Last updated: August 21, 2025
In Yamaguchi, Japan, August delivers a blend of intense heat and high humidity, with maximum temperatures soaring up to 38°C (100°F). The average temperature settles at a warm 28°C (83°F), while nights bring a respite with a minimum of 19°C (66°F). Visitors can expect significant precipitation, totaling 265 mm (10.4 in) over 15 rain-soaked days, making it essential to prepare for unexpected showers. The humidity level hovers around an impressive 93%, creating a muggy atmosphere that characterizes the summer month, perfect for those who appreciate a vibrant and lush environment.
In August, Yamaguchi, Japan, experiences its peak warmth, with temperatures soaring to a maximum of 38°C (100°F). The summer heat is palpable, as the average temperature hovers around 28°C (83°F), offering vibrant days perfect for outdoor activities and exploration. Nights remain pleasantly warm with a minimum of 19°C (66°F), ensuring that the balmy evenings are enjoyable. This month marks a significant shift from the cooler winter temperatures, steadily rising since January, when lows dipped to -4°C (25°F). As the summer draws to a close, Yamaguchi showcases a beautiful transition from the intense heat of August to the milder temperatures of September, reflecting an inviting climate that attracts both locals and tourists alike.
August in Yamaguchi, Japan, continues the summer's trend of significant rainfall, with 265 mm (10.4 in) of precipitation falling over 15 days. This marks a decrease from the staggering 340 mm (13.4 in) recorded in July, yet it still represents a substantial amount of rain for the month. The downpours maintain the region’s lush greenery, although the number of rainy days also indicates that August is a time of lingering summer storms. As monsoon patterns start to shift, the steady rainfall prepares the ground for the coming autumn, blending the tail end of summer heat with the refreshing embrace of pre-autumn conditions. Overall, August's precipitation plays a pivotal role in Yamaguchi's dynamic climate, continuing the high moisture trend characteristic of the season.
In Yamaguchi, Japan, August brings a notable peak in humidity, sitting at a hefty 93%. This month follows the sweltering July, which often experiences the highest levels of moisture at an impressive 95%. As summer progresses, humidity remains high, reflecting a gradual decline from June's 88%, while still significantly elevated compared to the drier months at the beginning of the year. The trend clearly illustrates a seasonal pattern, with humidity levels rising from early spring and reaching a climax in summer before returning to more moderate figures in September at 84%. This makes August a time when the air feels particularly heavy, underscoring the intense heat and stickiness characteristic of Japanese summers.
In August, Yamaguchi experiences an extreme UV Index of 12, marking it as one of the peak months for sun exposure. With a burn time of just 10 minutes, it's crucial to take protective measures when outdoors. This trend of heightened UV intensity aligns with the previous months of July and June, which also maintained a UV Index of 11 or higher, signaling that summer in Yamaguchi is a time to be particularly cautious. As the season transitions toward fall, the UV Index begins to decline, as seen in September with a decrease to 10. To stay informed and prepare for your outdoor activities, check the detailed forecast at Yamaguchi UV Index.
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In August, Yamaguchi, Japan, basks in the glow of 303 hours of sunshine, marking the pinnacle of summer brightness. This month showcases a consistent upward trend, as daylight hours build steadily from January's 174 hours through to the summer peak. Each month from March onward presents a gradual increase, highlighting the thriving warmth of late spring and summer. Although the sun begins to wane in September with 257 hours of sunshine, the delightful August sun sets a vibrant tone, inviting outdoor adventures and memorable experiences under the clear skies of Yamaguchi.
In Yamaguchi, Japan, August brings a notable dip in sunny days, with the chance of sunshine falling to a modest 25%. This decrease is part of a broader trend, as summer months generally show a decline in clear skies, with July offering the lowest likelihood at just 22%. In contrast, the likelihood of sun begins to recover in the following months, particularly October, which boasts a much brighter 58% chance. Thus, as August unfolds, residents and visitors can expect a mix of cloudiness and humidity, making sunny days a cherished rarity in the late summer landscape.
