Last updated: August 21, 2025
January in Izu, Japan offers a diverse weather experience characterized by a maximum temperature of 18°C (64°F) and a minimum of -2°C (29°F), resulting in an average temperature of about 7°C (44°F). This month sees a moderate precipitation amount of 68 mm (2.7 in) spread over approximately 5 days, contributing to a humidity level of 76%. Visitors can expect a chilly atmosphere complemented by intermittent rain, making it an intriguing time to explore Izu's natural beauty and cultural richness, all while dressing warmly to embrace the seasonal cool.
In Izu, Japan, January temperatures can be quite varied, presenting a captivating mix of chilly, crisp air and milder sunny days. The month kicks off with minimum temperatures dipping to -2°C (29°F), while daytime averages hover around a cool 7°C (44°F). As the days progress, residents and visitors can expect to enjoy maximum temperatures reaching up to 18°C (64°F), constantly reminding them of the warmth to come. This trend of gradual warming continues into February, which sees slight increases across the board. Overall, January marks the start of a climatic transition, hinting at the upcoming spring warmth while still retaining the chill of winter.
In Izu, Japan, January brings a modest precipitation total of 68 mm (2.7 in) over approximately five days, marking the month as relatively dry compared to the rest of the year. As winter transitions to spring, February sees a slight uptick in rainfall, reaching 83 mm (3.2 in) across eight days. This pattern continues, with notable increases in March, where precipitation skyrockets to 196 mm (7.7 in) over 13 days, signaling the arrival of the wetter season. This trend escalates dramatically through the summer months, peaking in July with 326 mm (12.8 in), distributed over 19 days. By contrast, the autumn months exhibit a decrease in rainfall, culminating in 94 mm (3.7 in) in November. Overall, January's precipitation lays the groundwork for the more significant rainfall that characterizes the upcoming spring and summer months, highlighting Izu's evolving climatic rhythm.
In Izu, Japan, January boasts a humidity level of 76%, setting the tone for a year characterized by a gradual rise in moisture. Following January, February sees a slight dip to 74%, but humidity steadily climbs as spring approaches, peaking in June at a high 88%. The summer months bring even higher levels, with July reaching a staggering 93%, ensuring that visitors feel the warmth enveloped in moisture. As the seasons shift towards autumn, humidity levels start to decline, though they remain relatively high, hovering around 80% in November. This year-round trend not only highlights Izu's subtropical charm but also creates a lush environment, making it a captivating destination for those who appreciate a humid climate.
In January, Izu experiences a moderate UV Index of 4, meaning that outdoor enthusiasts can enjoy the crisp winter air with a burn time of about 30 minutes. However, as the month progresses into February, the UV Index climbs to 6, classified as high, requiring a bit more sun protection with a reduced burn time of 25 minutes. This trend of increasing UV exposure continues into the spring months, peaking dramatically in May and June with extreme levels of 11, where vigilant precautions are essential and only about 10 minutes of unprotected sun exposure is safe. The summer months see high UV activity, reaching a staggering 12 in July, before winding down with a noticeable drop towards autumn. For anyone venturing outdoors, it’s crucial to stay informed about the UV Index changes throughout the year. For detailed information, visit Izu UV Index.
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In Izu, Japan, January starts the year with a modest 189 hours of sunshine, setting a gradual pace for the months to follow. As winter transitions into spring, sunshine hours steadily increase, peaking in April at 260 hours, signaling the arrival of warmer days. May continues this trend, boasting 282 hours of bright skies, before summer takes center stage in August with an impressive 285 hours of sunshine. Following this peak, the sunshine hours taper off slightly through the autumn months, with October experiencing 201 hours. Overall, Izu’s weather pattern showcases a delightful progression of increasing sunshine, creating an enticing allure for travelers seeking both warmth and beauty as the seasons unfold.
In January, the likelihood of experiencing sunny weather in Izu, Japan is relatively promising, with a 59% chance of sunshine. This makes January one of the more favorable months for basking in the sun compared to the following months, particularly February, which sees an uptick to 66%. However, as spring approaches, the chances begin to dip, with March plunging to 39% and further into the rainy season, where May and June drop substantially to 25% and 22%, respectively. Interestingly, November and December offer a return to sunnier days, with likelihoods of 62% and 72%. This trend highlights that while January provides a solid opportunity for sunny weather, the subsequent months lead to a significant decline, before the sun reemerges later in the year.
