder, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 14°C (57°F), while November is milder, with temperatures starting at 6°C (43°F) and peaking at 22°C (71°F). Both months experience similar precipitation levels of around 39 mm (1.5 in), occurring on about five days; however, November's weather is slightly more humid with an average humidity of 84%, compared to January's 82%. For more detailed information about November weather, you can visit Setouchi weather in November.
In comparing the weather of January and December, January generally experiences cooler temperatures, with an average of 6°C (43°F) compared to December's warmer average of 9°C (48°F). The minimum temperatures in January can dip to -2°C (29°F), while December typically sees a milder minimum of 1°C (33°F). Additionally, January has less precipitation, with 39 mm (1.5 in) across 5 days, compared to December’s 52 mm (2.0 in) over 6 days. Despite these differences, both months maintain a consistent humidity level of 82%. For more details on December weather, you can visit Setouchi weather in December.
January in Setouchi offers a unique blend of cool temperatures and moderate humidity that sets it apart from other months. With maximum temperatures hovering around 14°C (57°F) and lows dipping to -2°C (29°F), this month is characterized by a crisp chill that invites cozy moments indoors. While it sees about 39 mm (1.5 in) of precipitation over five days, this is relatively low compared to the heavier rains of spring and summer. The 82% humidity adds a lingering freshness to the air, making January an ideal time for those who appreciate a quieter, more serene atmosphere. For more detailed insights into the weather trends year-round, be sure to check out Setouchi Climate.