Last updated: August 21, 2025
In Iwakuni, Japan, July brings a vibrant summer atmosphere characterized by warm temperatures and high humidity. The mercury can soar to a maximum of 35°C (95°F), while the average hovers around 26°C (79°F), providing ample opportunities for outdoor activities. However, the month is also marked by significant rainfall, with total precipitation reaching 386 mm (15.2 in) over 19 days, making it one of the wettest months of the year. With humidity levels soaring to 95%, visitors should be prepared for a sticky, tropical feel that accompanies these summer showers. Overall, July in Iwakuni is a blend of hot days and occasional downpours, creating a lush and lively backdrop for exploration and enjoyment.
In Iwakuni, Japan, July marks the peak of summer with temperatures reaching thrilling heights. The month begins with a minimum temperature of 18°C (65°F) and escalates to a max of an impressive 35°C (95°F). This vibrant warmth is accompanied by an average temperature of 26°C (79°F), making July one of the hottest months of the year. Compared to the gradual warming trend observed from earlier months—where temperatures steadily rise from a chilly 5°C (42°F) in January to a more temperate 22°C (72°F) in June—July's heat truly signifies the arrival of summer's embrace. As the days grow longer and the sun shines brighter, Iwakuni transforms into a lively scene of summer activities, inviting residents and visitors alike to enjoy the season's warmth.
In July, Iwakuni experiences a significant surge in precipitation, with 386 mm (15.2 in) of rain falling over 19 days—the highest monthly total of the year. This deluge contributes to the summer humidity, marking a stark contrast to the lighter rain of earlier months. Following a gradual build-up from January's 49 mm to June's 181 mm, July showcases nature's abundant gift, as thunderstorms often characterize the season. The rain in July not only supports the lush landscapes but also reflects the peak of Japan's wet season, setting the stage for the subsequent, yet still substantial, rainfall in August with 256 mm. The sheer volume and frequency of rain in July encapsulate the interplay between seasonal transitions and weather dynamics, creating a vibrant atmosphere throughout the region.
In Iwakuni, Japan, July marks the peak of humidity, reaching an impressive 95%. This follows a steady upward trend that begins in the early months of the year, where the humidity starts at a more manageable 76% in January. As the seasons transition, noticeable increases occur, particularly from May onward, when the humidity spikes dramatically to 84% in May and continues to rise through the summer months. By June, the atmosphere becomes quite muggy at 88%, setting the stage for July's discomforting peak. As summer wanes, humidity begins to decrease, but even in August, it remains a high 93%, illustrating Iwakuni's characteristic warm and sticky climate during the peak of summer. Overall, the trend reveals a clear pattern of increasing moisture that defines the region's humid subtropical climate.
In July, Iwakuni experiences its peak UV Index, reaching a notable 12, categorizing it as extreme. This heightened level reflects a continuing trend from the previous months of high UV exposure, as June and May also maintained an index of 11. As summer sets in, the risk of skin damage increases, shortening the safe burn time to a mere 10 minutes. This pattern of escalated UV levels beginning in spring and peaking in midsummer emphasizes the importance of sun protection. Visitors and residents alike should remain vigilant, especially during this intense period. For more detailed information about UV levels throughout the year, check out the comprehensive guide on the Iwakuni UV Index.
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In Iwakuni, Japan, July shines brightly with 281 hours of sunlight, marking a peak in warmth and outdoor activity that lingers through the summer months. Following June’s 291 hours, the sun begins to retreat slightly, yet July remains vibrant, paving the way toward August's outstanding 308 hours. This steady rise in sunlight hours from the early months, like January’s 184 hours and February’s 227 hours, illustrates a beautiful transition into the summer season. As nature thrives, locals and visitors alike can bask in the warm embrace of sunshine, embodying the essence of summer in this enchanting Japanese city.
July in Iwakuni, Japan, marks a notable dip in the chances of sunny weather, with only a 23% likelihood of clear skies. This trend is part of a broader pattern, where the summer months often bring a decrease in sunshine, contrasting sharply with the more favorable conditions of late autumn and early winter. For instance, while June shows a relatively low 25% chance of sun, it dwindles even further in July, highlighting the region's tendency towards overcast skies during this time of year. As we look ahead to August, conditions remain similarly muted with a 25% chance of sunshine, suggesting that those seeking bright, sunny days may want to plan their visits for the more favorable months of October and November, when chances rise significantly to 59% and 52%, respectively.