In Izu, Japan, January greets visitors with approximately 10 hours of daylight, a consistent start that continues through February. As spring approaches, daylight begins to extend, with March offering 11 hours, transitioning into a more vibrant April that boasts 13 hours of sunlight. This growth peaks in May and June, where daylight stretches to 14 hours, providing ample opportunity for exploration and outdoor activities. As summer wanes into August, daylight begins its gradual descent, slightly decreasing to 13 hours. By fall, September sees a drop to 12 hours, and as the year closes, daylight dwindles again to 10 hours in November and 9 hours in December. Overall, Izu showcases a dynamic rhythm to its daylight, inviting residents and visitors to enjoy longer, sunlit days as the year unfolds.
January in Izu, Japan, welcomes visitors with a gentle breeze, as the average wind speed reaches 3.3 m/s (7 mph). This marks a subtle peak in the wind patterns for the winter months, setting the stage for February's slight increase to 3.7 m/s (8 mph) before it begins to taper off in March. As spring approaches, the winds soften, averaging 2.6 m/s (6 mph) in March and continuing with light breezes through April and June. The summer months see a consistent calm, with wind speeds hovering around 2.0 m/s (4-5 mph), providing a serene ambiance perfect for leisurely coastal activities. Late autumn brings a revival, with November and December reintroducing speeds of 3.1 m/s (7 mph) and 3.3 m/s (7 mph), reminiscent of January's mild start, ensuring that the winds in Izu remain a gentle companion to the stunning landscape throughout the year.
Weather in Izu varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Izu, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February in Izu present a gradual transition in weather patterns. January experiences temperatures ranging from a minimum of -2°C (29°F) to a maximum of 18°C (64°F), with an average temperature of 7°C (44°F). The month sees around 68 mm (2.7 in) of precipitation over 5 days, along with a relatively high humidity level of 76%.
In contrast, February slightly warms up, with temperatures varying from a minimum of -1°C (30°F) to a maximum of 19°C (67°F), and an average temperature of 7°C (45°F). However, this month brings increased precipitation, totaling 83 mm (3.2 in) over 8 days, while humidity slightly decreases to 74%. For a detailed look at February weather, check out Izu weather in February.
In January, the weather is typically colder, with average temperatures ranging from a minimum of -2°C (29°F) to a maximum of 18°C (64°F). The month sees about 68 mm (2.7 in) of precipitation over roughly 5 days, coupled with a humidity level of 76%. By March, however, conditions begin to warm, featuring an average temperature that rises to between 1°C (34°F) and 22°C (72°F). This month experiences significantly higher precipitation, totaling 196 mm (7.7 in) over about 13 days, while humidity decreases slightly to 70%. For more details on March weather in Izu, feel free to explore Izu weather in March.
January and April present distinct contrasts in weather. In January, temperatures range from a chilly minimum of -2°C (29°F) to a mild maximum of 18°C (64°F), with an average of 7°C (44°F). The month sees about 68 mm (2.7 in) of precipitation over approximately 5 days, accompanied by a relatively high humidity level of 76%. In contrast, April offers a warmer climate, featuring temperatures that span from a minimum of 3°C (38°F) to a pleasant maximum of 24°C (76°F), with an average temperature of 14°C (57°F). However, this month experiences increased rainfall, totaling 168 mm (6.6 in) over around 11 days, while humidity remains similar at 74%. For more detailed information about the weather in April, you can visit Izu 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 18°C (64°F) and an average of 7°C (44°F). This month experiences around 68 mm (2.7 in) of precipitation, spread over about 5 days, with humidity hovering around 76%. In contrast, May sees a significant transition, with temperatures rising to a minimum of 9°C (48°F), an average of 18°C (65°F), and a maximum of 28°C (82°F). However, May is also wetter, receiving 194 mm (7.6 in) of precipitation over approximately 12 days, accompanied by slightly higher humidity at 81%. For a deeper insight into the conditions, you can explore Izu weather in May.
January and June present significantly different weather conditions. In January, temperatures are quite cool, with lows around -2°C (29°F) and an average of 7°C (44°F), while the maximum reaches a mild 18°C (64°F). The month sees approximately 68 mm (2.7 in) of precipitation over 5 days, accompanied by a humidity level of 76%. Conversely, June experiences much warmer temperatures, with minimums around 15°C (59°F) and averages of 21°C (71°F), peaking at 29°C (85°F). This month is also much wetter, with a total precipitation of 263 mm (10.3 in) over 17 days and higher humidity levels at 88%. Overall, June is warmer and wetter compared to the chillier and drier January. For more details, check Izu weather in June.