In August, Yamaguchi, Japan enjoys a generous 13 hours of daylight, marking a slight decline from the peak summer months of June and July, which bask in 14 hours of sunlight. This month signals a transitional phase as the vibrant summer days gradually shift towards autumn. Interestingly, after a steady increase in daylight from January's 10 hours to June's zenith, August offers a prevailing warmth and brightness before daylight begins to wane again in September. As the year progresses, daylight hours will gradually decrease, giving way to the cozy, shorter days of fall, but for now, August remains a time of lingering summer radiance.
In Yamaguchi, Japan, the August wind brings a gentle breath of air with an average speed of 2.7 m/s (6 mph), slightly picking up from the slower currents of July. This month typically experiences a mild transition in wind patterns, as the region begins to shift from the calmer summer months toward the breezier conditions of early autumn. While the August winds are still on the lower side compared to the winter months, which average around 3.2 m/s as seen in January, the subtle increase can be a welcome change during the warm summer days. Interestingly, as the seasons progress, the wind speeds gradually rise again in November, hinting at a dynamic and ever-changing atmospheric rhythm that characterizes life in Yamaguchi.
Weather in Yamaguchi varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Yamaguchi, focusing on differences in temperature, rainfall, humidity, and UV levels.
The comparison between August and January weather reveals striking contrasts. In August, temperatures soar with a minimum of 19°C (66°F) and can reach as high as 38°C (100°F), accompanied by high humidity at 93% and significant rainfall of 265 mm (10.4 in) over approximately 15 days. Conversely, January presents a much chillier climate, with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 16°C (60°F) and much lower precipitation of 58 mm (2.3 in) across about 9 days, along with a humidity level of 76%. For more detailed insights on January weather in Yamaguchi, you can visit Yamaguchi weather in January.
August and February present starkly contrasting weather conditions. August boasts a warm climate with temperatures ranging from a minimum of 19°C (66°F) to a scorching maximum of 38°C (100°F), accompanied by high humidity levels at 93%. It also sees considerable rainfall, with 265 mm (10.4 in) of precipitation spread over 15 days. In contrast, February offers a much cooler atmosphere, with temperatures fluctuating from -3°C (27°F) to a pleasant maximum of 22°C (71°F). Precipitation is lower during this month, totaling 78 mm (3.1 in) across just 9 days, and humidity levels are also more moderate at 72%. For more details on February weather in Yamaguchi, you can visit Yamaguchi weather in February.
August and March present distinctly different weather characteristics. In August, temperatures soar with a minimum of 19°C and an average of 28°C, peaking at an oppressive 38°C. The month is marked by high humidity at 93% and considerable rainfall, receiving 265 mm over 15 days. In contrast, March offers a much cooler climate, with temperatures ranging from a chilly -1°C to a mild maximum of 22°C and an average of 10°C. Precipitation is lighter at 130 mm across 12 days, and humidity is lower at 69%. For a more detailed look at March weather, you can visit Yamaguchi weather in March.
August and April present strikingly different weather patterns, showcasing the transition from summer to spring. August boasts much warmer temperatures, with averages around 28°C (83°F) and highs reaching up to 38°C (100°F), compared to April’s milder 14°C (58°F) average and maximum of 26°C (79°F). Humidity is notably higher in August at 93%, contributing to the perception of heat, while April enjoys a more comfortable 75%. Precipitation is also more frequent in August, with rain falling on 15 days and totaling 265 mm (10.4 in), whereas April sees 10 days of rain and 122 mm (4.8 in). For a detailed look at April weather in Yamaguchi, check out Yamaguchi weather in April.
In comparison to May, August experiences much warmer temperatures, with a minimum of 19°C (66°F) and an average high of 28°C (83°F), peaking at a scorching 38°C (100°F). In contrast, May has a cooler range, with temperatures starting at a minimum of 5°C (42°F) and reaching a maximum of 30°C (87°F), averaging around 19°C (67°F). Additionally, August is marked by higher humidity at 93% and significantly more rainfall, totaling 265 mm (10.4 in) over 15 days, compared to May's 136 mm (5.4 in) over 11 days. The weather in May can be more pleasant, making it a more comfortable time for outdoor activities. For more detailed information, you can check Yamaguchi weather in May.
