Last updated: August 21, 2025
In Kusatsu, Japan, August is characterized by balmy temperatures that range from a sizzling maximum of 38°C (101°F) to a comfortable average of 28°C (83°F), while the evenings cool down to a minimum of 18°C (65°F). This month experiences significant humidity at 91%, adding a tropical feel to the air. Visitors can expect regular rainfall, with an average precipitation amount of 168 mm (6.6 in) over about 12 days, making it essential to pack an umbrella. Overall, August in Kusatsu offers a mix of warmth and occasional showers, perfect for enjoying the region's beautiful hot springs and lush landscapes.
In Kusatsu, Japan, August brings a striking peak in temperatures, with minimums around 18°C (65°F) and averages soaring to 28°C (83°F), highlighting a warm climax to the summer season. The maximum temperatures can reach an impressive 38°C (101°F), offering a stark contrast to the frigid winter months when lows dip as low as -7°C (20°F). This month stands out not only for its warmth but also for the shift from the mild temperatures of early summer; July's highs of 37°C (98°F) prepare visitors for the sweltering August atmosphere. As autumn approaches in September, a gradual cooling sets in, with average temperatures dropping to 24°C (75°F), marking the end of the warm season and paving the way for cooler days ahead.
August in Kusatsu, Japan, brings a notable shift in weather patterns, as the region experiences significant precipitation totaling 168 mm (6.6 in) over 12 days. Following the intense rains of July, which recorded 253 mm (10.0 in), August sees a decrease, yet remains lush and vibrant. This month stands out as a transition period, bridging the heavy summer rains with the onset of autumn. With cooler temperatures and persistent moisture, August's precipitation continues to nurture the breathtaking scenery that Kusatsu is renowned for, creating an ideal environment for both locals and visitors to enjoy. The consistent rainfall days contribute to the region's lush greenery, making it a delightful retreat during this summer month.
In August, Kusatsu, Japan experiences a notable peak in humidity, reaching 91%. This high level of humidity follows a trend observed throughout the summer months, with July hitting a staggering 93%. The transition into August signifies a slight decrease, yet the air remains richly humid, contributing to the region's lush greenery and vibrant natural beauty. As the year progresses, humidity tends to fluctuate, starting at a more comfortable 82% in January before gradually rising through the spring and summer. By late summer, the humidity begins to taper off, creating a refreshing transition into the cooler autumn months with September's 87%. This dynamic shift throughout the year highlights Kusatsu's unique climate, making it a fascinating place for visitors to enjoy nature's bounty.
In August, Kusatsu, Japan, experiences an extreme UV Index of 11, mirroring the high levels recorded in the preceding months of June and July. With a burn time of just 10 minutes, it's a crucial time for sun safety. The trend of increasingly intense UV exposure from earlier months suggests that residents and visitors should remain vigilant with protective measures against the sun's rays. This month continues to reflect the peak of summer, marking a strong emphasis on skin protection. To stay informed about daily UV levels, check the Kusatsu UV Index for timely updates.
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In Kusatsu, Japan, August shines as a peak of sunlight, boasting an impressive 292 hours of radiant rays. As summer unfolds, the trend reveals a steady ascent in daylight, starting from 177 hours in January and culminating in this vibrant month. Following August, the sunlight begins to taper, with September still enjoying 232 hours, but a noticeable dip ensues as autumn sets in. The warmth of May and June, with 282 and 264 hours, respectively, hints at the lush beauty of summer, while the gradual decline into the cooler months of October and November brings it back down to around 228 hours. This rhythmic dance of daylight marks the seasonal transition, making August not only a time of immense sun but also a vibrant highlight on Kusatsu's annual calendar.
When considering the likelihood of sunny weather in August in Kusatsu, Japan, we see a noteworthy trend in seasonal variations. With a 23% chance of sunny days, August stands out as one of the months with lower sunshine probabilities, second only to June's minimal 20%. This places the month in a pattern of diminishing sunlight that begins in late spring. Following August, the likelihood of sunny weather gradually improves, peaking in November at 52%. As summer transitions to autumn, the weather becomes more favorable, suggesting that while August may not be the best time for sun-seekers, the promise of brighter days lies just around the corner.
