Last updated: August 21, 2025
In August, Amakusa, Japan experiences a blend of heat and humidity, with maximum temperatures soaring up to 39°C (103°F) and an average of 29°C (85°F), creating a tropical atmosphere. Nighttime brings some relief, as temperatures dip to a minimum of 21°C (69°F). Visitors should be prepared for frequent rains, as the area receives about 295 mm (11.6 in) of precipitation over 15 days, contributing to a high humidity level of 91%. This mix of conditions offers a uniquely lush environment, perfect for exploring Amakusa’s beautiful landscapes, but also calls for readiness for sudden showers.
In Amakusa, Japan, August brings the peak of summer, with temperatures soaring to maximums of 39°C (103°F), making it the hottest month of the year. The average temperature settles around 29°C (85°F), providing a warm, inviting atmosphere ideal for beach activities and exploration. Even the nights remain pleasantly warm, with minimums of 21°C (69°F), ensuring that the balmy evenings are perfect for outdoor dining and festivities. This dramatic rise in temperature from the cooler months is indicative of the region's transition into a vibrant, lively summer, where locals and tourists alike enjoy the natural beauty and cultural richness that Amakusa has to offer.
In Amakusa, Japan, August typically sees precipitation levels at 295 mm (11.6 in), marking a significant decline from the July peak of 475 mm (18.7 in). This reduction coincides with a slight decrease in the number of rainy days, dropping to 15 days as summer begins to wane. Notably, the preceding months exhibit a consistent increase in rainfall, with June and July showing the highest volumes. However, as August unfolds, the tropical intensity of the heavy summer rains starts to ebb, leading into the more moderate rainfall typical of early autumn. The comparative dip in precipitation from July to August suggests a transition period, paving the way for a cooler and less humid September.
In August, Amakusa, Japan, experiences a high humidity level of 91%, which is characteristic of the summer months. The trend reveals a gradual increase in humidity starting from January's 75%, with noteworthy jumps in the warmer months. Particularly, May and June see significant rises, peaking in July at 92%, before slightly decreasing in August. This pattern highlights the region's characteristic warm and sticky summer climate, with humidity remaining elevated into early autumn as September settles at 84%. The overall trend illustrates how Amakusa's summer months not only bring heat but also elevated moisture levels, creating a distinct and vibrant tropical atmosphere.
In August, Amakusa experiences its highest UV Index of the year at 13, categorizing it as extreme and resulting in a burn time of just 10 minutes. This significant spike follows the trend set in the preceding months, where the UV Index consistently peaked at 12 from June through July. As summer reaches its zenith, outdoor enthusiasts should remain vigilant, taking necessary precautions to protect their skin from harmful UV rays. Reflecting on the data from earlier months, the gradual increase from 5 in January to this month’s peak highlights the changing risks associated with sun exposure throughout the year. For more insights on UV levels in this region, check out Amakusa UV Index.
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In August, Amakusa, Japan, basks in a remarkable 305 hours of sunshine, showcasing its peak warmth and brightness of the year. This month stands out against the backdrop of the previous seasons, where sunlight gradually increased from 189 hours in January to a vibrant 286 hours in April. The trend of escalating sunlight hours continues into the summer, reflecting the region's transition from the pleasant spring to the sun-drenched days of summer. Following August, a slight decline in sunshine hours occurs, returning to 264 hours in September. This pattern not only highlights Amakusa's sunny allure during late summer but also emphasizes the enchanting cycle of seasonal brightness that defines this captivating island destination.
In Amakusa, Japan, the likelihood of enjoying sunny weather in August stands at 27%, a slight uptick from the notably low probabilities seen in the preceding summer months of June (21%) and July (19%). While August does not promise an abundance of sunshine, its historical data suggests a break from the frequent cloud cover of earlier in the season. As the year progresses towards the autumn months, the chance of sunny days markedly increases, with October peaking at an impressive 63%. Thus, while August may not be the sunniest month, it sets the stage for a transition to brighter days just around the corner.
