Last updated: August 21, 2025
In January, Chiba, Japan experiences a brisk winter climate characterized by a maximum temperature reaching 16°C (61°F) and an average temperature of 6°C (43°F). Nights can be quite cold, with temperatures dipping to a minimum of -2°C (28°F). This month sees approximately 63 mm (2.5 in) of precipitation, spread across about 5 days, leading to a humid atmosphere with an average humidity level of 76%. Visitors are advised to prepare for cool and damp days, making it a lively yet serene time to enjoy the region's winter charm.
In January, Chiba, Japan, experiences chilly temperatures with a minimum that can dip to -2°C (28°F), while the average hovers around a crisp 6°C (43°F), reaching a maximum of 16°C (61°F). As the month progresses into February, a gradual warming trend begins, with minimum temperatures staying above freezing at 0°C (32°F) and an average increase to 7°C (44°F). This upward trajectory continues as spring approaches, with March bringing averages of 10°C (50°F) and a comfortable maximum of 20°C (68°F). Overall, January stands out as the coldest month, setting the stage for a gradual yet consistent rise in temperatures as winter surrenders to the budding warmth of spring.
In January, Chiba, Japan experiences a relatively tranquil start to the year with precipitation reaching 63 mm (2.5 in) over just five days. This sets a moderate tone when compared to February's slightly lower rainfall of 50 mm (2.0 in), yet the number of rainy days increases to seven. As winter transitions into spring, a significant uptick in rainfall occurs by March, with 162 mm (6.4 in) falling over 13 days. This trend continues as the region approaches summer, peaking in July with 226 mm (8.9 in) over 16 days. Overall, January serves as a gentle precursor to a more dynamic and wetter season that is emblematic of Chiba’s annual climate cycle, highlighting a gradual buildup in both precipitation and frequency as the months progress.
In January, the humidity in Chiba, Japan measures a comfortable 76%, setting the stage for a winter that gradually shifts toward more moisture. This trend continues through February with a slight decrease to 74%, before hitting its lowest point in March at 70%. As spring arrives, humidity bounces back, rising to 74% in April and climbing significantly to 81% by May, signaling the onset of the wetter season. The summer months are marked by high humidity levels, peaking in July at a staggering 93%, and remaining elevated throughout August and September. As the year progresses towards autumn, humidity begins to decline, settling at 78% in December. This pattern highlights Chiba's distinct seasonal shifts, characterized by a marked increase in humidity during the warmer months, creating a distinctly humid tropical feel.
In Chiba, Japan, January marks the beginning of the year with a moderate UV Index of 3, allowing for about 30 minutes of safe sun exposure. As the months progress, the UV Index steadily increases, peaking in the summer months of June through August, where it reaches an extreme level of 11, significantly reducing safe exposure time to just 10 minutes. This trend highlights a clear seasonal shift; while January and December enjoy safe exposure times of 30 minutes under a similar moderate index of 3, April and May introduce very high exposure categories, necessitating caution as the weather warms. For a detailed breakdown of UV levels throughout the year, check out the Chiba UV Index.
UV Risk Categories
In January, Chiba, Japan, basks in approximately 189 hours of sunshine, setting the stage for a gradual warming trend as the year unfolds. As winter transitions into spring, the hours of sunlight steadily increase, peaking in May with 281 hours, providing a vibrant backdrop for the season. This upward trajectory continues through the summer, with August boasting the highest average of 288 hours, ideal for outdoor activities and enjoying the warm weather. However, as autumn approaches, sunlight hours begin to wane, dropping to 234 hours in September and settling around 200 hours by October. Despite this decrease, the relatively consistent sunshine throughout the year underscores Chiba's inviting climate, making it a delightful destination for sun-seekers any time!
In Chiba, Japan, January typically boasts a 39% chance of sunny weather, making it one of the more favorable winter months for sunshine. As we transition from winter to spring, February sees a notable increase with a 64% chance of sunshine, which marks a shift towards clearer days. However, as March approaches, the chances dip again to 41%, before stabilizing at around 50% in April. This pattern suggests a dynamic interplay between cold winter months and the promise of brighter days, with a gradual resurgence of sunlight as spring unfolds. As the year progresses, the likelihood of sunny days fluctuates, peaking again later in the year. Thus, while January offers moderate sunshine, the promise of brighter days looms just around the corner.
