Last updated: August 21, 2025
In August, Itoshima, Japan, experiences a blend of warmth and humidity, with maximum temperatures soaring to 36°C (97°F). The average temperature rests comfortably at 29°C (84°F), while nights bring a refreshing drop to a minimum of 21°C (69°F). This month is characterized by significant precipitation, accumulating to 285 mm (11.2 in) over 14 rainy days, contributing to a high humidity level of 91%. Visitors can expect a tropical atmosphere that enhances the lush beauty of this coastal gem, making it a unique destination for summer adventures.
In August, Itoshima, Japan, experiences its warmest temperatures of the year, with minimums averaging 21°C (69°F) and maximums reaching a sizzling 36°C (97°F). This month marks a significant rise from the preceding months, following a steady increase since June when temperatures first hit the 20s. With an average temperature of 29°C (84°F), August is characterized by its humid summer days, encouraging locals and visitors alike to seek refuge in the coastal breezes and enjoy the vibrant outdoor life. The warmth of August seamlessly transitions into the cooler temperatures of September, serving as a reminder of the fleeting summer before autumn begins to set in.
In August, Itoshima, Japan experiences significant rainfall, with an impressive 285 mm (11.2 in) of precipitation over approximately 14 days. This marks a slight decrease from July’s peak of 321 mm (12.6 in), indicating a transition in the summer monsoon season yet still showcasing a robust wet period. Compared to earlier months, August retains a high average of rainfall, reflecting the region's humid subtropical climate. As the summer progresses, it becomes evident that while rainfall begins to taper off from July's peaks, the frequency and volume in August remain substantial, linking the end of summer with the onset of the fall season. This consistent rainfall plays a crucial role in sustaining the lush landscapes and agricultural activities that characterize Itoshima.
In August, Itoshima experiences a notable humidity level of 91%, maintaining a pattern of elevated moisture that peaks during the summer months. Following a steady increase from June's 86% and July's 92%, August represents a slight dip before humidity begins to recede in the fall. This summer trend is striking, with humidity consistently rising from a more temperate 71% in March and February to the oppressive levels felt in mid-summer. As August transitions into September, the humidity gradually decreases, settling back to a more comfortable 84%. This cyclical rhythm of high humidity reflects Itoshima's warm coastal climate, where the air feels thick with moisture, shaping the region's vibrant summer atmosphere.
The August UV Index in Itoshima, Japan, reaches a high of 12, placing it in the extreme exposure category and necessitating vigilant sun protection. This marks a continuation of a trend seen since April, where the UV levels have consistently registered between 11 and 12, indicating heightened solar intensity throughout the summer months. With a burn time of just 10 minutes, residents and visitors alike should be particularly cautious to avoid skin damage. As the year progresses, the UV Index will gradually decline, with September still showcasing an extreme level of 11 before dipping to more manageable highs in October. For detailed information on UV exposure patterns throughout the year, explore the Itoshima UV Index.
UV Risk Categories
August in Itoshima, Japan, is a sun-filled gem, boasting an impressive 304 hours of sunshine, the highest of the year. This peak follows a steady increase from 179 hours in January, with spring and early summer gradually welcoming more light. The trend culminates in a vibrant month, where warm, golden rays dance across the landscape, enticing both locals and visitors to bask outdoors. As the season transitions into autumn, sunshine begins to wane, dropping to 256 hours in September, yet the lingering warmth of August's brilliance carries a hint of summer's embrace well into the early fall. Overall, the months from June to August showcase a clear upward trajectory in sunshine hours, highlighting the joys of summer in this coastal paradise.
The likelihood of sunny weather in August in Itoshima, Japan stands at 27%, which marks a notable dip compared to earlier months. As summer peaks, the chance of clear skies here is relatively low, contributing to a trend where the sunniest months seem to follow the warmth. In fact, July is the least sunny at just 20%, hinting at the typically humid and rainy conditions of the season. As we look back at the year, October shines brightly with a 60% chance of sun, while the chances improve steadily as the year transitions from summer to autumn. Overall, if you’re planning an August visit, be prepared for a mix of sun and clouds rather than guaranteed sunny days.