In Iwakuni, Japan, the daylight duration reaches a peak of 14 hours in July, matching the preceding month of June. This trend highlights the gradual increase in daylight as spring transforms into summer, with April and May enjoying 13 hours of daylight. Following the height of summer, there is a gentle decline in daylight as August brings back 13 hours, leading into the shorter days of autumn. As the year progresses toward winter, daylight dwindles to 10 hours in November and further narrows to just 9 hours by December. This rhythmic ebb and flow of daylight not only marks the changing seasons but also shapes the daily life and activities of the region's residents.
In Iwakuni, Japan, July brings a refreshing change with an average wind speed of 2.0 m/s (5 mph), a slight increase from June's calmer conditions. This month typically experiences a gentle breeze, signaling the transition from the milder spring and early summer months. Compared to the earlier spring months, where winds hovered around 2.8 m/s (6 mph), July's winds are notably softer, offering a more tranquil atmosphere as the heat of summer sets in. Interestingly, as the year progresses towards the late summer and autumn, average wind speeds generally rise again, reaching 2.6 m/s (6 mph) in August. Overall, July’s breeze provides a pleasant respite, balancing warmth with a subtle touch of refreshment.
Weather in Iwakuni varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Iwakuni, focusing on differences in temperature, rainfall, humidity, and UV levels.
In July, the weather is characterized by high temperatures, with minimums around 18°C (65°F) and maximums reaching up to 35°C (95°F), creating a warm and humid environment with an average of 26°C (79°F). Precipitation is frequent, with rain on about 19 days and a total of 386 mm (15.2 in), resulting in a muggy atmosphere with humidity levels soaring to 95%. In contrast, January offers a much cooler climate, where temperatures drop significantly, with minimums around -4°C (25°F) and maximums capping at 15°C (59°F), averaging just 5°C (42°F). Rainfall is minimal, totaling only 49 mm (1.9 in) over approximately 6 days, and humidity is lower at 76%. For more details, you can check Iwakuni weather in January.
July and February present stark contrasts in weather, showcasing the diversity of seasonal climates. In July, temperatures soar with a minimum of 18°C (65°F) and an average of 26°C (79°F), peaking at a sweltering 35°C (95°F). This month is characterized by high humidity at 95% and significant precipitation, with 386 mm (15.2 in) falling over 19 days. In contrast, February experiences a much cooler climate, with temperatures ranging from a minimum of -4°C (26°F) to a maximum of 20°C (68°F), averaging just 6°C (43°F). The month is drier, receiving only 69 mm (2.7 in) of rain across 7 days and lower humidity at 72%. For a deeper understanding of February’s climate, you can explore Iwakuni weather in February.
When comparing the weather in July and March, a stark contrast is evident. July boasts warm temperatures, with a minimum of 18°C (65°F) and an average of 26°C (79°F), reaching up to a sweltering maximum of 35°C (95°F). However, it also experiences significant rainfall, totaling 386 mm (15.2 in) over 19 days, alongside high humidity of 95%. In contrast, March is much cooler, with temperatures ranging from a chilly minimum of 1°C (33°F) to a pleasant maximum of 22°C (71°F) and an average of 10°C (50°F). March sees less precipitation, with only 125 mm (4.9 in) over 10 days and lower humidity at 69%. For a more detailed look at the weather in March, you can visit Iwakuni weather in March.
July and April present stark contrasts in weather characteristics. In July, temperatures soar with a minimum of 18°C (65°F) and an average of 26°C (79°F), reaching highs of up to 35°C (95°F). This month also experiences significant rainfall, with 386 mm (15.2 in) spread over 19 days and a high humidity level of 95%. In contrast, April welcomes cooler temperatures, with a minimum of 2°C (36°F) and an average of 14°C (58°F). The month enjoys milder conditions, peaking at 24°C (76°F), while also recording less precipitation at 137 mm (5.4 in) over just 9 days and maintaining a lower humidity of 75%. For more details on April’s weather, you can visit Iwakuni weather in April.
July and May present quite contrasting weather patterns. In July, temperatures soar, with daily highs averaging around 26°C (79°F) and reaching up to 35°C (95°F), while the minimum temperature stays at a warm 18°C (65°F). In stark contrast, May experiences much cooler temperatures, with an average of 19°C (66°F) and a maximum of 28°C (83°F), while the nighttime lows can drop to 7°C (45°F). Additionally, July is marked by significantly higher precipitation, with 386 mm (15.2 in) falling over 19 days, compared to May's 136 mm (5.4 in) over just 9 days. The humidity is also notably higher in July at 95%, compared to May’s 84%, making for a much more oppressive atmosphere. For a detailed look at May weather, check out Iwakuni weather in May.