In Amakusa, Japan, August brings an inviting 13 hours of daylight, a slight decline from the peak of 14 hours experienced in the summer months of June and July. This pattern reflects a gradual transition as the vibrant days of summer begin to yield to the cooler seasons ahead. The month of August showcases a balance of light, offering ample time for exploration and outdoor activities while hinting at the approach of autumn. As daylight diminishes in September and continues to wane through the year, the rhythmic ebb and flow of sunlight in Amakusa beautifully illustrates the changing seasons, fostering a deep connection between the natural world and daily life.
In August, Amakusa experiences a gentle breeze, with an average wind speed of 2.9 m/s (7 mph). This marks a slight increase from the previous months, particularly from the low of 1.8 m/s (4 mph) in June, showcasing a return to more favorable summer conditions. Throughout the year, wind speeds tend to be highest during the winter months, with January at 3.2 m/s (7 mph) and December closely following at 3.1 m/s (7 mph). However, as summer progresses, there is a noticeable dip in wind intensity, culminating in the lowest average in June. As August rolls in, the winds pick up again, hinting at a transition toward the cooler autumn months where speeds slightly stabilize. This consistent ebb and flow not only defines the seasonal character of Amakusa but also creates a soothing backdrop for its stunning coastal landscapes.
Weather in Amakusa varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Amakusa, focusing on differences in temperature, rainfall, humidity, and UV levels.
In August, the weather is characterized by high temperatures, with averages reaching 29°C (85°F) and maximums soaring up to 39°C (103°F), accompanied by significant rainfall of 295 mm (11.6 in) over 15 days and high humidity at 91%. In stark contrast, January brings much cooler temperatures, with averages around 8°C (47°F) and maximums only reaching 21°C (69°F). Precipitation is notably lighter in January, totaling 54 mm (2.1 in) over just 6 days, and the humidity drops to 75%. For more detailed information, you can check Amakusa weather in January.
August and February present starkly contrasting weather conditions. In August, temperatures soar with a minimum of 21°C (69°F), averaging a hot 29°C (85°F), and peaking at a sweltering 39°C (103°F). The month is also characterized by high humidity at 91% and significant rainfall, totaling 295 mm (11.6 in) over about 15 days. In contrast, February offers a cooler climate, with temperatures ranging from a chilly minimum of -2°C (29°F) to an average of 9°C (49°F), and a maximum of 22°C (72°F). Precipitation is much lower at 91 mm (3.6 in) across just 9 days, and humidity drops to 71%. For a deeper look at February weather, you can check out Amakusa weather in February.
In August, the weather is characterized by warm to hot temperatures, with a minimum of 21°C (69°F), an average of 29°C (85°F), and a maximum reaching up to 39°C (103°F). This month also experiences high humidity at 91% and considerable precipitation, totaling 295 mm (11.6 in) over approximately 15 days. In contrast, March brings much cooler temperatures, ranging from a minimum of 3°C (38°F) to a maximum of 25°C (78°F), with an average of 13°C (56°F). Rainfall is lighter in March, totaling 143 mm (5.6 in) across about 12 days, and the humidity is noticeably lower at 71%. For more details on March's weather patterns, you can check Amakusa weather in March.
The weather in August is significantly warmer and more humid compared to April. In August, temperatures range from a minimum of 21°C (69°F) to a scorching maximum of 39°C (103°F), with an average of 29°C (85°F). The month also experiences heavy rainfall, totaling 295 mm (11.6 in) over about 15 days, leading to a high humidity level of 91%. In contrast, April is much cooler, with temperatures ranging from a minimum of 6°C (42°F) to a comfortable maximum of 29°C (84°F), and an average temperature of 17°C (63°F). Precipitation in April is lower, totaling 134 mm (5.3 in) across 9 days, accompanied by a humidity of 78%. For a detailed look at the conditions during this time, you can check Amakusa weather in April.
August and May feature contrasting weather patterns, with August typically being warmer and more humid. In August, temperatures range from a minimum of 21°C (69°F) to a sweltering maximum of 39°C (103°F), while May sees milder temperatures, with a range from 10°C (50°F) to 30°C (86°F). Precipitation in August is also notably higher at 295 mm (11.6 in), occurring over 15 days, compared to May's 224 mm (8.8 in) across 11 days. Additionally, August's humidity level is higher at 91%, compared to 84% in May. For more detailed information, you can refer to Amakusa weather in May.