In Chiba, Japan, January brings about 10 hours of daylight, a continuation of the shorter days typical of winter. As the months progress, daylight gradually increases, with February maintaining the same 10 hours before March nudges it up to 11 hours. The arrival of spring in April heralds a more significant change, as daylight extends to 13 hours and reaches its peak in May and June, both basking in 14 hours of sunlight. The days begin to shorten again in August, with daylight tapering off to 13 hours. September and October see a gradual decline, bringing daylight down to 11 hours by the end of autumn. November and December witness the return of shorter days, concluding the year with just 9 hours of daylight in December. This rhythmic ebb and flow of daylight not only marks the changing seasons but also sets the stage for the cultural and natural vibrancy of Chiba throughout the year.
As the new year begins in Chiba, Japan, January welcomes visitors with a gentle average wind speed of 3.8 m/s (8 mph), providing a crisp, refreshing chill that hints at the change of seasons. Observing the trends through the months, it’s clear that winter gives way to a gradual increase in wind speeds as spring approaches—February and March see a slight rise to around 4.4 m/s (10 mph) and 4.3 m/s (10 mph) respectively. By April and May, winds strengthen further, peaking at 5.0 m/s (11 mph). However, as summer unfolds, the winds begin to mellow, with July dropping to its calmest at 3.1 m/s (7 mph), before a resurgence in late summer and fall brings more consistent breezes. This cyclical dance of wind speeds reflects the natural rhythms of Chiba's climate, inviting both locals and travelers to experience its dynamic atmosphere throughout the year.
Weather in Chiba varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Chiba, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of January and February, we see that both months experience a similar maximum temperature of 16°C (61°F). However, January tends to be slightly cooler on average, with temperatures ranging from a minimum of -2°C (28°F) to an average of 6°C (43°F), while February sees a minimum of 0°C (32°F) and an average of 7°C (44°F). Precipitation is more frequent in February, occurring over seven days, although it totals 50 mm (2.0 in), slightly less than January's 63 mm (2.5 in) over five days. Humidity levels are also marginally lower in February at 74%, compared to January's 76%. For more detailed insights into February's weather, check out Chiba weather in February.
January and March present notable differences in weather conditions. January typically sees colder temperatures, with a minimum of -2°C (28°F) and an average of 6°C (43°F), while March begins to warm up, showcasing a minimum of 1°C (34°F) and a more comfortable average of 10°C (50°F). The maximum temperatures also rise, reaching 16°C (61°F) in January compared to 20°C (68°F) in March. However, March is considerably wetter, experiencing 162 mm (6.4 in) of precipitation over 13 days, compared to January’s 63 mm (2.5 in) over just 5 days. Interestingly, humidity remains high in January at 76%, but slightly decreases to 70% in March. For more insights, check out Chiba weather in March.
January and April present contrasting weather patterns, reflecting the shift from winter to spring. In January, temperatures range from a minimum of -2°C (28°F) to a maximum of 16°C (61°F), with an average of 6°C (43°F). The month typically sees about 63 mm (2.5 in) of precipitation over approximately 5 days, accompanied by a relatively high humidity level of 76%. In contrast, April warms considerably, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 24°C (76°F) and an average temperature of 14°C (57°F). However, it also experiences increased rainfall, totaling 137 mm (5.4 in) over 11 days, while humidity remains similar at 74%. For more details on April weather, you can check Chiba weather in April.
January and May present distinct contrasts in weather. In January, temperatures range from a chilly -2°C (28°F) to a mild max of 16°C (61°F), with an average of 6°C (43°F). The month experiences a moderate level of precipitation, totaling 63 mm (2.5 in) over about five days, coupled with a humidity level of 76%. In stark contrast, May sees significantly warmer temperatures, with lows of 10°C (51°F) and highs reaching 27°C (81°F), and an average temperature of 19°C (66°F). However, May is wetter, accumulating 147 mm (5.8 in) of rain over approximately 12 days and slightly higher humidity at 81%. For more detailed insights into the weather patterns, you can check Chiba weather in May.
January and June present strikingly different weather conditions. In January, temperatures range from a chilly minimum of -2°C (28°F) to a mild maximum of 16°C (61°F), with an average of 6°C (43°F). The month sees about 63 mm (2.5 in) of precipitation over five days and maintains a relatively high humidity level of 76%. In contrast, June experiences a significantly warmer climate, with minimum temperatures starting at 16°C (61°F) and peaking at 31°C (88°F), averaging around 22°C (71°F). This month is also wetter, receiving approximately 190 mm (7.5 in) of rainfall over 14 days, coupled with an increased humidity of 88%. For more detailed information on this month, you can check Chiba weather in June.
