Last updated: August 21, 2025
Yokohama in January experiences mild to cool temperatures, with a maximum reaching 18°C (65°F) and an average of 6°C (44°F), dipping as low as -3°C (27°F). This month sees about 52 mm (2.1 in) of precipitation, spread across 4 days, making it a relatively wet time of year. The humidity hovers around a high 76%, adding a crispness to the air. Despite the occasional rain, the blend of cooler temperatures and scenic winter landscapes makes January a unique and charming month to explore Yokohama.
In Yokohama, Japan, January temperatures reflect the crispness of winter, with minimums dipping to -3°C (27°F) and averages hovering around 6°C (44°F). Despite the chilly start to the year, the month showcases a maximum temperature that can reach a surprisingly mild 18°C (65°F), hinting at a gradual transition into the milder days ahead. As one moves into February, the cold begins to ease slightly, with minimums rising to 0°C (31°F), and average temperatures becoming a touch warmer at 7°C (45°F). This gentle warming trend is a prelude to the more significant increases seen from March through May, where temperatures steadily climb, ushering in spring with delightful averages around 19°C (67°F) by May. The evolving climate throughout the winter months in Yokohama offers a beautiful rhythm, where the chill of January gradually yields to the vibrant warmth of spring.
January in Yokohama sees a moderate average precipitation of 52 mm (2.1 in) over just 4 days, marking the month as relatively dry compared to the following months. As winter transitions into spring, the rainfall begins to increase, with February bringing slightly less at 43 mm (1.7 in) but with more frequent rain days. By March, the precipitation sharply rises to 138 mm (5.4 in), accompanied by a jump in rainy days to 12, signaling the onset of the wetter spring season. The trend continues, peaking in June and July with considerable rainfall of 161 mm (6.3 in) and 209 mm (8.2 in) respectively, as the summer humidity sets in. Overall, while January remains one of the driest months, it lays the foundation for a notably wet climate that characterizes Yokohama in the months ahead.
In January, Yokohama experiences a humidity level of 76%, marking a period of cool yet moist conditions that set the tone for winter. As the year progresses into February, humidity slightly decreases to 74%, hinting at the subtle shift towards drier air. March continues this trend with a further dip to 70%, offering residents a brief respite. However, as spring unfolds into April, humidity bounces back to 74%, followed by a significant rise to 81% in May, as warmer weather approaches. The onset of summer sees a steep increase, peaking in July at a sweltering 93%, creating a tropical feel that extends through August with 90% humidity. The trend begins to recede in September and October, with readings of 86% and 83%, respectively, as the city transitions into the cooler months. The downward slide continues into November and December, with humidity levels of 80% and 78%, wrapping up the year in a comfortable yet humid embrace. Observing these patterns, one can appreciate how Yokohama's climate transitions from the crispness of winter to the heavy warmth of summer, demonstrating a dynamic and ever-changing atmosphere.
In Yokohama, Japan, the UV Index in January reaches a moderate level of 3, indicating a burn time of 30 minutes for unprotected skin. As winter transitions into spring, the UV Index begins to rise, hitting 5 in February and jumping significantly to 8 in March, where the exposure category becomes very high. This upward trend continues into April and May, with the Index peaking at an extreme 11, where the burn time drops to just 10 minutes. The summer months maintain this intensity, emphasizing the need for sun protection. As autumn approaches, you’ll notice a gradual decrease, with values tapering off to 5 in November and 4 in December. This highlights a clear seasonal pattern in sun exposure risks throughout the year. For more detailed information, visit Yokohama UV Index.
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In Yokohama, Japan, January marks the beginning of the year with a modest 191 hours of sunshine, setting the stage for the gradual increase of light as winter yields to spring. As February unfolds, sunshine hours rise to 233, hinting at the blossoming warmer days ahead. By March, the days become even brighter with 260 hours of sun, leading into April's delightful 273 hours that energize the city. As spring transitions to summer, sunlight peaks in August with an impressive 288 hours, before tapering off in the cooler months. The fall months bring a gentle decline, with sunshine remaining abundant but less intense, averaging around 231 hours in November and December. This upward trend in sunshine culminates mid-year, providing a rich tapestry of light that supports both the vibrant culture and outdoor lifestyle of Yokohama.