When comparing the weather in August and June, it’s clear that August tends to be warmer and significantly more humid. In August, the temperatures range from a minimum of 19°C (66°F) to a maximum of 38°C (100°F), with an average of 28°C (83°F). This month also sees a substantial amount of precipitation, with 265 mm (10.4 in) falling over 15 days, contributing to a high humidity level of 93%. In contrast, June has cooler temperatures, with a minimum of 12°C (54°F), an average of 22°C (73°F), and a maximum of 31°C (89°F). It receives less rain, totaling 198 mm (7.8 in) over 13 days, and a humidity level of 88%. For more details on the weather in June, you can check Yamaguchi weather in June. Overall, August is characterized by its intense heat and humidity, while June offers a more moderate climate.
In comparing the weather patterns of July and August, we see a notable shift in temperature and precipitation levels. August tends to be slightly warmer, with average temperatures reaching 28°C (83°F) compared to July's average of 26°C (80°F). The maximum temperature in August also peaks higher at 38°C (100°F), whereas July tops at 37°C (99°F). However, August experiences more rainfall, totaling 265 mm (10.4 in) over 15 days, while July sees a heavier precipitation amount of 340 mm (13.4 in) across 20 days. Humidity remains high in both months, with August at 93% and July at 95%. For more detailed insights on July weather, you can refer to Yamaguchi weather in July.
August and September present notable differences in weather conditions. August tends to be hotter, with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 38°C (100°F), while September sees milder temperatures, with a minimum of 13°C (56°F) and a maximum of 35°C (95°F). Precipitation levels are slightly lower in September at 240 mm (9.4 in) over 14 days, compared to August's 265 mm (10.4 in) over 15 days. Additionally, humidity decreases in September to 84%, down from August's steamy 93%. For more detailed information about September weather, you can visit Yamaguchi weather in September.
August and October present a striking contrast in weather conditions. In August, temperatures can soar as high as 38°C (100°F), with an average of around 28°C (83°F), while October enjoys cooler temperatures, peaking at a more moderate 30°C (87°F) and averaging just 19°C (66°F). Rainfall is also significantly higher in August, with 265 mm (10.4 in) logged across 15 days, compared to October's 120 mm (4.7 in) over 10 days. Additionally, humidity levels are notably higher in August at 93%, dropping to 79% in October. For a deeper insight into the October climate, check out Yamaguchi weather in October.
In August, the weather is characterized by high temperatures, with minimums around 19°C (66°F) and maximums reaching up to 38°C (100°F), making it a month of intense heat and humidity with levels at 93%. In contrast, November offers a stark shift, featuring cooler temperatures that typically range from 0°C (32°F) to a pleasant maximum of 25°C (78°F) and an average of 13°C (55°F). Precipitation also decreases significantly from August's 265 mm (10.4 in) over 15 days to just 41 mm (1.6 in) across 5 days in November, contributing to lower humidity levels of 76%. For a more detailed look at November weather in this region, you can visit Yamaguchi weather in November.
August and December showcase a striking contrast in weather. In August, temperatures soar with a minimum of 19°C (66°F) and an average high reaching a sweltering 38°C (100°F), accompanied by heavy rainfall of 265 mm (10.4 in) across 15 days, creating a humid atmosphere with 93% humidity. In stark contrast, December experiences significantly cooler temperatures, where the lows dip to -1°C (31°F) and the average maximum settles at a mild 21°C (70°F). Precipitation decreases notably to 67 mm (2.6 in) over just 8 days, and the humidity drops to a more comfortable 75%. For more insights into December weather, you can visit Yamaguchi weather in December.
August in Yamaguchi stands out as a month of intense warmth and humidity, marked by sweltering temperatures that can soar up to 38°C (100°F). Unlike the milder climate of the earlier summer months, this period is characterized by an average temperature of 28°C (83°F) and a significant increase in humidity, often reaching a suffocating 93%. While rainfall is common, with 265 mm (10.4 in) spread over 15 days, the sun-drenched days dominate, making it a stark contrast to the cooler, drier months that precede it. Those planning to visit during this time should prepare for the heat and potential downpours. For a deeper understanding of how Yamaguchi's weather shapes the experience throughout the year, check out Yamaguchi Climate.