January and July present sharply contrasting weather conditions. In January, temperatures range from a chilly minimum of -2°C (29°F) to a comfortable maximum of 18°C (64°F), with an average of 7°C (44°F). The month experiences moderate precipitation of 68 mm (2.7 in) over about 5 days, accompanied by a relatively high humidity of 76%. In stark contrast, July boasts much warmer temperatures, with a minimum of 18°C (65°F) and a maximum soaring up to 33°C (92°F), while the average sits at 25°C (77°F). This summer month sees a significant increase in rainfall, totaling 326 mm (12.8 in) across 19 days, along with increased humidity levels reaching 93%. For further details, you can check Izu weather in July.
January and August present strikingly contrasting weather conditions. In January, temperatures range from a chilly minimum of -2°C (29°F) to a maximum of 18°C (64°F), with an average of 7°C (44°F). This month typically sees about 68 mm (2.7 in) of precipitation over five days, accompanied by a moderate humidity level of 76%. In sharp contrast, August boasts much warmer temperatures, with a minimum of 20°C (68°F) and a maximum reaching 34°C (94°F), averaging around 27°C (81°F). Rainfall in August is significantly higher, totaling 176 mm (6.9 in) over 17 days, and humidity levels soar to 90%. This stark difference highlights the seasonal extremes, making January a time for cold and damp, while August welcomes warmth and summer showers. For more detailed insights, you can check Izu weather in August.
The weather in January and September presents a striking contrast, showcasing the seasonal transition. In January, temperatures range from a chilly -2°C (29°F) at night to a mild 18°C (64°F) during the day, with an average of 7°C (44°F). The month also experiences relatively low precipitation, totaling 68 mm (2.7 in) over about 5 days, with humidity averaging 76%. In sharp contrast, September features much warmer temperatures, with nighttime lows around 15°C (60°F) and daytime highs reaching up to 33°C (91°F), yielding an average of 23°C (74°F). Additionally, September is significantly wetter, with precipitation amounts soaring to 221 mm (8.7 in) spread over 20 days, and humidity increasing to 86%. For more details on September weather, you can check Izu weather in September.
January and October present strikingly different weather patterns. In January, temperatures range from a chilly -2°C (29°F) to a mild 18°C (64°F), with an average of 7°C (44°F). The month experiences about 68 mm (2.7 in) of precipitation over 5 days and maintains a humidity level of 76%. In contrast, October sees much warmer temperatures, with a minimum of 11°C (52°F), an average of 19°C (66°F), and a peak of 29°C (84°F). However, it is also significantly wetter, receiving 305 mm (12.0 in) of rainfall across 16 days and a higher humidity of 83%. For more detailed information, check out Izu weather in October.
In January, temperatures generally range from a chilly minimum of -2°C (29°F) to a mild maximum of 18°C (64°F), with an average of 7°C (44°F). The month experiences moderate precipitation, totaling 68 mm (2.7 in) over about 5 days, and humidity levels average around 76%. In contrast, November offers warmer conditions, with temperatures ranging from 3°C (38°F) to a pleasant maximum of 22°C (72°F), and an average of 14°C (58°F). This month also sees increased rainfall, with 94 mm (3.7 in) over 10 days, resulting in slightly higher humidity at 80%. For more detailed information, you can check this link: Izu weather in November.
In comparing the weather between January and December, January tends to be slightly cooler with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 18°C (64°F), while December experiences milder temperatures, with a minimum of 0°C (32°F) and a maximum of 21°C (69°F). Precipitation in January is slightly lower at 68 mm (2.7 in) over 5 days compared to December's 74 mm (2.9 in) spread over 8 days. Additionally, January's humidity averages around 76%, which is marginally less than December's 78%. For more details on December weather conditions, you can check Izu weather in December.
In January, Izu experiences a notable shift in weather, marked by cooler temperatures and increased humidity compared to the milder months ahead. With maximums peaking at 18°C and chilly minimums dropping to -2°C, visitors can expect a crisp winter ambiance. Although January sees relatively low precipitation, the humidity levels remain high, creating a unique blend of chill and moisture in the air. This contrasts sharply with the warm and vibrant summer months, making January a perfect time for those who appreciate a quieter, more serene escape. For more detailed information, check out Izu Climate.