Last updated: August 21, 2025
In Muroran, Japan, August brings a warm climate characterized by a maximum temperature reaching 27°C (82°F) and an average of 21°C (70°F). The month features a mild minimum temperature of 16°C (61°F), inviting outdoor exploration amidst the scenic beauty. However, with 194 mm (7.7 in) of precipitation over 15 days, visitors should be prepared for occasional rain. High humidity levels at 95% add to the summer warmth, creating a lush and vibrant atmosphere perfect for enjoying Muroran's coastal charm.
In August, Muroran experiences a delightful warmth as the summer reaches its peak. With minimum temperatures averaging around 16°C (61°F) and averaging 21°C (70°F), locals and visitors alike enjoy comfortable days, complemented by maxima soaring to 27°C (82°F). This month marks a significant shift from the winter chill, showcasing a gentle transition into the warmer season after the cooler temperatures of early summer. As August unfolds, the city basks in a pleasant climate, making it an ideal time for outdoor activities and exploration, setting the stage for lively summer festivals and vibrant experiences in this coastal gem of Japan.
In August, Muroran, Japan, experiences a remarkable spike in precipitation, recording an impressive 194 mm (7.7 in) of rainfall over 15 days. This marks the peak of the wet season, as August's rainfall significantly surpasses that of previous months, with June and July combined totals of 126 mm (5.0 in) and 128 mm (5.0 in), respectively. As summer draws to a close, the increased precipitation showcases the region's transition into the autumn months, where rainfall gradually decreases but remains substantial. This trend of heightened August rainfall not only illustrates the region's climatic patterns but also emphasizes the lush, vibrant landscapes that thrive under such wet conditions, preparing for the seasonal shift ahead.
August in Muroran, Japan, is characterized by notable humidity levels, reaching a peak of 95%. This month stands out as the most humid of the year, following a gradual increase from the milder conditions of early spring. Starting at 81% in March and rising steadily, humidity soars to 87% in June and hits an impressive 93% by July. The significant rise in moisture during these summer months often creates a warm, heavy atmosphere, setting the stage for the vibrant and lush landscapes that define Muroran. As the summer transitions to autumn, humidity begins to decrease, dropping to 88% in September and further down to 83% by October, indicating a shift towards drier conditions. Overall, August serves as a climax in the year’s humidity cycle, underlining Muroran's unique climate characteristics.
In August, Muroran, Japan, experiences some of the highest UV levels of the year, with a UV Index of 10 categorized as very high. This peak indicates a significant risk of harm from unprotected sun exposure, with a swift burn time of just 15 minutes. Following a trend set through the summer months, both July and August maintain this intensity, urging residents and visitors alike to take precautions against harmful UV rays. After transitioning from the moderate categories earlier in the year, the sharp rise in UV levels prompts an essential awareness for outdoor activities. With September slightly lowering the index to 8, the vigilance for sun safety remains important. For detailed information about the UV index throughout the year, visit Muroran UV Index.
UV Risk Categories
August in Muroran, Japan, presents a beautiful blend of summer warmth and moderate sunshine, with residents enjoying 277 hours of daylight. This month continues the trend of plentiful sunlight that peaks around the vibrant summer, following a steady rise from 142 hours in January to a sun-drenched 300 hours in May. Although August experiences a slight dip in hours, it still boasts significantly more sunshine than the colder months, creating a pleasant atmosphere. As summer transitions into autumn, the decreasing daylight reflects nature's gradual shift, yet the golden hues of August linger, offering Muroran's residents a final taste of summer bliss before the crispness of fall takes hold.
As summer wanes, August in Muroran, Japan, presents a notably lower chance of sunny weather, dipping to 24%. This marks a decline from the more promising monthly averages seen earlier in the summer, particularly in April and June, where the likelihood of sunshine was significantly higher, hovering around 45% and 43% respectively. Interestingly, preceding months, such as July, also reflect a drop in sunny days, suggesting a trend toward cloudier weather as the region transitions from summer to autumn. Despite this dip, sunny days in September rise again to 40%, hinting at the return of brighter days in the latter part of the season.