In Itoshima, Japan, August experiences about 13 hours of daylight, showcasing a gentle decrease from the peak summer months of June and July, each enjoying 14 hours of sunshine. This transitional shift signifies the gradual onset of autumn, as September follows with a drop to 12 hours. The initial months of the year start with shorter daylight hours, averaging around 10 hours in January and February, before steadily increasing to a vibrant 14 hours in the height of summer. The increase in daylight during spring and summer fosters a lively atmosphere, while the subtle decline in daylight hours as the year progresses hints at the changing seasons, inviting contemplative moments as the year begins to cool.
In August, the winds in Itoshima, Japan, gently whisper at an average speed of 2.4 m/s (5 mph), marking a subtle decline from the breezy summer months. This lull in the air follows a gradual decrease in wind speed from June’s breezy 1.9 m/s to a peak in the earlier part of the year, with January and December boasting the strongest currents at 3.5 m/s (8 mph). As the summer wanes, the transition into autumn is evident—not only in the air temperature but also in the calming winds, which tend to hover around 2.5 m/s (6 mph) in the following months. This pattern creates a serene atmosphere, perfect for enjoying the tranquil beauty of Itoshima's coastal landscapes.
Weather in Itoshima varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Itoshima, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present stark contrasts in weather conditions. In August, temperatures soar with a minimum of 21°C (69°F) and an average of 29°C (84°F), reaching highs of 36°C (97°F). Coupled with high humidity at 91% and significant rainfall of 285 mm (11.2 in) over 14 days, the month brings a balmy and often oppressive summer climate. Conversely, January experiences a much cooler ambiance, with temperatures dipping to a minimum of -1°C (30°F) and averaging around 8°C (46°F), peaking at 17°C (63°F). The winter month is much drier, with just 60 mm (2.4 in) of precipitation over 8 days and a lower humidity level of 75%. For a detailed look at winter conditions, check out Itoshima weather in January.
In stark contrast to February, August boasts significantly warmer temperatures, with averages reaching 29°C (84°F) and highs soaring up to 36°C (97°F). In comparison, February's weather is much cooler, with average temperatures hovering around 8°C (46°F) and maximums only reaching 20°C (68°F). Additionally, August experiences a high level of humidity at 91%, combined with heavy rainfall totaling 285 mm (11.2 in) over 14 days, while February has a more moderate humidity level of 71% and far less precipitation at 78 mm (3.1 in) over just 10 days. For more specific details on February weather in Itoshima, you can visit Itoshima weather in February.
August and March present a stark contrast in weather conditions. In August, temperatures soar, with averages around 29°C (84°F) and peaks reaching 36°C (97°F), accompanied by high humidity levels of 91%. This month experiences significant rainfall, totaling 285 mm (11.2 in) over 14 days. In contrast, March offers a much cooler climate, with temperatures ranging from a low of 4°C (39°F) to a mild high of 21°C (71°F) and an average of just 11°C (53°F). Rainfall in March is lighter, totaling 121 mm (4.8 in) across 11 days, and humidity is lower at 71%. For a detailed look at March weather, you can visit Itoshima weather in March.
In comparing the weather of August and April, August presents a much warmer and more humid climate. With average temperatures reaching 29°C (84°F) and maximums soaring to 36°C (97°F), it contrasts sharply with April's milder averages of 15°C (60°F) and maximums of 26°C (79°F). August also experiences significantly higher precipitation, with 285 mm (11.2 in) over 14 days, compared to April's 112 mm (4.4 in) on just 8 days. Additionally, August's humidity levels peak at a steamy 91%, while April remains more comfortable at 78%. For a detailed look at April weather specifics, check out Itoshima weather in April.
In comparing the weather of August and May, it's evident that August is significantly warmer and more humid. August temperatures range from a minimum of 21°C (69°F) to a maximum of 36°C (97°F), with an average of 29°C (84°F). In contrast, May experiences milder temperatures, with a minimum of 11°C (51°F), a maximum of 28°C (83°F), and an average of 20°C (68°F). Additionally, August sees heavier rainfall, with 285 mm (11.2 in) over 14 days, compared to May's 155 mm (6.1 in) over 11 days. The humidity level in August also reaches 91%, slightly higher than May's 84%. For more detailed information, you can visit Itoshima weather in May.