In Yokohama, Japan, January brings a 53% chance of sunny weather, marking it as a month with fairly favorable conditions for outdoor activities. As the year unfolds, February sees an uptick to 66%, suggesting a gradual increase in sunshine. Following this peak, however, the likelihood dips in March to 42% before stabilizing around 50% in April and October. Interestingly, as the warmer months approach, the forecast becomes less rosy, with chances plummeting to the low twenties in May and June, while summer months like July and August hover around the mid-thirties. As autumn arrives, the probabilities of sunlight rebound slightly, with November at 59% and December at 64%, hinting that while January may be less than bright compared to its successor, it still presents ample opportunity to enjoy Japan's winter charm under the sun.
In Yokohama, Japan, January marks the beginning of the year with approximately 10 hours of daylight, a duration that remains consistent into February. As spring approaches, the days begin to noticeably lengthen, reaching 11 hours in March. The shift towards longer days continues through April, where daylight extends to 13 hours, peaking at 14 hours from May through July, when vibrant summer sunsets illuminate the city. Following this mid-year zenith, daylight gradually wanes, dropping to 13 hours in August and tapering off back to 10 hours by November. The year rounds out in December with daylight dipping to 9 hours, reflecting the natural ebb and flow of the seasons and inviting a cozy transition into winter.
In Yokohama during January, the average wind speed reaches a calm 4.3 m/s (about 10 mph), setting the stage for a tranquil winter experience. As the month transitions into February and March, the winds pick up slightly, averaging 4.9 m/s (11 mph), which invigorates the air and hints at the forthcoming spring. This pattern of variability continues through the spring months, where April sees a near stable 4.8 m/s before May ushers in a noticeable uptick to 5.3 m/s (12 mph), suggesting an energetic shift in the season. However, as summer arrives, a gentle decline is observed, with June and July showcasing softer breezes averaging 3.7 m/s (8 mph) and 3.2 m/s (7 mph) respectively. The wind picks up again in late summer, only to stabilize through the fall with averages ranging from 4.1 m/s (9 mph) in November to 4.6 m/s (10 mph) in October. Overall, January’s breezes lay the groundwork for a dynamic wind pattern that ebbs and flows with the seasons in this vibrant coastal city.
Weather in Yokohama varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Yokohama, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February present a gradual transition in weather conditions. In January, temperatures range from a minimum of -3°C (27°F) to an average of 6°C (44°F), peaking at 18°C (65°F). The month experiences a total precipitation of 52 mm (2.1 in) over just 4 days, coupled with a humidity level of 76%. In contrast, February shows a slight increase in temperatures, with a minimum of 0°C (31°F) and an average of 7°C (45°F), while still reaching a maximum of 18°C (66°F). Although it is slightly drier with 43 mm (1.7 in) of precipitation, February has a higher frequency of rainy days at 7, and humidity remains relatively stable at 74%. For more detailed information, you can visit Yokohama weather in February.
In January, the weather is quite cold, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 18°C (65°F), and an average of 6°C (44°F). The month sees relatively low precipitation, with 52 mm (2.1 in) over just 4 days, and humidity levels at 76%.
By contrast, March experiences a noticeable warming trend, with temperatures starting at a minimum of 1°C (34°F) and peaking at 20°C (69°F), averaging 11°C (52°F). However, it is also a wetter month, receiving 138 mm (5.4 in) of rain over 12 days, and slightly lower humidity at 70%. For more detailed weather information about this month, check out Yokohama weather in March.
January and April in Yokohama present distinctly different weather patterns. In January, temperatures range from a chilly minimum of -3°C (27°F) to a mild maximum of 18°C (65°F), with an average of around 6°C (44°F). The month sees about 52 mm (2.1 in) of precipitation over approximately four days, and humidity levels hover around 76%. In contrast, April warms up significantly, with temperatures varying from a minimum of 4°C (40°F) to a pleasant maximum of 23°C (74°F) and an average of 15°C (58°F). However, April also brings increased rainfall, totaling 116 mm (4.6 in) across about ten days, while humidity remains relatively constant at 74%. For more detailed information about April weather, you can check Yokohama weather in April.
In January, the weather is considerably cooler, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 18°C (65°F) and an average of 6°C (44°F). The month experiences low precipitation, with only 52 mm (2.1 in) falling over about 4 days, and humidity levels at 76%. In contrast, May brings a significant warm-up, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 27°C (80°F), averaging 19°C (67°F). However, May also sees increased rainfall, totaling 118 mm (4.6 in) over approximately 11 days and slightly higher humidity at 81%. For more detailed information, check out Yokohama weather in May.
