Last updated: August 21, 2025
August in Amami, Japan, is characterized by warm temperatures and high humidity, making it a quintessential summer month. Daytime highs reach a maximum of 31°C (87°F), with an average temperature of 28°C (83°F), while the mercury rarely dips below 25°C (77°F) at night. However, this tropical paradise also experiences significant rainfall, totaling 193 mm (7.6 in) over approximately 14 days, contributing to its lush landscapes. With humidity levels hovering around 84%, those visiting should come prepared for the sultry atmosphere, ensuring a truly immersive experience in this vibrant island setting.
In Amami, Japan, August marks the pinnacle of summer with minimum temperatures hovering around 25°C (77°F) and averages reaching 28°C (83°F), providing a warm embrace for both locals and visitors. This month sees maximum highs of 31°C (87°F), mirroring the peak warmth observed in July, though with slightly less extreme temperature fluctuations as the season begins to transition. The consistent warmth from late July into August creates a vibrant atmosphere, perfect for enjoying the abundant natural beauty and outdoor activities that the region has to offer. As September approaches, a gentle cooling trend emerges, hinting at the arrival of autumn while still holding onto the lingering summer heat.
August in Amami, Japan, presents a compelling balance of warmth and moisture, with total precipitation reaching 193 mm (7.6 in) over 14 rainy days. This marks a slight increase from July's 185 mm, indicating that the summer monsoon season is in full swing. While June remains the wettest month with a staggering 433 mm, the steady rainfall in August contributes to the lush, vibrant landscape that characterizes the region. Following the pattern of the summer months, this elevated precipitation sets the stage for September, which typically sees even more rain, highlighting Amami's distinct wet season cycle. Overall, August serves as a bridge between the peak rains of summer and the onset of autumn, encapsulating the region's dynamic climate.
In Amami, Japan, the humidity levels demonstrate a notable rise throughout the summer months, peaking in July at a high of 89%. As August arrives, the humidity slightly dips to 84%, yet it remains significantly elevated, providing a tropical feel. This trend showcases the island's climate, where warmth and moisture coalesce, making it a lush paradise. As the season transitions into autumn, humidity begins to decrease, falling to 81% in September, and continuing to decline towards the end of the year. The gradual shift reflects a dynamic climate, balancing between the humid summer and the milder, more comfortable autumn months.
In August, Amami, Japan, experiences a persistent UV Index of 13, placing it firmly in the extreme exposure category. This elevated index indicates a consistent risk of harm from unprotected sun exposure, with a burn time of only 10 minutes for fair-skinned individuals. Throughout the summer months, starting from June to August, the UV Index remains at its peak, reinforcing the need for sun protection. As we transition into September, there’s a slight decrease to a UV Index of 12, yet the extreme risk continues, highlighting the importance of vigilance against sun damage during these long, sunny months. For further details on UV trends and safety, visit Amami UV Index.
UV Risk Categories
In August, Amami, Japan, basks in an impressive 323 hours of sunlight, marking the peak of the summer season. This sun-drenched month showcases a significant increase from the 310 hours enjoyed in July, highlighting the arrival of warm, longer days that invite exploration of the island’s stunning landscapes. As the year progresses, we see a gradual rise in sunshine hours from January's modest 144 hours to August's vibrant peak. Following August, the sunlight gradually decreases, with September still retaining a generous 286 hours, but signaling the beginning of the transition towards the cooler months ahead. This trend underscores Amami's delightful summer, where visitors can relish in the sun’s glow before the year yields to softer, autumnal light.
In Amami, Japan, August brings a refreshing surge in sunny possibilities, with a 37% chance of clear skies. This figure not only matches the sunny probability of the earlier months, February and March, but also serves as a prelude to the more reliable sunshine of September, which boasts a 50% chance. The trend reveals a significant dip in likelihood during the mid-summer months of June and July, underscoring the area's unique climatic patterns. As summer winds down, August offers a delightful balance, paving the way for the sun-soaked days of early autumn.
