Last updated: August 21, 2025
Sasebo, Japan, in August experiences hot and humid weather, with maximum temperatures soaring up to 37°C (99°F) and an average of 28°C (83°F). While the warm days invite outdoor activities, the night brings a welcome relief with temperatures dropping to a minimum of 20°C (68°F). This month is also characterized by substantial rainfall, totaling 288 mm (11.3 in) over approximately 15 days, contributing to an overall humidity level of a sultry 94%. Travelers should prepare for both the heat and the occasional downpour, making it essential to stay hydrated and plan activities accordingly.
In August, Sasebo, Japan, experiences some of its hottest weather, with temperatures soaring to a blistering max of 37°C (99°F). The month begins with a minimum temperature of 20°C (68°F), providing a warm foundation for average highs around 28°C (83°F). This notable rise in temperature from previous months illustrates a clear trend towards summer, as July sets the stage with similarly high temperatures. As humidity often accompanies the heat, the city's coastal atmosphere can feel particularly intense during this peak of summer. As August progresses, the warmth starts to fade into September, where temperatures begin to comfortably drop, transitioning to the milder autumn months ahead.
August in Sasebo, Japan, brings considerable rainfall, with an average precipitation of 288 mm (11.3 in) over 15 days. This places August as the second wettest month of the year, following the deluge of July. The steady accumulation of rainfall during the summer months reflects a noticeable upward trend, as precipitation sharply increases from the more moderate levels seen in earlier months like January and February. As the summer progresses, Sasebo often faces the peaks of its rainy season, contributing to the lush greenery and vibrant landscapes characteristic of the region. With September also delivering plentiful rain, the area experiences a unique rhythm of wet seasons, punctuated by the intensity of August's downpours.
In August, Sasebo, Japan, experiences a significant humidity level of 94%, slightly lower than the peaks of July at 97%, yet markedly higher than the drier months at the beginning of the year. Notably, the summer months show a distinct trend of increasing humidity, with June and July serving as the most oppressive, while the transition into September brings a welcome drop to 84%. Overall, August stands at the tail end of a sultry summer, reflecting the area's tendency towards high humidity, especially as it approaches the autumn months, where levels gradually decrease. The pattern highlights Sasebo's characteristic warm, humid climate, providing a unique backdrop for summer activities amidst the damp air.
In August, Sasebo, Japan, experiences a peak UV Index of 12, consistent with the extreme levels observed in July. This signifies a high risk of harm from unprotected sun exposure, where even brief periods of outdoor activity can lead to skin damage in just 10 minutes. The summer months display a rising trend in UV intensity, with values climbing steadily from a moderate UV Index of 4 in January to an extreme level by mid-year. It's crucial for residents and visitors to take protective measures during this time, such as wearing sunscreen, hats, and seeking shade. For more detailed information, visit Sasebo UV Index.
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August heralds peak sunshine in Sasebo, Japan, with an impressive 306 hours of bright skies, making it the sunniest month of the year. This radiant summer month stands out from a steadily increasing trend, as daylight hours have gradually climbed from 168 hours in January to August's sun-drenched total. From February's 227 hours to May's 288 hours, the warmth builds, peaking in the summer before experiencing a gentle decline in the fall months of September and October, both at 258 hours. Overall, Sasebo's sunshine paints a vivid picture of seasonal transformation, inviting both locals and tourists to savor the brilliance of August before autumn's embrace.
In Sasebo, Japan, August tends to offer a moderate 29% chance of sunny weather, making it one of the less sunny months of the year. This decline in sunshine follows a trend where the summer months, notably July (at just 20%), experience a dip in clear skies. As we move into the autumn months, especially October, the likelihood of sunshine significantly rebounds to a striking 62%, suggesting that while August may not provide ideal beach weather, a brighter outlook awaits just around the corner. The overall trend highlights a gradual transition from summer’s humidity to the clearer skies of autumn, making September and October particularly favorable for those longing for sunnier days.
In Sasebo, Japan, August brings a delightful continuation of summer, with approximately 13 hours of daylight illuminating the days. This duration, consistent with May and April, indicates a peak in sunlight that characterizes the warmer months. As we transition from the longer days of June and July, which boast 14 hours of daylight, August serves as a gentle reminder that the bright days are beginning to wane. Following August, the daylight gradually shortens, dropping to 12 hours in September and further decreasing as autumn approaches. This shift highlights a seasonal rhythm, where vibrant summer days give way to the cozy, shorter daylight of fall.
