Last updated: August 21, 2025
January in Hamamatsu, Japan presents a crisp winter atmosphere, with temperatures ranging from a brisk -2°C (29°F) to a comfortable 18°C (64°F), averaging around 7°C (44°F). This month sees 51 mm (2.0 in) of precipitation over approximately 4 days, contributing to an overall humidity level of 76%. The chilly weather, paired with occasional rainfall, sets the stage for a serene yet vibrant winter experience in this scenic locale.
In Hamamatsu, Japan, January showcases a diverse range of temperatures, starting 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), this month sets the stage for the winter season, making it one of the colder times of the year. Interestingly, while the minimum temperature remains stable at -2°C through February, the maximum slightly climbs, hitting 21°C (71°F) as spring approaches. This gradual warming trend indicates a shift towards milder weather, paving the way for the more temperate conditions of March and April. As January marks the transition from the crisp cold of winter, it serves as a reminder of the varied climate experiences awaiting residents and visitors in Hamamatsu.
In January, Hamamatsu experiences relatively low precipitation, with a total of 51 mm (about 2.0 in) falling over just 4 days. This light rainfall marks the beginning of a trend that leads to progressively wetter months, notably in March and April, where totals soar to 166 mm and 172 mm respectively. As spring transitions into summer, the city sees a dramatic increase, with June and July recording some of the highest precipitation levels—261 mm and 408 mm respectively—coupled with an increase in rainy days. By August, the precipitation begins to taper off again, indicating a return to drier conditions as autumn approaches. This cyclical pattern highlights Hamamatsu's distinctive seasonal shifts, characterized by relatively dry winters giving way to lush, wet summers.
In Hamamatsu, Japan, January marks the beginning of the year with a humidity level of 76%, setting a humid tone for the winter months. As the seasons transition into spring, humidity gradually declines, dropping to 74% in February and 70% in March. However, with the arrival of May, residents experience a noticeable shift as humidity surges to 81%, paving the way for a steamy summer. This ascent continues, peaking in July at a substantial 93%, creating a warm and muggy atmosphere typical of Japanese summers. Following this peak, humidity levels slightly decrease but remain elevated, with August at 90% and slowly tapering off to 83% by October. The year concludes with November and December maintaining a comfortable 80% and 78% humidity, respectively, highlighting the overall sticky climate that characterizes life in Hamamatsu throughout the year.
In January, Hamamatsu experiences a moderate UV Index of 4, where exposure for about 30 minutes can lead to skin damage. This sets the stage for a gradual increase as the season shifts. By February, the index rises slightly to 5, maintaining that moderate exposure level. However, as spring approaches, the index makes a significant leap in March and reaches 8, signaling a transition to very high levels of UV radiation, with a critical burn time of just 15 minutes. This trend continues through April, peaking at 10 in May, where the sun’s intensity moves into the extreme category, urging residents to seek shade and protect their skin from rapid burns. The summer months see the UV Index remaining at 11 to 12, requiring vigilant sun protection strategies as the burn time shortens to just 10 minutes. As autumn approaches, the UV intensity gradually decreases, with October seeing a high index of 7 and burn times slightly increasing again. Ultimately, January starts the year at a comfortable level but is a reminder of how quickly UV exposure can escalate in Hamamatsu. For detailed insights, visit Hamamatsu UV Index.
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In Hamamatsu, Japan, January greets the year with a modest 189 hours of sunshine, setting the stage for a gradual transition towards brighter days. As the month ticks on into February and March, the sun's presence strengthens, with recorded hours climbing to 235 and 269 respectively. This upward trend continues into April and May, where residents bask in the warmth of 281 and 299 hours of sunlight—perfect for outdoor activities and enjoying nature's beauty. However, as summer approaches, the sun still graces Hamamatsu generously, particularly in August, where it peaks at an impressive 317 hours. Following this high point, sunshine hours begin to taper off, leading into the cooler months of fall and winter. Despite this decline, October and November still offer a respectable 226 and 241 hours, ensuring that the warmth lingers pleasantly before the year comes to a close. Overall, Hamamatsu exhibits a delightful seasonal rhythm, where each month presents its unique charm under the sun.
