Last updated: August 21, 2025
In August, Karatsu, Japan experiences a warm and humid climate characterized by a maximum temperature of 33°C (92°F) and an average of 28°C (83°F). The weather consistently invites warmth, with minimum temperatures reaching around 21°C (70°F). This month also sees substantial rainfall, with precipitation totaling 266 mm (10.5 in) over 13 days, contributing to the region's lush greenery. With humidity levels soaring to 94%, visitors should be prepared for a balmy experience, making it essential to stay hydrated and cool while exploring the vibrant coastal culture of Karatsu.
In August, Karatsu, Japan, basks in the warmth of summer, with temperatures ranging from a comfortable 21°C (70°F) at night to sizzling highs of 33°C (92°F) during the day. This month boasts an average temperature of 28°C (83°F), making it one of the hottest times of the year. Following the gradual rise from cooler months, August's significant warmth is a notable peak, contrasting sharply with the chilly beginnings of the year in January when temperatures dipped to just -1°C (31°F). As summer reaches its zenith, residents and visitors alike enjoy the balmy evenings and vibrant outdoor activities that define this sizzling month in Karatsu.
August in Karatsu, Japan, typically brings a notable increase in precipitation, with an average of 266 mm (10.5 in) falling across 13 days. This month continues the trend set by July, which is already the wettest month of the year at 323 mm (12.7 in). Although August sees a decrease in total rainfall compared to July, it remains significantly wet, contributing to the peak of the summer rainy season. This pattern highlights the region's climatological shift into late summer, where sporadic heavy showers often occur, underscoring the importance of preparing for rain during these warm days. As the month concludes, September follows with a decrease in both precipitation amount and rainy days, signaling the transition into a drier autumn period.
In Karatsu, Japan, August brings a notable humidity level of 94%, keeping the air thick and sultry. This high humidity is part of a significant trend that sees levels steadily increase from January's 73% to an impressive 97% in July, the peak of the summer. Following July, August remains slightly lower but still exudes a tropical feel that characterizes the season. As summer transitions into early autumn, humidity levels dip in September to 84%, hinting at the relief that comes with cooler temperatures. This cyclical pattern illustrates how the Japanese summer envelops Karatsu, creating a memorable experience for residents and visitors alike.
In August, Karatsu, Japan experiences a UV Index of 12, categorizing it as extreme and signaling a critical need for sun protection. The burn time is notably short, at just 10 minutes, emphasizing the urgency for outdoor enthusiasts to take precautions. This pattern of high UV exposure continues from July, where the index also peaked at 12, illustrating a trend of rising UV levels through the summer months. As the season transitions into September, the UV Index slightly decreases to 11, though remains in the extreme category, ensuring that awareness and protective measures remain essential. For more detailed information, visit Karatsu UV Index.
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August heralds the peak of sunshine in Karatsu, Japan, boasting an impressive 305 hours of sunlight. This month stands out amidst the yearly trends, showcasing not only the height of summer but also a noticeable surge compared to the preceding months. Following a steady increase from January's 178 hours, the sunlight hours climb steadily through the year, peaking in August before tapering off into the fall. After basking in the summer glow, the hours drop to 257 in September and gradually decrease, illustrating the natural transition into cooler seasons. This vibrant pattern highlights Karatsu’s delightful summer, making August an enticing time for sun-seekers.
In Karatsu, Japan, the likelihood of sunny weather in August stands at a modest 29%, which reflects a slightly challenging month for sun-seekers compared to other times of the year. This dip follows July’s even lower likelihood of 21%, indicating that the summer's peak often brings more clouds than clear skies. Interestingly, the trend shows a gradual increase in sunny probabilities towards the fall, with September climbing back to 33% and October soaring to a more optimistic 60%. Thus, while August may not offer the sunniest days, it serves as a transition towards a brighter autumn, making it a unique time to experience Karatsu's lush landscapes under the evolving weather.