In Muroran, Japan, the August daylight duration showcases a beautiful transition as summer begins to wane. With approximately 13 hours of daylight, August maintains a vibrant atmosphere, comfortably nestled between the peak of 15 hours in June and the gradual decline towards 12 hours in September. This trend of longer days peaks in early summer, highlighting the region’s bright and energetic ambiance, before giving way to shorter days as autumn approaches. The gentle decrease in daylight reflects the changing seasons, inviting both residents and visitors to relish the lingering warmth while it lasts.
In August, Muroran experiences a gentle increase in wind speed, averaging 5.2 m/s (12 mph), which adds a refreshing touch to the summer heat. This slight rise follows a trend of gradually decreasing winds from June to July, where speeds dipped to 3.9 m/s (9 mph) and 4.3 m/s (10 mph) respectively. The summer months typically feature the lightest breezes, but as August rolls in, the winds begin to pick up again, signaling a transition towards the brisk conditions of fall. From this point onward, wind speeds steadily rebound, with stronger gusts in the following months, notably peaking in late autumn. Thus, August serves as a pivotal moment of change in Muroran’s wind pattern, blending the remnants of summer with the brisk promise of autumn.
Weather in Muroran varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Muroran, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present two distinctly contrasting climates. In August, temperatures range from a mild 16°C (61°F) to a warm 27°C (82°F), with an average of 21°C (70°F) and high humidity at 95%. This summer month also sees considerable rainfall, with 194 mm (7.7 in) spread over 15 days. In stark contrast, January experiences much colder temperatures, ranging from a frigid -9°C (16°F) to a maximum of 8°C (47°F), with an average of -1°C (30°F). Precipitation is less frequent in January, totaling 66 mm (2.6 in) over 13 days, and humidity is lower at 84%. For more details, you can check Muroran weather in January.
August and February showcase stark contrasts in weather. In August, temperatures range from a minimum of 16°C (61°F) to a maximum of 27°C (82°F), with an average of 21°C (70°F). This month is characterized by high humidity at 95% and significant precipitation, totaling 194 mm (7.7 in) over 15 rainy days. In sharp contrast, February experiences frigid conditions, with temperatures plummeting to a minimum of -10°C (14°F) and peaking at just 6°C (43°F), resulting in an average of -1°C (30°F). Precipitation is lower, at 59 mm (2.3 in), occurring on 13 days, and humidity sits at 83%. For more detailed insights about the February weather, you can refer to Muroran weather in February.
In August, the weather is significantly warmer and more humid, with average temperatures ranging from 16°C (61°F) to a high of 27°C (82°F), accompanied by high humidity levels of 95%. Rainfall is frequent, with precipitation occurring on about 15 days, totaling 194 mm (7.7 in). In contrast, March brings much colder conditions, featuring average temperatures between -5°C (23°F) and a maximum of 10°C (50°F), along with lower humidity at 81%. The month sees less precipitation, with 81 mm (3.2 in) spread over 9 days, making it a stark contrast to the summer month. For more specific details on March weather patterns, you can check Muroran 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 16°C (61°F) to a maximum of 27°C (82°F), with an average of 21°C (70°F), while April sees much cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 15°C (59°F), averaging just 6°C (42°F). Moreover, August experiences higher precipitation levels, with 194 mm (7.7 in) over approximately 15 days, compared to April’s 86 mm (3.4 in) across 11 days. The humidity in August also peaks at 95%, making it feel much more muggy compared to the 81% humidity in April. For a detailed look at April's weather specifics, you can visit Muroran weather in April.
When comparing the weather in August and May, notable differences emerge in temperature, precipitation, and humidity. August experiences much warmer temperatures, with a minimum of 16°C (61°F) and an average of 21°C (70°F), compared to May's cooler minimum of 5°C (41°F) and average of 10°C (50°F). While August sees a maximum temperature of 27°C (82°F), May only reaches up to 22°C (73°F). However, August brings significantly more rainfall, totaling 194 mm (7.7 in) over 15 days, in contrast to May's 99 mm (3.9 in) across just 10 days. Additionally, humidity levels are higher in August at 95%, compared to 86% in May, making August feel more muggy. For a detailed look at May's weather specifics, you can check Muroran weather in May.
