Last updated: August 21, 2025
In August, Itoigawa, Japan experiences a blend of warm temperatures and high humidity, with average highs reaching 33°C (91°F) while lows hover around 18°C (64°F). The month is characterized by a mean temperature of 26°C (78°F), creating a humid environment as moisture levels peak at an impressive 92%. Visitors should prepare for frequent rain, as 20 days of precipitation contribute to a total of 265 mm (10.4 in), making it one of the wetter months in the region. Whether you’re exploring its stunning landscapes or indulging in local culture, August in Itoigawa promises both warmth and vibrant summer rain.
In August, Itoigawa, Japan, experiences its warmest days of the year, with temperatures showcasing a delightful range. The minimum temperature hovers around a comfortable 18°C (64°F), while the average climbs to a pleasant 26°C (78°F), peaking at a maximum of 33°C (91°F). This month marks a striking contrast to the chill of winter months, reflecting the region's transition from the cool spring to warm summer. As the heat settles in, the vibrant atmosphere invites both locals and visitors to relish the great outdoors, making it an ideal time for summer festivals and nature excursions.
August in Itoigawa, Japan, continues the trend of significant rainfall, with precipitation levels reaching 265 mm (10.4 in), matching the amount recorded in September. This peak follows a notably wet July, which saw 347 mm (13.7 in) across 23 days, indicating a pattern of intense summer showers. In August, rain graces the landscape for 20 days, providing a much-needed respite for the lush surroundings while keeping temperatures in check. Despite a slight decline from July, the consistent precipitation during this month reinforces the region's reputation for summer rainfall, making it a vibrant yet humid time of year in Itoigawa.
August in Itoigawa, Japan, sees humidity peak at 92%, mirroring the trend established in July. This summer season showcases a marked increase in moisture levels, with the air feeling particularly heavy due to the warm temperatures. The late spring months of April and May provide a brief pause in humidity, floating around 78% to 81% before the summer months usher in a noticeable rise. Despite the cooler months from September to December experiencing a gradual decrease in humidity, the summer months, particularly July and August, remain characterized by their high levels of moisture, making for a distinctly humid climate. Overall, the humidity patterns suggest a cyclical nature where high moisture prevails during the warmer months, offering a unique atmosphere for residents and visitors alike.
In August, Itoigawa experiences a persistent peak in UV intensity, with the UV Index reaching 11 and falling into the extreme exposure category. This means that outdoor activities require heightened caution, as skin can burn within just 10 minutes of unprotected sun exposure. Following the trend established in July, where the index also hit 11, both months highlight a critical period for sun safety in the region. As summer wanes, the UV Index will begin to decline, dropping to 9 in September and transitioning into the high exposure category. For more detailed insights into the UV patterns throughout the year, visit Itoigawa UV Index.
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In August, Itoigawa basks in a generous 302 hours of sunshine, marking it as one of the sunniest months of the year. This radiant display is a continuation of a consistently bright summer, following May's peak of 303 hours, creating a warm and inviting atmosphere that beckons both locals and visitors to enjoy the great outdoors. As summer transitions into autumn, the sun-soaked days begin to wane, with September seeing a drop to 252 hours. This trend highlights Itoigawa's delightful summer climate, making August a perfect time for outdoor activities and soaking in the vibrant beauty of nature before the cooler months arrive.
In Itoigawa, Japan, the weather in August presents a notable contrast to the sunnier months that precede it. With only a 21% chance of sunny days, August is tied with January for the least likelihood of clear skies, indicating a shift towards more overcast and potentially wet conditions. This dip in sunshine comes after a mixed bag of brighter days in April and July, where sunny probabilities reach 45% and 36%, respectively. As the summer progresses into fall, the chance of sun generally stabilizes, with months like October and November showcasing improved sunshine rates at 39% and 46%. Thus, while August may not be the sunniest month, it marks a transition towards the changing seasons in this picturesque region.