In August, the wind in Sasebo, Japan, picks up slightly, with an average speed of 3.1 m/s (7 mph), creating a gentle breeze that complements the summer heat. This marks a subtle increase from the 2.9 m/s (6 mph) recorded in July, indicating a gradual shift as the summer reaches its peak. Interestingly, as we look back over the year, wind speeds have shown a general trend of decrease from the brisk 4.0 m/s (9 mph) in the winter months of January and February to the mellow breezes of late spring and early summer. However, August presents a slight uptick in wind activity, a refreshing change that transitions smoothly into the coming autumn months, where speeds again rise to 3.4 m/s (8 mph) in November. This cyclical pattern of wind makes each season unique while offering a consistent sense of rhythm in Sasebo's coastal climate.
Weather in Sasebo varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Sasebo, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present a stark contrast in weather conditions. In August, temperatures soar, with an average of 28°C (83°F) and highs reaching up to 37°C (99°F). The month is characterized by high humidity at 94% and substantial rainfall, totaling 288 mm (11.3 in) over 15 days. In contrast, January experiences much cooler temperatures, with an average of 8°C (46°F) and lows dipping down to -2°C (29°F). Rainfall is significantly reduced to 57 mm (2.2 in) over just 7 days, and humidity drops to 73%. For more details on January weather, you can check Sasebo weather in January.
August and February present stark contrasts in weather conditions. In August, temperatures soar with a minimum of 20°C (68°F), averaging around 28°C (83°F), and peaking at a maximum of 37°C (99°F). The month is also marked by significant rainfall, totaling 288 mm (11.3 in) over about 15 days, and high humidity at 94%. In contrast, February experiences much cooler temperatures, with a minimum of -1°C (30°F), an average of 8°C (47°F), and a maximum of 21°C (70°F). Precipitation is less frequent, amounting to 79 mm (3.1 in) across 9 days, and humidity is lower at 69%. For more detailed information, you can check Sasebo weather in February.
August and March present stark contrasts in weather characteristics. In August, temperatures soar with a minimum of 20°C (68°F) and an average of 28°C (83°F), reaching highs of up to 37°C (99°F). This month also witnesses significant rainfall, with 288 mm (11.3 in) occurring over approximately 15 days and humidity levels peaking at 94%. In contrast, March offers a much cooler climate, with temperatures ranging from a minimum of 2°C (37°F) to a maximum of 23°C (73°F), averaging around 12°C (54°F). The precipitation in March is more moderate, totaling 132 mm (5.2 in) over about 10 days, accompanied by a lower humidity level of 71%. For those interested in a detailed overview of March weather, you can visit Sasebo weather in March.
In comparing the weather of August and April, one can observe significant differences in temperature and humidity levels. August tends to be much warmer, with average temperatures reaching 28°C (83°F) and maximums soaring up to 37°C (99°F), while April's averages are a cooler 16°C (60°F) with highs of 27°C (82°F). Additionally, August experiences high humidity at 94%, contributing to a sultry atmosphere, whereas April has a more comfortable humidity level of 79%. Precipitation is notably more prevalent in August, with 288 mm (11.3 in) falling over 15 days compared to April's 114 mm (4.5 in) over 9 days, indicating that August is both warmer and wetter. For more detailed information, you can check Sasebo weather in April.
August and May exhibit notable differences in weather characteristics. August boasts much warmer temperatures, with a minimum of 20°C (68°F) and an average of 28°C (83°F), peaking at a scorching 37°C (99°F). In contrast, May presents a more moderate climate, with temperatures ranging from a minimum of 9°C (48°F) to an average of 20°C (68°F) and a maximum of 28°C (83°F). Precipitation levels are higher in August, totaling 288 mm (11.3 in) over 15 days, compared to May’s 168 mm (6.6 in) over just 11 days. Additionally, August's humidity is more pronounced at 94%, while May maintains a relatively lower humidity of 87%. For more specifics on May weather, you can refer to Sasebo weather in May.
