Last updated: August 21, 2025
Experience the sweltering summer of Hamamatsu, Japan in August, where temperatures can soar to a blistering 42°C (107°F), with an average of 29°C (84°F) providing intense heat. While the minimum temperature dips to a mild 20°C (68°F) at night, the high humidity level of 90% keeps the air thick and sultry. August also sees significant rainfall, with about 197 mm (7.8 in) of precipitation over 15 days, ensuring lush landscapes amid the heat. Whether you're drawn by the vibrant festivals or the serene beaches, be prepared for a uniquely humid and warm experience!
In August, Hamamatsu, Japan, experiences its warmest temperatures of the year, with minimums hovering around 20°C (68°F) and peak highs soaring to a scorching 42°C (107°F). The average temperature climbs to a balmy 29°C (84°F), marking a stark contrast to the cooler months of winter. This sweltering heat invites both locals and visitors to embrace summer activities, but it also highlights the significant temperature swings the region endures throughout the year. Following the intense warmth of August, temperatures begin to dip in the coming months, transitioning back to the mild conditions characteristic of autumn, as September sees a notable drop to a more comfortable average of 25°C (77°F).
In August, Hamamatsu experiences a significant shift in precipitation patterns, with 197 mm (7.8 in) of rainfall spread over 15 days. This marks a notable decrease from the deluge of July, which saw 408 mm (16.1 in) over 21 days, reflecting the peak of the rainy season. The humid summer continues to contribute to occasional downpours, but August's totals signify a gradual transition towards less intense rainfall, maintaining the region's lush greenery. As the summer wanes, the precipitation starts to stabilize, hinting at the changing seasons ahead while still offering a blend of warm days occasionally interrupted by refreshing showers.
In Hamamatsu, Japan, the humidity levels exhibit a distinct seasonal pattern throughout the year. As winter transitions into spring, humidity gently decreases from 76% in January to 70% in March, creating a crisp atmosphere that signals the slowing departure of cold weather. With the arrival of warmer months, humidity sharply climbs, peaking at an impressive 93% in July, reflecting the sultry conditions typical of summer. By August, the humidity remains notably high at 90%, contributing to the region's tropical feel. Although there’s a slight dip in September, the overall trend showcases a warm and humid summer that is characteristic of this coastal city, before gradually easing back into the more comfortable autumn months.
August in Hamamatsu, Japan continues the trend of high UV levels, maintaining an extreme UV Index of 11, similar to the preceding month of July. With a burn time of just 10 minutes, sun protection becomes crucial during this period. The month showcases the peak of summer, both in temperature and solar intensity, as the UV Index gradually tapers off from the extremes observed in late spring and early summer. Following August, September ushers in a slight decrease, dropping to a very high UV Index of 10. Residents and visitors are encouraged to stay informed about the UV Index changes and protect themselves appropriately. For more details, visit Hamamatsu UV Index.
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In Hamamatsu, Japan, the month of August shines brightly, boasting an impressive 317 hours of sunshine, which marks the peak of the year. Following a gradual increase from January's modest 189 hours, the sunny days steadily accumulate throughout the spring, culminating in the vibrant light of summer. The trend exhibits a clear rise as the year progresses, with May and June offering a delightful taste of warmth before August's radiant zenith. After this sun-drenched month, sunshine hours dip slightly but remain generous in September and October, providing a smooth transition into autumn. This yearly pattern not only highlights August as a sun-soaked delight but also showcases Hamamatsu’s capacity for a rich tapestry of seasons, encouraging both locals and visitors to embrace the outdoors.
In Hamamatsu, Japan, the likelihood of sunny weather experiences a notable fluctuation throughout the year. As winter gives way to spring, the chance of sunshine gradually rises, peaking at 60% in February. However, as we move into the summer months, this trend reverses, with July and August bringing a drop to 34% and 30%, respectively. This decline reflects the region's shift from a predominantly sunny season to the sultry embrace of summer heat and humidity, which can obscure clear skies. By autumn, the chance of sunny days begins to recover, hinting at a refreshing transition back to sunnier spells as summer wanes. Thus, while August might not offer the brightest days, it sets the stage for a return to clearer skies in the following months.