In Karatsu, Japan, the daylight duration experiences a captivating ebb and flow throughout the year. Starting with a modest 10 hours in January and February, the days gradually lengthen as spring approaches, peaking at 14 hours in June and July. As August arrives, the daylight begins to wane slightly, returning to 13 hours, a reminder that summer is drawing to a close. This fluctuation continues into autumn, with daylight decreasing to 12 hours in September and further tapering off to 11 hours in October. By the time winter settles in, daylight reduces to 9 hours in December, completing the cycle of natural illumination in this serene coastal town. The rhythmic dance of daylight not only enhances the beauty of each season but also enriches the experiences of those who call Karatsu home.
In August, the wind in Karatsu, Japan reaches an average speed of 3.3 m/s (7 mph), maintaining a gentle breeze that characterizes the summer months. This slight uptick from July's 3.2 m/s reflects a typical decline in wind activity as the region transitions from the vibrant summer peak towards the more brisk conditions of autumn. Notably, from May to August, wind speeds consistently hover around the 3 to 4 m/s range, suggesting a seasonal lull before the winds pick up again in the late fall months of November and December, where they reach 4.3 m/s (10 mph) and 4.7 m/s (11 mph), respectively. This pattern not only provides a serene atmosphere perfect for those soaking in the coastal beauty but also hints at the dynamic shifts in weather as Karatsu gears up for the changing seasons.
Weather in Karatsu varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Karatsu, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present a stark contrast in weather conditions. August is characterized by warm temperatures, with averages around 28°C (83°F) and highs reaching up to 33°C (92°F). Coupled with high humidity at 94%, the month typically experiences significant rainfall, averaging 266 mm (10.5 in) over 13 days. In contrast, January offers a much cooler climate, with temperatures ranging from a chilly -1°C (31°F) to a mild 18°C (64°F) and an average of 8°C (46°F). This month sees much less precipitation, totaling 69 mm (2.7 in) over just 9 days, along with lower humidity levels at 73%. For more specifics on January weather, you can visit Karatsu weather in January.
August weather is characterized by warm temperatures, with averages around 28°C (83°F) and a maximum often reaching up to 33°C (92°F). The month experiences considerable precipitation, totaling 266 mm (10.5 in) over approximately 13 days, accompanied by high humidity levels of 94%. In contrast, February is much cooler, with average temperatures around 8°C (47°F) and a maximum of 19°C (67°F). Precipitation is also lower in February, with about 84 mm (3.3 in) spread across 11 days and a humidity level of 69%. For more detailed insights into February weather in Karatsu, you can refer to Karatsu weather in February.
August and March offer strikingly different weather conditions. In August, temperatures range from a warm minimum of 21°C (70°F) to a maximum of 33°C (92°F), coupled with high humidity levels of 94%, making it feel particularly oppressive. Additionally, August experiences substantial rainfall, totaling 266 mm (10.5 in) over 13 days. In contrast, March is characterized by much cooler temperatures, with a minimum of 5°C (41°F) and a maximum of 20°C (68°F), averaging around 12°C (53°F). The precipitation in March is lower at 136 mm (5.4 in) over 11 days, and the humidity is also notably less at 71%. For a detailed look at March weather, check out Karatsu weather in March.
The weather in August is significantly warmer and more humid compared to April. Average temperatures in August hover around 28°C (83°F), with maximum highs reaching up to 33°C (92°F), while April experiences a cooler average of 15°C (59°F) and highs of only 24°C (75°F). Additionally, August is marked by heavy rainfall, with 266 mm (10.5 in) of precipitation over 13 days, compared to April's 115 mm (4.5 in) over 9 days. The humidity also plays a role, soaring to 94% in August, in contrast to 79% in April, making August feel much more oppressive. For more details on April weather, you can check Karatsu weather in April.
August and May present contrasting weather conditions. In August, temperatures soar with a minimum of 21°C (70°F) and an average of 28°C (83°F), reaching a peak of 33°C (92°F). The month also experiences higher humidity at 94% and significant rainfall, totaling 266 mm (10.5 in) over 13 days. In comparison, May is much cooler, with minimum temperatures around 11°C (53°F) and an average of 19°C (67°F), capping at 27°C (80°F). Although slightly less rainy, May still sees 153 mm (6.0 in) of precipitation over 11 days and a lower humidity level of 87%. For more details on May weather, visit Karatsu weather in May.