In comparing the weather between July and June, July presents notably higher temperatures, with a minimum of 18°C (65°F) and an average of 26°C (79°F) compared to June's minimum of 14°C (57°F) and average of 22°C (72°F). July also sees a greater maximum temperature of 35°C (95°F), whereas June peaks at 29°C (85°F). Precipitation is significantly higher in July, totaling 386 mm (15.2 in) over 19 days, compared to June's 181 mm (7.1 in) over 14 days. Additionally, the humidity rises in July to 95%, up from June's 88%. For more details on June weather, you can check Iwakuni weather in June.
July and August display notable differences in weather patterns. In July, temperatures range from a minimum of 18°C (65°F) to a maximum of 35°C (95°F), with an average of 26°C (79°F). The month also experiences significant rainfall, totaling 386 mm (15.2 in) over 19 days, accompanied by high humidity levels of 95%. In contrast, August sees slightly warmer temperatures, starting at a minimum of 20°C (67°F) and peaking at 35°C (96°F), with an average of 28°C (82°F). Precipitation decreases to 256 mm (10.1 in) over 14 days, and humidity levels remain high but slightly lower at 93%. For more detailed information, you can check Iwakuni weather in August.
July and September present distinct contrasts in weather patterns. In July, temperatures are typically warmer, with averages around 26°C (79°F) and maximums reaching up to 35°C (95°F). However, this month also sees substantial rainfall, totaling 386 mm (15.2 in) over about 19 days, coupled with high humidity levels at 95%. In comparison, September experiences slightly cooler temperatures, averaging 24°C (75°F) and peaking at 33°C (92°F). Precipitation is reduced to 237 mm (9.3 in) over just 14 days, and humidity levels are lower at 84%. For more detailed insights, you can check out Iwakuni weather in September.
In July, the weather is notably warmer, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 35°C (95°F), accompanied by high humidity levels of 95%. This month also experiences considerable rainfall, with 386 mm (15.2 in) of precipitation spread over 19 days. In contrast, October brings a significant drop in temperatures, averaging 19°C (66°F) and peaking at 29°C (85°F). The humidity decreases to 79%, and the amount of precipitation is lower, totaling 172 mm (6.8 in) over just 10 days. For more information, you can check Iwakuni weather in October.
July and November exhibit vastly different weather patterns. In July, temperatures soar with a minimum of 18°C (65°F) and an average high reaching 35°C (95°F), accompanied by high humidity levels at 95%. The month experiences significant rainfall, totaling 386 mm (15.2 in) over 19 days, creating a rather wet and steamy atmosphere. In contrast, November offers a much cooler climate, with temperatures ranging from a chilly minimum of 2°C (36°F) to a comfortable maximum of 23°C (74°F) and an average of 13°C (55°F). Rainfall is significantly reduced to just 37 mm (1.5 in), falling over only 5 days, and humidity drops to a more moderate 76%. For more details on this month's climate, you can visit Iwakuni weather in November.
July and December present stark contrasts in weather. In July, temperatures soar with a minimum of 18°C (65°F) and an average of 26°C (79°F), peaking at a sweltering 35°C (95°F). Humidity is high at 95%, accompanied by significant rainfall of 386 mm (15.2 in) over 19 days, creating a steamy atmosphere. In contrast, December offers a much cooler climate, with temperatures ranging from a chilling minimum of -1°C (31°F) to an average of 7°C (46°F) and a maximum of 20°C (69°F). Precipitation is minimal at 61 mm (2.4 in) across just 6 days, and humidity drops to a more comfortable 75%. For more detailed insights into the December weather in Iwakuni, visit Iwakuni weather in December.
July in Iwakuni is characterized by sweltering heat and high humidity, setting it apart from the more temperate months of the year. With temperatures soaring up to 35°C and an average of 26°C, the summer heat is palpable, making it a stark contrast to the mildness of spring and autumn. The month also sees significant rainfall, with 19 days of precipitation contributing to a humid environment that can feel quite oppressive. This combination of warmth and moisture creates a distinctly tropical atmosphere, inviting both challenges and unique experiences for residents and visitors alike. For more detailed insights on climate patterns throughout the year, visit Iwakuni Climate.