In January, Chiba experiences cool temperatures, with minimums dipping to -2°C (28°F) and average highs reaching around 16°C (61°F). The humidity is relatively moderate at 76%, and there is a modest amount of precipitation, totaling 63 mm (2.5 in) over about 5 days. In contrast, July brings warm and humid weather, with temperatures soaring from a minimum of 19°C (66°F) to a striking maximum of 36°C (97°F) and an average of 25°C (78°F). Precipitation significantly increases to 226 mm (8.9 in) across approximately 16 days, accompanied by a high humidity level of 93%. For more information on July weather specifically, you can check Chiba weather in July.
In January, Chiba experiences chilly weather with temperatures ranging from a minimum of -2°C (28°F) to a maximum of 16°C (61°F), complemented by an average of 6°C (43°F). The month sees about 63 mm (2.5 in) of precipitation over approximately five days, along with a relatively high humidity level of 76%. In stark contrast, August brings sweltering heat, with temperatures soaring from a minimum of 20°C (69°F) to a maximum of 33°C (92°F) and an average of 27°C (81°F). This month also experiences higher rainfall, accumulating about 118 mm (4.7 in) across 13 days and maintaining a humidity level of 90%. For more details on the August weather in Chiba, visit Chiba weather in August.
In January, the weather is quite chilly, with temperatures ranging from a minimum of -2°C (28°F) to a maximum of 16°C (61°F) and an average of 6°C (43°F). This month sees about 63 mm (2.5 in) of precipitation over approximately 5 days, with humidity levels at 76%. In contrast, September experiences significantly warmer weather, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 32°C (89°F), averaging 24°C (75°F). During this month, rainfall increases substantially to 232 mm (9.1 in) spread over about 18 days, and humidity rises to 86%. For more detailed insights, you can check out Chiba weather in September.
January and October in Chiba present a stark contrast in weather conditions. In January, temperatures range from a chilly -2°C (28°F) at night to a mild 16°C (61°F) during the day, with an average of 6°C (43°F). Precipitation is relatively low, with around 63 mm (2.5 in) falling over just 5 days, and humidity is at 76%. In contrast, October sees significantly warmer temperatures, with nighttime lows of 11°C (53°F) and daytime highs reaching up to 28°C (83°F), resulting in an average of 19°C (66°F). However, October also experiences much higher rainfall, totaling 313 mm (12.3 in) over 17 days, and humidity increases to 83%. For more details on the weather in October, check out Chiba weather in October.
January and November present distinct weather contrasts. In January, temperatures are cooler, ranging from a chilly minimum of -2°C (28°F) to a maximum of 16°C (61°F), with an average of 6°C (43°F). The month tends to be drier, with only 63 mm (2.5 in) of precipitation over about 5 days and humidity at 76%. In contrast, November is milder, with temperatures starting at a minimum of 5°C (41°F), peaking at 21°C (71°F) and averaging 14°C (58°F). This month experiences significantly more rainfall, totaling 119 mm (4.7 in) over approximately 12 days, and slightly higher humidity at 80%. For more details on November weather specifically, visit Chiba weather in November.
In January, the weather tends to be slightly cooler than in December, with average temperatures ranging from a minimum of -2°C (28°F) to a maximum of 16°C (61°F), compared to December's minimum of 0°C (33°F) and maximum of 20°C (68°F). Precipitation is also lower in January, measuring 63 mm (2.5 in) over about 5 days, while December sees more rainfall at 80 mm (3.2 in) across 8 days. Both months experience high humidity levels, with January at 76% and December slightly higher at 78%. For more detailed insights, visit Chiba weather in December.
January in Chiba presents a striking contrast to other months, characterized by cooler temperatures and a notable increase in humidity. With an average of 6°C and occasional maximums reaching 16°C, the weather invites cozy layering while still offering some mild days. Unlike the summer's heavy rainfall, January experiences only about 63 mm of precipitation over five days, providing a refreshing crispness to the air. As the month unfolds, visitors can enjoy the serene beauty of winter in Chiba, making it a unique time to explore the region's charm. For a deeper dive into what to expect throughout the year, visit Chiba Climate.