In Hamamatsu, Japan, January enjoys a 58% chance of sunny weather, marking it as a favorable start to the year. This percentage aligns closely with February's likelihood of 60%, suggesting a brief period of bright days before the cloudier months ahead. As spring approaches, the likelihood of sun dips to 45% in March and further to 47% in April, hinting at the transition as winter gives way to milder weather. Interestingly, the chance of sunny skies plummets to around 28-34% through the summer months, reflecting the region's humid and often rainy conditions. However, as the year draws to a close, the odds of sunshine gradually increase again, reaching 73% by December. Overall, while January stands out with a solid chance of sunny weather, the trend signifies a shift toward more variable conditions as the seasons change.
In Hamamatsu, Japan, January heralds the start of the year with a modest 10 hours of daylight, a figure that remains steady into February. As spring approaches in March, daylight gradually extends to 11 hours, hinting at the longer days to come. April and May experience a delightful surge, both boasting 13 hours of sunlight, as nature fully embraces the warming season. By June and July, the days peak at 14 hours, offering ample time for outdoor adventures under the vibrant summer sun. As summer yields to autumn, daylight begins to wane, with August dropping to 13 hours and September to 12 hours. In October, daylight retreats further to 11 hours, leading into the darker months of November and December, where it dwindles to a mere 9 hours. This cyclical pattern of daylight duration not only reflects the changing seasons but also invites residents and visitors alike to savor the unique beauty of each month in Hamamatsu.
In January, the wind in Hamamatsu, Japan, typically gusts along at an average speed of 4.6 m/s (10 mph), setting a brisk tone for the year ahead. As the month transitions into February, there’s a slight increase in wind speed to 4.7 m/s (11 mph), suggesting that winter’s chill still holds sway. However, spring's impending arrival takes its toll; by March, winds soften to 3.9 m/s (9 mph) and continue to taper off, reaching their lowest point in the hotter months of June and July, where they drift to just 2.6 m/s (6 mph). This gentle breeze characterizes the summer, only to pick up again in late autumn and winter, with December winds returning to a lively 4.4 m/s (10 mph). Overall, the trend in Hamamatsu showcases a seasonal ebb and flow, where the wind speed ebbs during the summer and surges back as the colder months return.
Weather in Hamamatsu varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Hamamatsu, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February share relatively similar temperature ranges, with January recording a minimum of -2°C (29°F) and an average of 7°C (44°F), while February maintains the same minimum but shows a slight increase in average temperature to 7°C (46°F) and a maximum of 21°C (71°F). Precipitation is more frequent in February, totaling 76 mm (3.0 in) over 6 days, compared to January's 51 mm (2.0 in) over just 4 days. Despite these changes, February's humidity remains slightly lower at 74% compared to January's 76%. For a more detailed overview, you can check Hamamatsu weather in February.
January typically experiences cooler temperatures, with a minimum of -2°C (29°F) and an average of 7°C (44°F), while March sees a notable rise with a minimum of 1°C (34°F) and an average of 12°C (53°F). The maximum temperatures also reflect this warming trend, reaching 18°C (64°F) in January compared to 25°C (77°F) in March. Rainfall is more significant in March, with 166 mm (6.5 in) spread over 10 days, compared to January's 51 mm (2.0 in) over just 4 days. Despite March's higher precipitation, humidity levels slightly decrease from January's 76% to 70%. For more detailed insights, visit Hamamatsu weather in March.
In January, the weather is considerably cooler with average temperatures ranging from a minimum of -2°C (29°F) to a maximum of 18°C (64°F), accompanied by 51 mm (2.0 in) of precipitation over just 4 days. In contrast, April brings a significant warming trend, with temperatures ranging from 3°C (37°F) to a much warmer average of 15°C (60°F), peaking at 28°C (83°F). Additionally, April is wetter, experiencing 172 mm (6.8 in) of precipitation spread over 11 days, although the humidity remains relatively stable at 74%. For more detailed insights, check Hamamatsu weather in April.
In January, the weather is quite cool, with temperatures ranging from a low of -2°C (29°F) to a mild high of 18°C (64°F). The month experiences an average temperature of 7°C (44°F) and about 51 mm (2.0 in) of precipitation over just four days, along with a humidity level of 76%. In contrast, May brings significantly warmer conditions, with temperatures soaring from a minimum of 9°C (49°F) to a sweltering maximum of 32°C (90°F), averaging around 20°C (68°F). This month sees a substantial increase in precipitation, totaling 198 mm (7.8 in) over 12 days, with humidity climbing slightly to 81%. For more specific insights into the weather during May, you can check Hamamatsu weather in May.