When comparing the weather in August and June, we can see that August is notably warmer and more humid. In August, the temperatures range from a minimum of 21°C (69°F) to a maximum of 36°C (97°F), with an average of 29°C (84°F). In contrast, June has slightly cooler temperatures, with a minimum of 17°C (63°F) and a maximum of 31°C (88°F), averaging around 23°C (74°F). Additionally, August experiences higher precipitation, with 285 mm (11.2 in) falling over 14 days, compared to June’s 184 mm (7.3 in) over 13 days. The humidity in August also rises to 91%, making it a more sweltering month than June's 86%. For more detailed information, check out Itoshima weather in June.
In comparing the weather of August and July, August tends to be slightly warmer, with an average temperature of 29°C (84°F) compared to July's average of 27°C (81°F). The maximum temperatures also reflect this trend, peaking at 36°C (97°F) in August, while July reaches a maximum of 35°C (95°F). However, August experiences more precipitation at 285 mm (11.2 in) over 14 days, whereas July sees greater rainfall with 321 mm (12.6 in) distributed over 18 days. Humidity remains relatively high in both months, with August at 91% and July slightly higher at 92%. For more details on the weather specifics for July, you can check Itoshima weather in July.
August tends to be quite warm and humid, with average temperatures hovering around 29°C (84°F) and peaks reaching up to 36°C (97°F). The month sees significant precipitation, totaling 285 mm (11.2 in) over approximately 14 days, leading to high humidity levels at 91%. In contrast, September experiences a noticeable drop in temperature, with averages around 25°C (77°F) and maximums of 34°C (94°F). Although September still sees some rainfall, total precipitation decreases to 204 mm (8.1 in) spread over 15 days, and humidity levels also drop to 84%. For more details on September weather, you can visit Itoshima weather in September.
August and October present a striking contrast in weather conditions. In August, temperatures soar with an average of 29°C (84°F) and maximums reaching up to 36°C (97°F), paired with high humidity at 91%, making it feel quite sultry. The month also sees considerable rainfall, with 285 mm (11.2 in) spread across 14 days. In contrast, October offers a much cooler climate, with temperatures ranging from a minimum of 12°C (54°F) to an average of 20°C (69°F) and maximums peaking at 30°C (87°F). Rainfall in October is significantly reduced to 111 mm (4.4 in) over just 10 days, along with lower humidity at 83%. For more specific insights into October weather, you can check Itoshima weather in October.
August weather is characterized by high temperatures, with a minimum of 21°C (69°F) and an average of 29°C (84°F), peaking at a scorching 36°C (97°F). It is also a notably wet month, receiving 285 mm (11.2 in) of precipitation over 14 days, accompanied by high humidity levels of 91%. In contrast, November brings much cooler temperatures, with a minimum of 6°C (42°F), an average of 15°C (59°F), and a maximum of 24°C (75°F). The rainfall significantly decreases to 51 mm (2.0 in) over just 7 days and the humidity drops to 81%. This stark difference highlights the transition from the sweltering heat of summer in August to the more temperate and pleasant conditions of November. For more information about November weather, check out Itoshima weather in November.
August and December present vastly different weather conditions. In August, temperatures soar, with averages around 29°C (84°F) and peaks reaching up to 36°C (97°F), accompanied by high humidity levels of 91% and significant rainfall of 285 mm (11.2 in) over 14 days. In stark contrast, December sees much cooler temperatures, with averages dipping to 9°C (49°F) and a maximum of 23°C (74°F). Precipitation is notably lower at 71 mm (2.8 in) over just 9 days, and humidity levels are reduced to 79%. For a detailed overview of the chilly conditions in December, visit Itoshima weather in December.
In August, Itoshima experiences a notable shift in weather patterns, marked by its peak temperatures and high humidity levels that create a sultry atmosphere. While the days are characterized by warm sunshine, the sky frequently opens up to deliver substantial rainfall, making the month one of the wettest in the region. The averaging temperatures provide a stark contrast to the milder months of spring and early summer, offering a vivid taste of summer’s intensity. As you navigate through these sunny yet unpredictable days, being prepared for both heat and rain is essential. For a comprehensive overview of what to expect throughout the year, explore Itoshima Climate.