In Amami, Japan, the month of August features a consistent 13 hours of daylight, aligning with the peak of summer and offering plenty of sunshine for outdoor activities. This duration mirrors the daylight seen in the preceding months of June and July, showcasing a stable period of bright, lengthy days that residents and visitors can enjoy. As summer gives way to autumn, daylight begins to gradually decline, dropping to 12 hours in September and continuing to lessen through the fall months. This gradual shift emphasizes the cyclical nature of daylight in Amami, where long summer days slowly transition to the shorter, cozier days of winter.
In August, the winds in Amami, Japan, gently whisper at an average speed of 5.9 m/s (13 mph), marking a notable dip from the breezy month of July. This decrease continues the trend established in the summer months, where winds generally soften, providing a more tranquil atmosphere. In contrast, the spring months showcased stronger gusts, peaking in February at 7.9 m/s (18 mph). As summer transitions into autumn, winds tend to regain strength, with speeds rising again in October. August presents an idyllic pause in wind activity, making it a perfect time for leisurely coastal strolls and serene outdoor gatherings.
Weather in Amami varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Amami, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present starkly contrasting weather patterns. In August, temperatures soar with a minimum of 25°C (77°F), averaging around 28°C (83°F), and reaching a high of 31°C (87°F). This month is characterized by significant rainfall, totaling 193 mm (7.6 in) over approximately 14 wet days, accompanied by high humidity levels of 84%. In contrast, January experiences much cooler temperatures, with a minimum of 10°C (50°F), an average of 16°C (61°F), and a maximum of 22°C (72°F). Precipitation is notably lower at 98 mm (3.9 in) spread over 12 days, and humidity decreases to 72%. For more details on January weather conditions, you can refer to Amami weather in January.
August and February present distinctly contrasting weather patterns. In August, temperatures soar with a minimum of 25°C (77°F), averaging around 28°C (83°F), and peaking at a maximum of 31°C (87°F). This month is also marked by high humidity at 84% and significant rainfall, with 193 mm (7.6 in) of precipitation across 14 days. In contrast, February is much cooler, featuring a minimum temperature of 9°C (49°F), an average of 16°C (61°F), and a maximum of 23°C (73°F). Precipitation is lower in February at 114 mm (4.5 in), also spread over 14 days, and the humidity is reduced to 70%. For a more detailed look at February's conditions, you can visit Amami weather in February.
In August, the weather is warm and humid, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 31°C (87°F) and an average of 28°C (83°F). This month also experiences significant rainfall, totaling 193 mm (7.6 in) over approximately 14 days, while the humidity often reaches a high 84%. In contrast, March boasts milder temperatures, with a minimum of 13°C (55°F), an average of 18°C (65°F), and a maximum of 23°C (73°F). Although March has slightly less precipitation at 159 mm (6.3 in) over 15 days, the humidity is more comfortable at 76%. For more insights on March weather, check out Amami weather in March.
When comparing the weather in August and April, it's clear that August is significantly warmer and more humid. In August, temperatures range from a minimum of 25°C (77°F) to a maximum of 31°C (87°F), with an average of 28°C (83°F). In contrast, April experiences milder conditions, with temperatures ranging from 13°C (56°F) to 25°C (78°F) and an average of 20°C (68°F). While both months see a fair amount of rainfall, August has higher precipitation totaling 193 mm (7.6 in) over 14 days, compared to April's 121 mm (4.8 in) over 12 days. Additionally, humidity levels in August average 84%, slightly higher than April's 82%. For more details on April weather, you can visit Amami weather in April.
In comparing the weather of August and May, we see that August is generally warmer, with average temperatures ranging from 25°C (77°F) to a high of 31°C (87°F), while May's temperatures are milder, typically between 18°C (65°F) and a maximum of 27°C (80°F). Both months experience high humidity levels at 84%, but August tends to have slightly less precipitation, receiving 193 mm (7.6 in) over 14 days compared to May's 213 mm (8.4 in) across 16 days. For a detailed look at May's climate, you can visit Amami weather in May.