In Itoigawa, Japan, August marks the tail end of summer, with the city enjoying approximately 13 hours of daylight. This month reflects a slight decline from the peak daylight hours seen in mid-summer, as June and July basked in a full 14 hours of sun. The trend from late spring to autumn indicates a gradual decrease in daylight, starting from 14 hours in May, tapering off as the days grow shorter with the approaching fall. By September, daylight drops to 12 hours, signaling the transition into cooler, shorter days. This rhythmic ebb and flow of sunlight is a beautiful reminder of the changing seasons, as Itoigawa dances between the vibrant warmth of summer and the welcoming embrace of autumn.
In August, Itoigawa, Japan experiences a gentle breeze with an average wind speed of 1.9 m/s (4 mph), marking a subtle increase from the calmer summer months of June and July. This slight uptick hints at the transitioning weather patterns as summer wanes and autumn approaches. Throughout the year, wind speeds fluctuate significantly, starting robustly in the colder months of January and February at around 3.4 m/s (8 mph) and 3.9 m/s (9 mph), before gradually tapering off during the height of summer. As September rolls in, wind speeds stabilize at 1.9 m/s (4 mph), suggesting a continued calm before the winds pick up again in the later months. The seasonal dance of wind in Itoigawa beautifully captures the essence of each passing month, echoing the shifting rhythms of nature.
Weather in Itoigawa varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Itoigawa, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present strikingly contrasting weather conditions. In August, temperatures range from a minimum of 18°C (64°F) to a maximum of 33°C (91°F), with an average of 26°C (78°F). The month is characterized by high humidity at 92% and significant rainfall, totaling 265 mm (10.4 in) over approximately 20 days.
In contrast, January experiences much colder weather, with temperatures dipping as low as -5°C (23°F) and only reaching a maximum of 11°C (53°F), averaging just 2°C (35°F). Although January sees a similar level of precipitation—263 mm (10.4 in)—it falls over 23 days, and humidity is slightly lower at 88%. For more detailed insights on January conditions in this region, you can visit Itoigawa weather in January.
August and February present contrasting weather conditions. In August, temperatures soar with a minimum of 18°C (64°F) and an average of 26°C (78°F), peaking at a maximum of 33°C (91°F). This warm month is also characterized by high humidity levels of 92% and significant rainfall, totaling 265 mm (10.4 in) over approximately 20 days. In stark contrast, February experiences much colder temperatures, ranging from a minimum of -6°C (22°F) to an average of 2°C (35°F), and a maximum of 12°C (54°F). Precipitation in February, while slightly less at 235 mm (9.2 in), occurs over a similar number of days, 22, and the humidity is relatively lower at 86%. For more detailed insights into the weather during February, you can visit Itoigawa weather in February.
August and March present stark contrasts in weather. August features a warm climate with temperatures ranging from a minimum of 18°C (64°F) to a scorching maximum of 33°C (91°F), alongside high humidity levels at 92%. In contrast, March is much cooler, with temperatures dropping to a minimum of -4°C (24°F) and peaking at 16°C (61°F), presenting an average temperature of just 5°C (41°F). While August experiences significant rainfall, with 265 mm (10.4 in) spread over 20 days, March sees less precipitation at 175 mm (6.9 in) over 18 days. For a more detailed look at the weather in March, you can visit Itoigawa weather in March.
In comparing the weather between August and April, it's clear that the two months offer vastly different climates. August brings much warmer temperatures, with average highs around 26°C (78°F) and maximums reaching up to 33°C (91°F), contrasted with April's milder averages of 9°C (49°F) and maximums of 21°C (70°F). Additionally, August experiences significantly higher humidity at 92% and more precipitation, totaling 265 mm (10.4 in) over 20 days. In contrast, April sees lower humidity levels at 78% and less rainfall at 174 mm (6.9 in) spread across 15 days. For more details on April weather specifically, you can check Itoigawa weather in April.
When comparing the weather between August and May, there's a significant contrast in both temperature and precipitation. August boasts warmer temperatures, with averages reaching 26°C (78°F) and highs soaring up to 33°C (91°F), while May is much cooler with averages around 15°C (59°F) and a maximum temperature of 26°C (79°F). Additionally, August experiences considerably more rainfall, with 265 mm (10.4 in) falling over 20 days, compared to May’s 138 mm (5.4 in) over 15 days. Humidity levels are also higher in August at 92%, while May sees a milder 81%. For a closer look at weather conditions during May, you can visit Itoigawa weather in May.