In Hamamatsu, Japan, the trend of daylight duration throughout the year reveals a captivating rhythm of changing seasons. August, with its generous 13 hours of daylight, signals a peak summer experience that is just slightly shorter than the high of 14 hours seen in June and July. The steady increase in daylight from 10 hours in January to this summer zenith reflects the region's gradual embrace of warmth and vibrancy. As August wanes, daylight begins its gentle descent, transitioning into September’s 12 hours and ultimately leading to the cooler months ahead. This natural ebb and flow not only marks the passage of time but also invites residents and visitors alike to savor the lingering warmth of summer days before autumn's arrival.
In Hamamatsu, Japan, the August winds present a gentle respite from the summer heat, averaging 3.5 m/s (8 mph). This breeze is a slight uptick from the preceding months of June and July, which saw their lowest wind speeds at 2.7 m/s and 2.6 m/s, respectively. As summer draws to a close, August's invigorating winds evoke a refreshing shift reminiscent of the seasonal transitions ahead. Interestingly, despite the overall decline in wind speed during the summer months, the wind patterns begin to recover in September and October, showing promise for the autumn ahead. This subtle fluctuation throughout the year not only enhances the charm of Hamamatsu's climate but also invites residents and visitors alike to enjoy the amiable August winds.
Weather in Hamamatsu varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Hamamatsu, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present stark contrasts in weather patterns. In August, temperatures soar with a minimum of 20°C (68°F) and an average of 29°C (84°F), reaching a scorching maximum of 42°C (107°F). The month is characterized by high humidity at 90% and considerable rainfall, with 197 mm (7.8 in) of precipitation spread over 15 days. Conversely, January offers a much cooler climate, with temperatures dipping as low as -2°C (29°F) and averaging around 7°C (44°F), peaking at 18°C (64°F). Rainfall is significantly lower, totaling 51 mm (2.0 in) across just 4 days, and the humidity is reduced to 76%. For a more detailed look at January weather, check out Hamamatsu weather in January.
August and February present stark contrasts in weather conditions. In August, temperatures soar with a minimum of 20°C (68°F) and an average high of 29°C (84°F), peaking at a sweltering 42°C (107°F). This month also experiences considerable rainfall, totaling 197 mm (7.8 inches) over about 15 days, accompanied by high humidity levels of 90%. In contrast, February offers a much cooler climate, with temperatures ranging from a chilly minimum of -2°C (29°F) to a mild maximum of 21°C (71°F) and an average of 7°C (46°F). Rainfall is lighter, at 76 mm (3.0 inches) over just 6 days, and humidity is lower at 74%. For more details on February weather, you can check Hamamatsu weather in February.
August and March showcase distinctly different weather patterns. In August, temperatures soar with a minimum of 20°C and an average high of 29°C, reaching sweltering highs of 42°C. The month is also marked by high humidity at 90% and significant rainfall, with 197 mm spread over 15 days. In contrast, March offers a much cooler experience, with temperatures ranging from a chilly 1°C to a comfortable maximum of 25°C and an average of 12°C. Precipitation in March is slightly less at 166 mm over 10 days, accompanied by lower humidity at 70%. For more detailed insights on weather in March, you can visit Hamamatsu weather in March.
August weather is characterized by significantly higher temperatures, with a minimum of 20°C and an average of 29°C, peaking at a scorching 42°C. In contrast, April offers a much cooler climate, with temperatures ranging from a low of 3°C to an average of 15°C and a maximum of 28°C. While August brings about more rain, averaging 197 mm over 15 days with high humidity at 90%, April has slightly less precipitation at 172 mm over 11 days and a lower humidity level of 74%. For more details on weather specifics, check out Hamamatsu weather in April.
When comparing the weather in May and August, notable differences emerge. August typically features much warmer temperatures, with a minimum of 20°C (68°F) and an average high of 29°C (84°F), which can soar up to 42°C (107°F). In contrast, May sees cooler conditions, ranging from a minimum of 9°C (49°F) to an average high of 32°C (90°F). Interestingly, both months experience similar precipitation levels—198 mm (7.8 in)—but August has a higher number of rainy days, occurring on about 15 days compared to 12 days in May. Humidity is another distinguishing factor, with August averaging 90%, while May maintains a lower average of 81%. For a detailed look at May weather, you can view Hamamatsu weather in May.