When comparing the weather in June and August, we see distinct differences in temperature and precipitation patterns. In August, temperatures reach a minimum of 25°C (77°F) and an average of 28°C (83°F), while June's temperatures are slightly cooler, ranging from a minimum of 20°C (69°F) to an average of 25°C (78°F). However, June experiences significantly higher precipitation, with 433 mm (17.0 in) over 20 days, compared to August’s 193 mm (7.6 in) over 14 days. Additionally, humidity levels are quite similar, with June at 87% and August at 84%, indicating a consistently humid atmosphere throughout both months. For more detailed insights on June weather in Amami, you can check Amami weather in June.
In comparing the weather of August and July, both months exhibit warm temperatures with only slight variations. August sees a minimum temperature of 25°C (77°F) and maintains an average of 28°C (83°F), similar to July's minimum of 24°C (76°F) and average of 28°C (82°F). Both months experience a maximum temperature of 31°C (87°F). However, August is slightly wetter, with 193 mm (7.6 in) of precipitation over 14 days, compared to July's 185 mm (7.3 in) over 13 days. The humidity in August averages 84%, which is a bit lower than July's higher humidity level of 89%. For more details, check out Amami weather in July.
August generally experiences slightly warmer temperatures compared to September, with average highs of 31°C (87°F) contrasted by September’s maximum of 30°C (87°F). However, September brings a little cooler min temperature of 24°C (75°F) compared to August's 25°C (77°F). In terms of precipitation, September sees an increase to 223 mm (8.8 in) over 20 days, while August had 193 mm (7.6 in) over 14 days, indicating that September is likely wetter. Humidity levels in August are slightly higher at 84%, compared to 81% in September, which may make the latter month feel a bit more comfortable despite the increased rainfall. For a closer look at the weather patterns in September, you can visit Amami weather in September.
In August, the weather tends to be quite warm with average temperatures soaring to around 28°C (83°F) and maximums reaching up to 31°C (87°F). This month also experiences significant rainfall, with a total precipitation of 193 mm (7.6 in) spread over 14 days, accompanied by high humidity levels of 84%. In contrast, October offers a milder climate, with average temperatures dropping to 25°C (77°F) and maximums around 28°C (83°F). Rainfall decreases to 151 mm (5.9 in), also over 14 days, and humidity is slightly lower at 79%. For more details on October weather, you can check Amami weather in October.
In August, the weather is typically warm and humid, with minimum temperatures around 25°C (77°F) and average highs reaching 31°C (87°F). This month experiences significant rainfall, totaling 193 mm (7.6 inches) over approximately 14 days, coupled with high humidity levels at 84%. In contrast, November offers a milder climate, featuring lower temperatures that range from a minimum of 16°C (62°F) to an average of 21°C (71°F) and maximums of 26°C (78°F). Rainfall decreases to 121 mm (4.8 inches) over roughly 12 days, with humidity levels dipping to 77%. For a more detailed look at November weather, you can visit Amami weather in November.
In August, the weather is significantly warmer and more humid, with average temperatures around 28°C (83°F) and high humidity levels of 84%. Frequent rainfall is common, with about 193 mm (7.6 in) of precipitation over approximately 14 days. In contrast, December brings cooler temperatures, with an average of 18°C (65°F) and a maximum of 25°C (77°F). The humidity decreases to 74%, and while December still experiences precipitation, it totals about 125 mm (4.9 in) over 16 days. For more detailed information, you can check Amami weather in December.
In August, Amami experiences a vibrant blend of warmth and humidity, with temperatures peaking higher than in most other months. The average temperature reaches a comfortable 28°C, creating an inviting atmosphere for both locals and visitors. However, this month is also characterized by considerable rainfall, with 193 mm spread across 14 days, making it one of the wetter periods of the year. The high humidity levels hovering around 84% can make the heat feel more intense, but the lush landscapes thrive, showcasing Amami's natural beauty. For a deeper understanding of this unique climate, explore our detailed guide here: Amami Climate.