In comparing the weather between June and August, August features significantly warmer temperatures, with averages soaring to 26°C (78°F) and maximums reaching 33°C (91°F), while June's temperatures are cooler, averaging at 19°C (66°F) and peaking at 26°C (80°F). Precipitation is higher in August, accumulating to 265 mm (10.4 in) over 20 days, compared to June's 168 mm (6.6 in) during 13 days of rainfall. Humidity also rises in August, averaging 92%, slightly higher than June’s 88%. For a closer look at June's climate specifics, visit Itoigawa weather in June.
In comparing the weather between July and August, both months exhibit high temperatures and humidity levels. July features a minimum temperature of 18°C (64°F) and an average of 24°C (75°F), reaching a maximum of 34°C (94°F). However, rainfall is more pronounced in July, with 347 mm (13.7 in) of precipitation over 23 days. In contrast, August has a similar minimum of 18°C (64°F) but sees an increase in average temperature to 26°C (78°F), with a maximum of 33°C (91°F). While the precipitation in August is still significant at 265 mm (10.4 in), it occurs over 20 days. Despite the slight differences in temperature and rainfall, both months are characterized by consistently high humidity levels of 92%. For more insights specifically on July's conditions, you can refer to Itoigawa weather in July.
August and September both experience significant rainfall, with approximately 265 mm of precipitation and frequent rainy days—20 in August and 21 in September. However, the temperature sees a notable drop from August to September. While August enjoys warmer averages, with a minimum of 18°C (64°F) and a maximum of 33°C (91°F), September cools down to a minimum of 13°C (56°F) and an average high of 32°C (90°F). Humidity levels remain high in both months, but slightly decrease from 92% in August to 89% in September. For a detailed look at September's weather in the region, visit Itoigawa weather in September.
The weather in August contrasts significantly with that of October. In August, temperatures range from a minimum of 18°C (64°F) to a maximum of 33°C (91°F), with an average of 26°C (78°F), reflecting the peak of summer heat. The month experiences high humidity at 92% and substantial rainfall, totaling 265 mm (10.4 in) over 20 days. In contrast, October sees cooler temperatures, with a minimum of 8°C (47°F) and a maximum of 28°C (82°F), averaging 16°C (62°F). Although precipitation remains relatively high at 258 mm (10.2 in), it occurs over fewer days, totaling 18. The humidity also decreases slightly to 87%. For more detailed information, you can visit Itoigawa weather in October.
August and November present contrasting weather patterns. In August, temperatures are much warmer, ranging from a minimum of 18°C (64°F) to a maximum of 33°C (91°F), with an average of 26°C (78°F). This month experiences significant rainfall, with 265 mm (10.4 inches) spread over 20 days and high humidity at 92%. In contrast, November temperatures are considerably cooler, with lows dropping to 0°C (32°F) and highs reaching up to 22°C (71°F), averaging 11°C (51°F). While November sees less precipitation at 185 mm (7.3 inches) over 19 days, the humidity is slightly lower at 85%. For more detailed information, you can check Itoigawa weather in November.
In August, the weather in Itoigawa is characterized by warm temperatures, with a minimum of 18°C (64°F), an average of 26°C (78°F), and a maximum of 33°C (91°F). The high humidity of 92% and significant precipitation, totaling 265 mm (10.4 in) over 20 days, contribute to a muggy atmosphere. In contrast, December brings a stark change, with much colder conditions—temperatures ranging from a minimum of -4°C (26°F) to a maximum of 18°C (65°F) and an average of 4°C (40°F). Precipitation slightly increases to 294 mm (11.6 in) over 24 days, accompanied by lower humidity at 86%. For more detailed insights into December weather, you can visit Itoigawa weather in December.
August in Itoigawa marks the peak of summer, characterized by warm temperatures and high humidity that contrast sharply with the milder conditions of other months. With the mercury often topping 33°C (91°F) and an average of 26°C (78°F), August brings a vibrant energy, though it is paired with increased precipitation—over 20 days of rain contribute to a total of 265 mm (10.4 in). This blend of warmth and moisture creates a lush environment, setting August apart as a month of abundant growth and activity. For detailed insights into the regional climate, visit Itoigawa Climate.