Last updated: August 21, 2025
July in Izu, Japan is characterized by warm temperatures and high humidity, making it a vibrant summer destination. With maximum temperatures reaching up to 33°C (92°F) and an average of 25°C (77°F), the days are both hot and inviting. However, the region experiences significant weather variability, recording 326 mm (12.8 in) of precipitation over 19 days, making rain a common occurrence. Humidity levels soar to 93%, adding a tropical feel to the atmosphere. Visitors should come prepared for both sunshine and sudden showers, ensuring an adventurous summer experience in this picturesque locale.
July in Izu, Japan, marks the height of summer, where temperatures begin to sizzle and the vibrant outdoor life flourishes. With a minimum of 18°C (65°F), the evenings remain pleasantly warm, while daytime averages soar to a balmy 25°C (77°F), creating the perfect backdrop for exploration. The maximum temperatures reach a blistering 33°C (92°F), enticing beachgoers and outdoor enthusiasts alike to soak up the sun. This month showcases a clear upward trend from June, signifying not just higher temperatures, but a shift into a lively season filled with festivals and seaside activities. As the warmth envelops Izu, both locals and visitors revel in the lively atmosphere, making the most of the long, sunlit days.
In Izu, Japan, July stands out as the wettest month of the year, with precipitation soaring to 326 mm (12.8 in) over approximately 19 days of rain. This significant rainfall marks a sharp increase from June's 263 mm, highlighting the onset of the summer monsoon season. The region experiences not only a higher volume of rain but also a greater number of rainy days compared to the preceding months, which usually receive less sustained precipitation. Following July, August sees a substantial drop to 176 mm (6.9 in), alongside a decrease in rainy days, indicating the peak of the rainy season is fleeting yet intense in Izu. This pattern emphasizes the region’s climate variability, where July's abundant rains nurture the lush landscapes, setting the stage for the temperate beauty that characterizes Izu.
In Izu, Japan, July marks a significant peak in humidity, reaching an impressive 93%. This sharp rise comes after a steady increase throughout the previous months, with June already seeing high humidity at 88%. In contrast to the drier early months of the year, where humidity levels hovered around the mid-70s, summer brings a palpable shift. Notably, both July and August remain the most humid months, suggesting that if you’re planning a visit during this time, you'll want to be prepared for the muggy atmosphere. As the seasons transition into autumn, humidity gradually decreases, ending the year with more comfortable levels, but July certainly stands out as the peak of this moist climate.
As summer peaks in July, Izu, Japan, experiences an intense UV Index of 12, categorizing it as extreme and sharply reducing safe sun exposure to just 10 minutes. This trend marks a continuation of elevated UV levels observed since May, when the index reached its first extreme rating. Following a steady climb from a moderate 4 in January, each month has brought increasingly aggressive UV radiation. June and July both hold firm at the extreme rating, reminding residents and visitors alike to prioritize sun safety. For those planning outdoor activities, it’s crucial to be vigilant about protection during these sun-drenched days. To learn more about UV exposure trends throughout the year, visit Izu UV Index.
UV Risk Categories
In July, Izu, Japan, basks under 229 hours of glorious sunshine, characteristic of its warm and vibrant summer months. While this is slightly lower than June’s impressive 253 hours, it still marks a continuation of the region's sunny spell that began in late spring. The trend showcases a gradual increase in daylight from the dreary winter months, with sunshine peaking in August at 285 hours. This steady rise through spring and into summer not only enriches the lush landscapes of Izu but also invites a plethora of outdoor activities and cultural festivals, making it a prime time for visitors to soak in the natural beauty of the region.
In Izu, Japan, the likelihood of experiencing sunny weather in July sees a modest 30% chance, which is part of a broader trend of fluctuating sunshine throughout the year. The region typically enjoys its highest sun probabilities in the winter months, with January and December featuring impressive chances of 59% and 72%, respectively. As the seasons transition into summer, the chances of sunshine dip, reaching a low of 22% in June and barely increasing in July. However, this brief sunshine lull gives way to slightly better conditions in August, where the likelihood of sunny weather climbs to 33%. Thus, while July may not be the sunniest spot on the calendar, it serves as a gentle reminder of the shifting seasonal dynamics that characterize Izu's weather.
In July, Izu, Japan basks in 14 hours of daylight, maintaining the longer days that began in the spring. This month marks the peak of summer, as daylight duration stabilizes after a gradual increase from 10 hours in January to 14 hours by June. Following July, daylight begins to wane slightly into August, but still retains a generous 13 hours. This pattern highlights Izu's vibrant summer, where longer days invite outdoor adventures and exploration, before the seasonal shift towards shorter daylight hours in the fall.
In Izu, Japan, the wind takes on a gentle character in July, maintaining a consistent average speed of 2.0 m/s (approximately 5 mph). This marks a continuation of the lower wind speeds seen in the preceding months of June and July, which both feature similarly calm conditions. Compared to earlier spring months, where wind speeds peaked around 3.0 m/s in May, July’s breeziness offers a serene atmosphere perfect for escaping the summer heat. Interestingly, as the summer progresses into August, the wind picks up slightly, reaching an average of 2.9 m/s (7 mph), suggesting a gradual return to a more breezy climate that characterizes the late summer months. This subtle ebb and flow of wind speeds not only highlights seasonal transitions but also enhances the natural beauty of Izu’s picturesque landscapes.
Weather in Izu varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Izu, focusing on differences in temperature, rainfall, humidity, and UV levels.