In Kusatsu, Japan, August marks a subtle transition as daylight duration begins to wane from the peak of summer. With 13 hours of daylight, it follows June and July, which enjoy the longest days at 14 hours. This slight decrease signals the onset of autumn, as the days gradually shorten leading into September's 12 hours of light. Overall, the daylight dynamics throughout the year show a compelling rhythm, with long, sun-soaked summer days giving way to a more temperate autumn, evoking a beautiful balance between light and darkness in this picturesque locale.
In Kusatsu, Japan, the August winds provide a gentle respite, with an average speed of 2.3 m/s (5 mph), mirroring the calm of the preceding summer months. As the peak of the tourist season begins to wane, the winds maintain a steady whisper, slightly lower compared to the lively spring months when speeds reach up to 3.2 m/s (7 mph). Interestingly, the wind gradually lessens from July to August, reflecting a trend of diminishing breeziness throughout the summer that continues into early autumn. As September approaches, the winds stabilize, creating an inviting atmosphere for visitors to bask in the serene beauty of the region, while also hinting at the crispness that autumn will soon bring.
Weather in Kusatsu varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Kusatsu, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present strikingly contrasting weather conditions. In August, temperatures soar with a minimum of 18°C (65°F), averaging around 28°C (83°F), and occasionally reaching a sweltering maximum of 38°C (101°F). This month is marked by high humidity at 91% and substantial rainfall of 168 mm (6.6 in) over approximately 12 days. In stark contrast, January experiences much colder weather, with temperatures dropping to a minimum of -7°C (20°F) and averaging just 4°C (39°F), peaking at a maximum of 15°C (60°F). The precipitation is significantly lower at 52 mm (2.0 in) over about 8 days, and humidity stands at a cooler 82%. For more details on January weather, visit Kusatsu weather in January.
August and February present strikingly different weather conditions. In August, temperatures soar, with minimums around 18°C (65°F) and averages reaching 28°C (83°F), peaking at a sweltering 38°C (101°F). This summer month also sees substantial rainfall, totaling 168 mm (6.6 in) over about 12 days, combined with high humidity levels of 91%, creating a muggy atmosphere.
In contrast, February ushers in a chilly climate, with temperatures ranging from a frigid -6°C (21°F) at night to a mild maximum of 19°C (67°F) during the day. Precipitation drops significantly to 59 mm (2.3 in) over roughly 8 days, and humidity levels decrease to around 79%, resulting in a much drier, crisp winter feel. For more details on February weather, you can check this link: Kusatsu weather in February.
August and March present contrasting weather patterns. In August, temperatures soar with averages around 28°C (83°F), peaking at a sweltering 38°C (101°F), while the humidity remains high at 91%. This month also sees significant rainfall, totaling 168 mm over approximately 12 days, making it a humid and often rainy time of year. In stark contrast, March experiences much cooler temperatures, with an average of 9°C (49°F) and highs reaching only 23°C (73°F). The precipitation is less intense, at 116 mm over 11 days, and the humidity is lower at 74%. For a closer look at the weather characteristics in March, you can visit Kusatsu weather in March.
August and April showcase contrasting weather patterns. In August, temperatures soar with a minimum of 18°C (65°F) and an average high of 28°C (83°F), peaking at a sweltering 38°C (101°F). This month is also characterized by high humidity at 91% and significant rainfall totaling 168 mm (6.6 in) over about 12 days. In contrast, April experiences much cooler conditions, starting with minimum temperatures dropping to -1°C (31°F) and averaging around 14°C (57°F), with highs reaching up to 27°C (80°F). This month sees a moderate amount of precipitation, totaling 138 mm (5.4 in) over 10 days, along with lower humidity at 76%. For a closer look at the weather specifics for April, you can visit Kusatsu weather in April.
When comparing the weather between August and May, one can observe distinct differences in temperature and humidity. August boasts a much warmer climate, with average temperatures around 28°C (83°F) and highs reaching up to 38°C (101°F), while May experiences cooler averages of 19°C (66°F) and maximums of 32°C (89°F). Additionally, August's humidity is notably higher at 91%, compared to May's 83%. Precipitation levels are also significant in both months, with August receiving 168 mm (6.6 in) over 12 days, compared to May's 144 mm (5.7 in) over 11 days. For more specific information, you can refer to Kusatsu weather in May.