In comparing the weather of August and June, August tends to be significantly warmer, with average temperatures reaching 29°C (85°F) compared to June's milder average of 24°C (76°F). Additionally, August experiences higher maximum temperatures, peaking at 39°C (103°F), while June's highest temperature is a more moderate 32°C (90°F). Precipitation levels are quite similar, with August receiving 295 mm (11.6 in) over 15 days and June slightly wetter at 298 mm (11.7 in) over 16 days. Humidity is also higher in August at 91%, compared to June’s 86%, contributing to a feeling of greater mugginess in the late summer month. For more detailed information on June weather, you can check Amakusa weather in June.
When comparing the weather in August to July, we observe some notable differences. August tends to be slightly warmer, with average temperatures reaching 29°C (85°F) compared to July's 28°C (82°F), and the maximum temperature in August can soar up to 39°C (103°F), which is higher than July’s peak of 37°C (99°F). However, July experiences significantly more rainfall, with total precipitation measuring 475 mm (18.7 in) over 19 days, while August sees a decrease to 295 mm (11.6 in) across 15 days. Both months have high humidity levels, with August at 91% and July at 92%. For further insights on July weather trends, you can check Amakusa weather in July.
August and September present a noteworthy transition in weather patterns. August typically boasts higher temperatures, with an average of 29°C (85°F) and peaks reaching up to 39°C (103°F), while September sees a decline, averaging 26°C (79°F) and maxing out at 35°C (95°F). Precipitation is more intense in August, totaling 295 mm (11.6 in) over 15 days, compared to September's 227 mm (8.9 in) over the same number of days. Humidity levels also drop slightly from August's 91% to September's 84%, making September a bit more comfortable for outdoor activities. For more details on the weather in September, you can check Amakusa weather in September.
August and October present striking contrasts in weather. In August, temperatures soar with minimums around 21°C (69°F) and averages peaking at 29°C (85°F), with maximums reaching a sweltering 39°C (103°F). This month also sees significant rainfall, totaling 295 mm (11.6 in) over 15 days, accompanied by high humidity levels of 91%. On the other hand, October offers a much milder climate, with temperatures ranging from a minimum of 11°C (52°F) to an average of 21°C (70°F) and maximums of 33°C (92°F). Precipitation decreases notably to 120 mm (4.7 in) across 9 days, and humidity drops to 83%. These shifts make October a more comfortable time for outdoor activities. For more specific information, you can check Amakusa weather in October.
August and November present starkly contrasting weather conditions. August is marked by high temperatures, with averages around 29°C (85°F) and peaks soaring up to 39°C (103°F), accompanied by high humidity levels of 91%. This month also sees significant rainfall, with 295 mm (11.6 in) falling over 15 days. In contrast, November features a much cooler climate, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 26°C (79°F), and a much lower average of 15°C (59°F). Precipitation is also reduced to 88 mm (3.5 in) spread over just 8 days, and the humidity decreases slightly to 81%. For more specific insights into the climate during this month, you can check Amakusa weather in November.
In August, the weather is characterized by hot temperatures, with minimums around 21°C (69°F) and maximums reaching up to 39°C (103°F). The average temperature of 29°C (85°F) combined with high humidity at 91% creates a sweltering atmosphere, compounded by notable rainfall of 295 mm (11.6 in) over 15 days. In contrast, December offers a much cooler climate, with temperatures ranging from a minimum of 1°C (33°F) to a maximum of 25°C (77°F) and an average of 10°C (50°F). Precipitation decreases significantly to 90 mm (3.5 in) spread over only 7 days, and humidity drops to 79%. For more details, check Amakusa weather in December.
August in Amakusa presents a striking contrast to other months, marked by intense heat and high humidity. With temperatures soaring to a searing 39°C and an average of 29°C, this month stands out as one of the hottest. The 91% humidity adds to the discomfort, making it feel even warmer. Rainfall is also significant, as August sees about 295 mm of precipitation, distributed over 15 days, which is higher than many other months. This unique blend of warmth and moisture defines the character of summer in Amakusa, leading to lush landscapes but also challenging conditions for outdoor activities. For a deeper dive into how the weather shapes daily life here, explore Amakusa Climate.