In comparing the weather between June and August, it's clear that August tends to be hotter and more humid. The average temperature in August reaches 28°C (83°F), with maximum temperatures soaring to 37°C (99°F), while June sees a more moderate average of 23°C (74°F) and a maximum of 31°C (89°F). Additionally, August experiences significantly higher precipitation at 288 mm (11.3 in) over 15 days, compared to June's 200 mm (7.9 in) over 12 days. The humidity also rises in August, reaching 94%, whereas June maintains a slightly lower humidity level at 91%. For more detailed information on June weather, visit Sasebo weather in June.
In comparing the weather between July and August, both months experience warm temperatures; however, August tends to be slightly hotter with an average temperature of 28°C (83°F), compared to July's average of 27°C (80°F). The maximum temperature in August reaches up to 37°C (99°F), which is just above July's peak of 36°C (96°F). Precipitation is notably high in both months, though July receives more rainfall at 361 mm (14.2 in) over 18 days, compared to August's 288 mm (11.3 in) over 15 days. Humidity levels remain high throughout both months, with August at 94% and July at 97%. For more detailed information about July weather, visit Sasebo weather in July.
August is characterized by hotter temperatures, with minimums around 20°C (68°F) and peak averages reaching 28°C (83°F), while the maximum can soar to 37°C (99°F). This month also sees significant rainfall, accumulating 288 mm (11.3 in) over 15 days, coupled with high humidity levels at 94%. In contrast, September brings cooler conditions, with minimum temperatures dropped to 17°C (63°F) and average highs settling around 25°C (77°F). Rainfall decreases to 222 mm (8.7 in), also spread over 15 days, and humidity levels lower to 84%. For more detailed insights into September's climate, you can check Sasebo weather in September.
August and October present stark contrasts in weather patterns. In August, temperatures soar with a minimum of 20°C (68°F) and an average of 28°C (83°F), peaking at a scorching 37°C (99°F). The month is also marked by high humidity at 94% and significant rainfall, accumulating 288 mm (11.3 in) over 15 days. In comparison, October brings a noticeable drop in temperature, with a minimum of 11°C (51°F) and an average of 20°C (68°F), reaching a maximum of 31°C (88°F). The precipitation also decreases to 109 mm (4.3 in) over just 9 days, accompanied by lower humidity at 79%. For more details on October weather, you can refer to Sasebo weather in October.
August and November present stark contrasts in weather patterns. In August, temperatures soar with a minimum of 20°C (68°F) and an average of 28°C (83°F), peaking at 37°C (99°F). The month is characterized by heavy rainfall, accumulating 288 mm (11.3 in) over 15 days and accompanied by high humidity levels of 94%. In contrast, November experiences much cooler temperatures, with a minimum of 4°C (40°F), an average of 15°C (58°F), and a maximum of 25°C (77°F). Rainfall significantly decreases to 51 mm (2.0 in) over just 7 days, resulting in lower humidity at 75%. For more insights on weather during this month, check out Sasebo weather in November.
In August, the weather is characterized by high temperatures, with a minimum of 20°C (68°F), an average of 28°C (83°F), and maximums reaching up to 37°C (99°F). This month sees significant rainfall, totaling 288 mm (11.3 in) over approximately 15 days, alongside high humidity levels of 94%. In stark contrast, December experiences much cooler temperatures, with minimums dropping to 1°C (33°F), averages around 9°C (49°F), and maximums reaching 23°C (74°F). Precipitation is also significantly lower in December, with only 74 mm (2.9 in) spread over about 7 days and a relative humidity of 72%. For more details about the weather conditions during this month, check out Sasebo weather in December.
August in Sasebo is characterized by intense heat and high humidity, setting it apart from the milder temperatures of the other months. With average highs reaching an uncomfortable 37°C (99°F) and humidity levels soaring to 94%, this month often feels sweltering. Additionally, the increased rainfall, with 15 days of precipitation totaling 288 mm (11.3 in), adds to the sticky conditions, making August the wettest month of the year. For those planning a visit, it’s essential to prepare for both the heat and the showers, which distinguish Sasebo’s climate during this peak summer season. To learn more about the weather patterns throughout the year, visit Sasebo Climate.