January and June display strikingly different weather patterns. In January, temperatures range from a chilly minimum of -3°C (27°F) to a maximum of 18°C (65°F), with an average of 6°C (44°F). The month sees relatively low precipitation, totaling 52 mm (2.1 in) over just 4 days, and humidity levels around 76%. In stark contrast, June experiences much warmer temperatures, with a minimum of 16°C (61°F) and a maximum reaching 29°C (85°F), averaging 22°C (72°F). This month also brings considerable rainfall, accumulating 161 mm (6.3 in) over 13 days, coupled with higher humidity at 88%. For more details on the weather patterns specific to this month, you can refer to Yokohama weather in June.
January and July present stark contrasts in weather. January boasts cooler temperatures, with a minimum of -3°C (27°F) and a comfortable average of 6°C (44°F), while maximum temperatures can reach up to 18°C (65°F). Precipitation is relatively low during January, with only 52 mm (2.1 in) over about 4 days and humidity sitting at 76%. In contrast, July experiences a significant warmth, with temperatures ranging from a minimum of 19°C (66°F) to a sizzling maximum of 35°C (95°F) and an average of 26°C (78°F). The month is also much wetter, receiving 209 mm (8.2 in) of rain over approximately 16 days, accompanied by high humidity levels of 93%. For more details, check Yokohama weather in July.
January and August present starkly contrasting weather conditions. In January, temperatures range from a chilly -3°C (27°F) at night to a mild 18°C (65°F) during the day, with an average of 6°C (44°F). The month experiences a relatively low level of precipitation, totaling 52 mm (2.1 in) over just four days, accompanied by a humidity level of 76%. In contrast, August heats up considerably, with minimum temperatures of 20°C (68°F), an average of 28°C (82°F), and maximums reaching a sweltering 34°C (93°F). This summer month sees higher precipitation of 104 mm (4.1 in) spread over 12 days, and the humidity spikes to 90%. For a more detailed look at the weather specifics, you can check Yokohama weather in August.
When comparing the weather between January and September, a stark contrast is evident. January experiences cooler temperatures, with a minimum of -3°C (27°F) and an average of 6°C (44°F), while September boasts much warmer conditions, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 32°C (90°F). Additionally, January sees relatively low precipitation of 52 mm (2.1 in) over about 4 days, whereas September has significantly higher rainfall at 187 mm (7.4 in) spread across 16 days. The humidity also rises from 76% in January to 86% in September, making the latter month feel more sultry. For a more detailed look at weather conditions during this time, you can check Yokohama weather in September.
January and October present stark contrasts in weather. In January, temperatures range from a chilly minimum of -3°C (27°F) to a pleasant average of 6°C (44°F), peaking at 18°C (65°F). Precipitation is relatively low, occurring only on 4 days with a total of 52 mm (2.1 in), and humidity averages around 76%. In comparison, October experiences milder weather with minimum temperatures starting at 11°C (52°F) and an average of 19°C (67°F), reaching highs of 28°C (83°F). However, October is significantly wetter, with 266 mm (10.5 in) of rainfall spread over 16 days and humidity levels slightly higher at 83%. For more detailed information on October weather specifics, you can refer to Yokohama weather in October.
In January, the weather is notably colder, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 18°C (65°F) and an average of 6°C (44°F). This month experiences less precipitation, totaling 52 mm (2.1 in) over about 4 days, and a humidity level of 76%. In contrast, November has milder temperatures, with a range of 4°C (40°F) to 23°C (73°F) and an average of 14°C (58°F). However, it sees more precipitation, with 87 mm (3.4 in) spread across 11 days and a slightly higher humidity of 80%. For more details about November weather, check out Yokohama weather in November.
In January, temperatures range from a chilly minimum of -3°C (27°F) to a maximum of 18°C (65°F), with an average of 6°C (44°F), while December sees slightly milder conditions with minimums around 0°C (33°F) and maximums reaching up to 21°C (70°F). Precipitation is also higher in December, totaling 64 mm (2.5 in) over 7 days compared to January's 52 mm (2.1 in) on just 4 days. Both months have similar humidity levels, with January at 76% and December slightly higher at 78%. For more information on December's climate specifics, you can visit Yokohama weather in December.
As January rolls into Yokohama, the city experiences a unique blend of brisk temperatures and moderate humidity, creating a refreshing winter atmosphere. With daytime highs gently reaching up to 18°C (65°F) and dipping to a chilly -3°C (27°F) at night, January stands in stark contrast to the warmer months, inviting both locals and visitors to bundle up and explore the serene surroundings. The 52 mm of rain over just a few days adds a touch of moisture to the air, enhancing the crispness while keeping the scenery lush and vibrant. For those planning a visit, the month's distinctive climate offers a refreshing experience, making it a perfect time to discover the beauty of Yokohama. To learn more about how January fits into the broader climate patterns, check out Yokohama Climate.