August generally experiences hotter weather compared to June, with average temperatures soaring to 28°C (83°F) and maximums reaching up to 33°C (92°F). In contrast, June's average is a cooler 22°C (73°F), with highs of 29°C (84°F). Both months share a similar number of rainy days, but August sees significantly more precipitation, totaling 266 mm (10.5 in) compared to June's 191 mm (7.5 in). Additionally, August's humidity is slightly higher at 94%, while June sits at 91%. For more details on June weather, you can visit Karatsu weather in June.
In comparing the weather conditions between July and August, August generally showcases slightly warmer temperatures with an average of 28°C (83°F) compared to July’s 26°C (79°F). Both months experience similar maximum heat levels, reaching up to 33°C (91°F) in July and 33°C (92°F) in August. However, August has a higher minimum temperature of 21°C (70°F) versus July's 20°C (68°F). Despite being warmer, August sees a substantial reduction in precipitation, with 266 mm (10.5 in) falling over 13 days, while July accumulates 323 mm (12.7 in) over 18 days. Additionally, humidity remains notably high in both months, with August at 94% and July slightly higher at 97%. For a more detailed look into July's weather patterns, you can visit Karatsu weather in July.
In comparison to August, September experiences a slight decline in average temperature, dropping from 28°C (83°F) to 25°C (77°F). The maximum temperature remains fairly consistent, with September peaking at 32°C (91°F), just a degree lower than August's maximum of 33°C (92°F). Precipitation levels also decrease in September to 210 mm (8.3 in) over 16 days, compared to the more significant 266 mm (10.5 in) over 13 days in August. Additionally, the humidity level drops from a high of 94% in August to a more comfortable 84% in September. For more detailed information, check out Karatsu weather in September.
August and October present a stark contrast in weather conditions. In August, temperatures are significantly warmer, with a range from a minimum of 21°C (70°F) to a maximum of 33°C (92°F) and an average of 28°C (83°F). This month also sees high humidity at 94% and considerable rainfall, totaling 266 mm (10.5 in) over 13 days. In comparison, October experiences cooler temperatures, with a minimum of 13°C (56°F) and a comfortable maximum of 29°C (84°F), averaging around 20°C (69°F). Additionally, October has lower precipitation, with 112 mm (4.4 in) occurring over just 10 days, alongside a decrease in humidity to 79%. For more specific details about October weather, you can visit Karatsu weather in October.
In August, the weather is characterized by warm to hot temperatures, with daily averages around 28°C (83°F) and highs reaching up to 33°C (92°F). The month sees significant precipitation, averaging 266 mm (10.5 in) over 13 rainy days, contributing to a high humidity level of 94%. In contrast, November experiences much cooler temperatures, with an average of 15°C (59°F), lows of 7°C (45°F), and a maximum of 23°C (74°F). The rainfall is considerably lesser at 53 mm (2.1 in) over just 7 days, and humidity drops to 75%. For more specific details about November weather, you can visit Karatsu weather in November.
August and December present stark contrasts in weather conditions. In August, temperatures typically range from a minimum of 21°C (70°F) to a maximum of 33°C (92°F), creating a warm and humid environment with an average temperature of 28°C (83°F). Rainfall is frequent, with 266 mm (10.5 in) of precipitation over 13 days, resulting in a humidity level of 94%. In contrast, December experiences much cooler temperatures, with a minimum of 1°C (35°F) and a maximum of 21°C (71°F), averaging around 10°C (50°F). Rainfall decreases significantly to 81 mm (3.2 in) over just 9 days, and humidity drops to 72%. For more details, visit Karatsu weather in December.
August in Karatsu presents a unique blend of heat and humidity, making it stand out from other months. With maximum temperatures soaring to a blistering 33°C and average warmth hovering around 28°C, the summer sun can be relentless. The air is thick with humidity, often peaking at an impressive 94%, which can make the weather feel even warmer. Additionally, August experiences a notable amount of rainfall, totaling 266 mm over about 13 days, adding to the tropical feel of the month. While other months may offer a more temperate climate, August is undeniably a time of vibrant summer energy and occasional refreshing downpours. For a deeper understanding of the yearly climate patterns, visit Karatsu Climate.