In January, the weather is much cooler, 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). The month sees about 51 mm (2.0 in) of precipitation over approximately 4 days, with a humidity level of 76%. In contrast, June experiences significantly warmer conditions, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 32°C (90°F) and an average of 23°C (74°F). However, June is also much wetter, recording 261 mm (10.3 in) of precipitation across 16 days and a humidity level of 88%. For more details on the specific weather conditions, check out Hamamatsu weather in June.
January and July exhibit stark contrasts in weather conditions. In January, temperatures vary from a chilling minimum of -2°C (29°F) to a mild maximum of 18°C (64°F), with an average of 7°C (44°F). This month sees moderate precipitation of 51 mm (2.0 in) over just four days and a humidity level of 76%. Conversely, July heats up significantly, with temperatures ranging from a warm minimum of 19°C (67°F) to a scorching maximum of 40°C (105°F) and an average of 27°C (81°F). Rainfall dramatically increases in July, with 408 mm (16.1 in) spread over 21 days, accompanied by high humidity at 93%. For a closer look at July weather specifics, you can visit Hamamatsu weather in July.
January and August present starkly contrasting weather conditions. 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 sees only 51 mm (2.0 in) of precipitation over roughly 4 days, and the humidity stands at 76%. On the other hand, August is the peak of summer, with temperatures soaring from a minimum of 20°C (68°F) to a scorching maximum of 42°C (107°F), averaging 29°C (84°F). Precipitation significantly increases to 197 mm (7.8 in) across 15 days, accompanied by high humidity levels of 90%. For more detailed insights on the weather in August, check Hamamatsu weather in August.
The comparison between January and September highlights a striking contrast in weather conditions. In January, temperatures range from a chilly minimum of -2°C (29°F) to a mild average of 7°C (44°F), peaking at 18°C (64°F). This month experiences relatively low precipitation, with only 51 mm (2.0 in) falling over 4 days and humidity at 76%. Conversely, September boasts much warmer temperatures, with a minimum of 15°C (60°F) and an average of 25°C (77°F), reaching highs of 36°C (96°F). However, it is also a much wetter month, receiving 222 mm (8.7 in) of rain over 20 days and experiencing higher humidity at 86%. For a detailed look at weather patterns during this month, you can visit Hamamatsu weather in September.
January and October present stark 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). Precipitation is relatively low, totaling 51 mm (2.0 in) over just 4 days, and humidity hovers around 76%. In contrast, October brings warmth with a minimum temperature of 10°C (50°F) and a maximum of 32°C (89°F), averaging 20°C (68°F). It is also much wetter, experiencing substantial rainfall of 293 mm (11.5 in) across 15 days, accompanied by a slight increase in humidity to 83%. For more details about October's weather in this region, you can refer to Hamamatsu weather in October.
In comparing the weather between January and November, we see a notable difference in temperatures and precipitation patterns. January typically features cooler temperatures, with minimums dropping to -2°C (29°F) and an average of 7°C (44°F), while November enjoys milder conditions with minimums around 3°C (38°F) and an average of 15°C (58°F). Additionally, November experiences more precipitation than January, with 83 mm (3.3 in) over 8 days compared to January's 51 mm (2.0 in) over just 4 days. Humidity levels are also slightly higher in November at 80%, compared to January's 76%. For more information on November weather specifics, you can check out Hamamatsu weather in November.
In comparing the weather of January and December, January tends to be cooler, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 18°C (64°F), while December has a slightly warmer range of 0°C (32°F) to 23°C (74°F). December also experiences higher precipitation, totaling 67 mm (2.6 in) over approximately 6 days, compared to January's 51 mm (2.0 in) spread across 4 days. Humidity levels are similar in both months, with January at 76% and December at 78%. For more detailed insights, you can check Hamamatsu weather in December.
January in Hamamatsu showcases a distinct chill compared to the milder months of spring and autumn. As the year begins, residents and visitors experience cooler temperatures, with nighttime lows often dipping below freezing, creating a noticeable contrast to the warmer seasonal averages. The higher humidity levels, combined with January's occasional rainfall, add to the brisk ambiance, making this month feel particularly refreshing yet crisp. While the precipitation is limited, its presence serves to emphasize the colder climate. For those seeking to understand the nuances of Hamamatsu's seasonal changes, additional insights can be found at Hamamatsu Climate.