When comparing the weather in August and June, August is significantly warmer, with average temperatures soaring to 28°C (83°F) and maximum highs reaching up to 38°C (101°F). In contrast, June features milder temperatures, with averages around 22°C (72°F) and maximums of 32°C (90°F). Humidity remains high in both months, but August sees a slightly increased level at 91% compared to June’s 87%. Additionally, while both months experience similar rainfall days at 12, August receives more precipitation overall, totaling 168 mm (6.6 in) versus June's 141 mm (5.6 in). For more detailed insights into June's weather, you can visit Kusatsu weather in June.
In comparing the weather between July and August, we see that August has slightly warmer temperatures, with a minimum of 18°C and an average of 28°C, compared to July's minimum of 19°C and average of 26°C. August also experiences maximum temperatures reaching up to 38°C, while July peaks at 37°C. However, July is notably wetter, with 253 mm of precipitation over 19 days compared to August's 168 mm over 12 days. Humidity levels remain high in both months, with August at 91% and July at 93%. For more detailed information, you can check the Kusatsu weather in July.
August presents a hot and humid climate, with temperatures soaring from a minimum of 18°C (65°F) to a peak of 38°C (101°F) and an average of 28°C (83°F). The month also sees significant rainfall, with a total of 168 mm (6.6 in) spread over 12 days, resulting in an overall humidity of 91%. In contrast, September offers a cooler environment, where the temperature ranges from a minimum of 14°C (57°F) to a maximum of 35°C (96°F), with an average temperature of 24°C (75°F). Although September experiences slightly less rainfall at 136 mm (5.4 in) over 13 days, the humidity remains relatively high at 87%. For a more detailed look at September’s weather, you can check Kusatsu weather in September.
In August, the weather is characterized by warm temperatures, with a minimum of 18°C (65°F) and an average high reaching up to 38°C (101°F). High humidity at 91% coupled with frequent rainfall—averaging 168 mm (6.6 in) over 12 days—creates a muggy atmosphere. In contrast, October brings a significant drop in temperature, with a minimum of 7°C (45°F) and an average temperature of 18°C (65°F), making the weather much cooler and more comfortable. However, October also sees increased precipitation, with 227 mm (8.9 in) over 13 days, while humidity slightly lowers to 85%. For those curious about October conditions, more details can be found at Kusatsu weather in October.
In August, the weather is typically warm and humid, with temperatures ranging from a minimum of 18°C (65°F) to a scorching maximum of 38°C (101°F) and an average of 28°C (83°F). This month also experiences significant rainfall, with 168 mm (6.6 in) of precipitation over about 12 days, leading to a high humidity level of 91%.
In contrast, November brings cooler temperatures, with a minimum of -1°C (31°F) and an average of 12°C (54°F), reaching a maximum of 25°C (77°F). The precipitation drops to 41 mm (1.6 in) over just 5 days, and humidity is also lower at 83%. For more details on the weather in this month, you can refer to Kusatsu weather in November.
August and December present striking contrasts in weather. In August, temperatures soar with a minimum of 18°C (65°F), an average of 28°C (83°F), and peaks reaching up to 38°C (101°F). This warmth is accompanied by high humidity at 91% and significant rainfall totaling 168 mm (6.6 in) over 12 days. In contrast, December brings a chill, with temperatures dipping as low as -7°C (19°F) and an average of just 6°C (44°F), peaking at 22°C (72°F). Precipitation decreases to 63 mm (2.5 in) spread over 8 days, and humidity drops slightly to 83%. For those interested in detailed insights on December weather, check out Kusatsu weather in December.
In August, Kusatsu experiences a notable shift in weather compared to other months, with high temperatures and elevated humidity making it feel particularly warm and sultry. The combination of maximum temperatures soaring alongside the substantial precipitation underscores the month's tropical characteristics, often resulting in humid and rainy days. This contrast to the milder climates of other seasons makes August a unique time to experience Kusatsu's lush landscapes, enhanced by the lush greenery that follows the rain. For a deeper dive into the seasonal changes and climate specifics, visit Kusatsu Climate.