In comparing the weather between June and August, it's evident that August is significantly warmer, with average temperatures rising from June's 14°C (58°F) to a comfortable 21°C (70°F). While June sees a minimum of 9°C (48°F) and a maximum of 20°C (69°F), August boasts a warmer range of 16°C (61°F) to 27°C (82°F). Additionally, August experiences higher humidity levels at 95%, compared to June's 87%. Precipitation also increases, with August receiving 194 mm (7.7 in) over 15 days, versus June's 126 mm (5.0 in) over 11 days. For more detailed information, you can check out Muroran weather in June.
In comparing the weather of August and July, August tends to be warmer with an average temperature of 21°C (70°F) compared to July's 19°C (66°F). The maximum temperatures reflect this with a peak of 27°C (82°F) in August, while July reaches a maximum of 26°C (79°F). Additionally, August experiences significantly more rainfall, accumulating 194 mm (7.7 in) over 15 days, whereas July sees less precipitation at 128 mm (5.0 in) over 14 days. Humidity is also slightly higher in August at 95%, compared to July's 93%. For more detailed information, you can check out Muroran weather in July.
August tends to be warmer and more humid than September, with average temperatures peaking at around 21°C (70°F) and experiencing significant rainfall of 194 mm (7.7 in) over 15 days. In contrast, September brings slightly cooler temperatures, averaging 19°C (67°F), while also seeing less rainfall at 137 mm (5.4 in) over 13 days. Additionally, the humidity decreases in September to 88%, providing a more comfortable atmosphere compared to the sweltering 95% humidity prevalent in August. For more detailed insights into September weather, visit Muroran weather in September.
August and October present notable differences in weather conditions. In August, temperatures range from a minimum of 16°C (61°F) to a maximum of 27°C (82°F), with an average of 21°C (70°F). It is also characterized by high humidity at 95% and significant rainfall, with precipitation accumulating to 194 mm (7.7 in) over 15 days. In contrast, October sees cooler temperatures, with a minimum of 6°C (43°F), an average of 14°C (58°F), and a maximum of 23°C (73°F). The month has lower humidity at 83% and reduced rainfall at 127 mm (5.0 in) across 12 days. For more detailed weather patterns, check out Muroran weather in October.
In comparing the weather between August and November, a striking contrast emerges. August boasts a warm climate with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 27°C (82°F), accompanied by high humidity levels at 95% and significant rainfall of 194 mm (7.7 in) over 15 days. In sharp contrast, November ushers in cooler temperatures, with a range from -3°C (28°F) to a maximum of 17°C (62°F) and a much lower average of 8°C (46°F). Precipitation also diminishes to 95 mm (3.8 in) across 13 days, while humidity drops to 79%. For more details on how November weather looks, you can check out Muroran weather in November.
August and December present strikingly contrasting weather conditions. In August, temperatures range from a mild 16°C (61°F) to a warm 27°C (82°F), with an average of 21°C (70°F). The month experiences significant rainfall, totaling 194 mm (7.7 in) over 15 days and high humidity levels at 95%. Conversely, December brings much colder conditions, with temperatures dropping to a minimum of -6°C (21°F) and averaging just 1°C (35°F), peaking at 13°C (56°F). Although it rains less, with 86 mm (3.4 in) over 21 days, the humidity is lower at 80%. For more details on the winter weather, you can check out Muroran weather in December.
In August, Muroran experiences a vibrant summer atmosphere characterized by a noticeable rise in temperatures and humidity compared to other months. With an average temperature hovering around 21°C (70°F), the heat peaks at a maximum of 27°C (82°F), creating a warm and inviting environment for outdoor activities. However, this warmth is accompanied by high humidity levels reaching 95% and significant precipitation, with about 194 mm (7.7 in) of rainfall spread over 15 days. This unique blend of warmth and moisture sets August apart, making it a dynamic month for residents and visitors alike. For a deeper understanding of Muroran's year-round weather patterns, explore Muroran Climate.