In comparing the weather of August and June, we can see some striking differences. August typically presents much warmer temperatures, with a minimum of 20°C (68°F) and an average of 29°C (84°F), soaring to a high of 42°C (107°F). In contrast, June is cooler, featuring a minimum of 15°C (59°F) and an average of 23°C (74°F), reaching a maximum of 32°C (90°F).
In terms of precipitation, June sees slightly more rainfall, with a total of 261 mm (10.3 in) spread over 16 days, compared to August's 197 mm (7.8 in) over 15 days. Humidity levels are quite high in both months, with August at 90% and June at 88%. For more information about the June climate in Hamamatsu, you can visit Hamamatsu weather in June.
In July, the weather experienced slightly cooler temperatures than in August, with a minimum of 19°C (67°F) and an average of 27°C (81°F), compared to August's minimum of 20°C (68°F) and average of 29°C (84°F). While both months were humid, with July at 93% and August at 90%, July saw significantly higher precipitation, totaling 408 mm (16.1 in) over 21 days, whereas August received 197 mm (7.8 in) over 15 days. This indicates that while August became warmer, it was also drier than July. For more details, you can check Hamamatsu weather in July.
August and September exhibit distinct weather patterns that mark the transition from summer to autumn. In August, temperatures reach a peak with an average high of 29°C (84°F) and a maximum of 42°C (107°F), accompanied by high humidity levels of 90%. However, this month also sees substantial rainfall, with 197 mm (7.8 inches) over 15 rainy days.
In contrast, September brings a noticeable drop in temperature with an average high of 25°C (77°F) and a peak of 36°C (96°F). While the humidity remains relatively high at 86%, September experiences even more rainfall, totaling 222 mm (8.7 inches) over 20 days. This shift toward increased precipitation and cooler temperatures makes September a month of significant climatic change. For more detailed insights, check out Hamamatsu weather in September.
August typically features much warmer weather compared to October, with temperatures ranging from a minimum of 20°C (68°F) to a scorching maximum of 42°C (107°F) and an average of 29°C (84°F). In contrast, October experiences more moderate temperatures, with a minimum of 10°C (50°F), an average of 20°C (68°F), and a maximum of 32°C (89°F). While both months see approximately 15 days of precipitation, October's total rainfall of 293 mm (11.5 in) surpasses August's 197 mm (7.8 in), indicating that October may feel more humid despite the lower overall humidity level of 83% compared to August's 90%. For a detailed look at the weather specifics, check out Hamamatsu weather in October.
August and November present stark contrasts in weather conditions. In August, temperatures soar with a minimum of 20°C (68°F) and can reach a sweltering maximum of 42°C (107°F), accompanied by high humidity levels of 90%. Rainfall is considerable, accumulating to 197 mm (7.8 in) over 15 days, making it one of the wetter months. In contrast, November brings a significant drop in temperatures, featuring a minimum of 3°C (38°F) and an average of 15°C (58°F), with a maximum of 24°C (75°F). Precipitation is also lower at 83 mm (3.3 in) across 8 days, and humidity decreases slightly to 80%. For more details on November weather, check out Hamamatsu weather in November.
August and December present stark contrasts in weather. In August, temperatures soar, with a minimum of 20°C (68°F) and a scorching maximum of 42°C (107°F), while humidity remains high at 90%. This month experiences significant rainfall, accumulating 197 mm (7.8 in) over 15 days. In contrast, December ushers in much cooler temperatures, averaging 9°C (49°F) with a maximum of 23°C (74°F) and a minimum dipping to 0°C (32°F). Precipitation is significantly lower, with only 67 mm (2.6 in) spread over just 6 days, and humidity at a more comfortable 78%. For more details on the December weather in Hamamatsu, you can refer to Hamamatsu weather in December.
August in Hamamatsu is characterized by its sweltering heat and high humidity, setting it apart from other months. With temperatures soaring to an impressive maximum of 42°C and an average of 29°C, the summer sizzle is palpable, compelling residents and visitors alike to seek relief from the heat. This month also sees a substantial amount of rainfall, with precipitation occurring on about half the days, resulting in a lush and vibrant landscape that contrasts sharply with the drier, cooler months. The combination of high humidity, averaging at 90%, creates a sticky and challenging atmosphere, making August a unique time of year in Hamamatsu. For those looking to understand this city’s weather patterns more thoroughly, detailed information can be found at Hamamatsu Climate.