July and January present starkly contrasting weather patterns. In July, temperatures typically range from a minimum of 18°C (65°F) to a maximum of 33°C (92°F), with an average of 25°C (77°F). This month is characterized by high humidity at 93% and significant rainfall, receiving about 326 mm (12.8 in) over 19 days. In contrast, January sees much cooler temperatures, ranging from a minimum of -2°C (29°F) to a maximum of 18°C (64°F), averaging 7°C (44°F). Precipitation drops significantly to 68 mm (2.7 in) over just 5 days, with lower humidity at 76%. For more detailed insights on January weather, you can visit Izu weather in January.
In comparing the weather between July and February, one can observe a stark contrast in temperatures and precipitation levels. July experiences significantly warmer weather, with minimum temperatures of 18°C (65°F) and maximums reaching up to 33°C (92°F), while February showcases a much cooler range, where temperatures dip as low as -1°C (30°F) and peak at 19°C (67°F). Additionally, July is characterized by high humidity at 93% and considerable rainfall, receiving 326 mm (12.8 in) across 19 days, whereas February sees much less precipitation at 83 mm (3.2 in) over only 8 days, alongside a lower humidity of 74%. For more information about Izu's February climate, visit Izu weather in February.
July and March showcase a stark contrast in weather conditions. In July, temperatures soar with a minimum of 18°C (65°F) and an average of 25°C (77°F), reaching a peak of 33°C (92°F), creating a warm and humid atmosphere with an average humidity of 93%. Precipitation is significant during this month, totaling 326 mm (12.8 in) over 19 days. In contrast, March experiences much cooler weather, with temperatures ranging from a minimum of 1°C (34°F) to an average of 11°C (51°F) and a maximum of 22°C (72°F). The month is characterized by less rainfall, accumulating 196 mm (7.7 in) across 13 days, and a more moderate humidity level of 70%. For detailed insights on March weather, you can refer to Izu weather in March.
In comparing the weather of July and April, it's clear that July is significantly warmer and more humid. With average temperatures ranging from a minimum of 18°C (65°F) to a maximum of 33°C (92°F), July sees much higher heat compared to April's milder temperatures, which range from a minimum of 3°C (38°F) to a maximum of 24°C (76°F). Additionally, July experiences a substantial amount of rainfall, with 326 mm (12.8 in), falling over 19 days, while April's precipitation is noticeably lower at 168 mm (6.6 in) over 11 days. This results in a more humid environment in July, with humidity levels at 93%, compared to April's more comfortable 74%. For further details on April's weather, you can check out Izu weather in April.
In comparison, July generally boasts warmer temperatures, with minimums around 18°C (65°F) and maximums reaching up to 33°C (92°F), contrasted with May's milder range of 9°C (48°F) to 28°C (82°F). July also experiences higher humidity levels at 93%, significantly more than May's 81%. Additionally, the summer month sees increased precipitation, averaging 326 mm (12.8 in) over 19 days, compared to May's 194 mm (7.6 in) spread over just 12 days. For a closer look at the May climate, check out Izu weather in May.
When comparing the weather of June and July, July tends to be warmer and more humid. In July, temperatures range from a minimum of 18°C (65°F) to a maximum of 33°C (92°F), with an average temperature of 25°C (77°F). In contrast, June has slightly cooler temperatures, with a minimum of 15°C (59°F), a maximum of 29°C (85°F), and an average of 21°C (71°F). Additionally, July experiences more precipitation, totaling 326 mm (12.8 in) over 19 days, compared to June’s 263 mm (10.3 in) over 17 days. The humidity in July is also higher at 93%, compared to June’s 88%. For more details about June weather in Izu, visit Izu weather in June.
In comparing the weather of July and August, July tends to be slightly warmer with average temperatures ranging from 18°C (65°F) to a maximum of 33°C (92°F). It also experiences higher precipitation levels, with 326 mm (12.8 in) falling over 19 days, contributing to a humidity level of 93%. In contrast, August sees a marginal increase in both minimum and average temperatures, from 20°C (68°F) to 27°C (81°F), with a peak of 34°C (94°F). Precipitation decreases significantly to 176 mm (6.9 in) over 17 days, resulting in lower humidity at 90%. For more specifics on August weather conditions, you can visit this Izu weather in August link.
July and September present contrasting weather patterns, despite both months experiencing warm temperatures. In July, temperatures range from a minimum of 18°C (65°F) to a maximum of 33°C (92°F), with an average of 25°C (77°F). This month also sees significant rainfall, totaling 326 mm (12.8 in) across 19 days and high humidity levels at 93%. In contrast, September has a slightly cooler feel, with temperatures decreasing to a minimum of 15°C (60°F) and an average of 23°C (74°F), while still reaching a maximum of 33°C (91°F). Precipitation in September is lower at 221 mm (8.7 in) over 20 days, and humidity drops to 86%. For more detailed information, check out Izu weather in September.
July and October present distinct contrasts in weather. In July, temperatures range from a minimum of 18°C (65°F) to a scorching maximum of 33°C (92°F), accompanied by high humidity levels at 93%. This month also sees significant rainfall, with a total precipitation of 326 mm (12.8 in) over 19 days. In contrast, October experiences cooler temperatures, with a minimum of 11°C (52°F) and a maximum of 29°C (84°F), resulting in a more moderate average of 19°C (66°F). Although precipitation in October is slightly lower at 305 mm (12.0 in) over 16 days, the humidity decreases to a more comfortable 83%. For more insights on the October climate, visit Izu weather in October.
July and November present strikingly different weather conditions. In July, temperatures range from a minimum of 18°C (65°F) to a sweltering maximum of 33°C (92°F), with an average of 25°C (77°F). The month is characterized by high humidity at 93% and significant rainfall, with 326 mm (12.8 in) spread over 19 days. In contrast, November experiences much cooler temperatures, with a minimum of 3°C (38°F) and an average of 14°C (58°F), reaching a maximum of 22°C (72°F). This month receives significantly less precipitation, totaling 94 mm (3.7 in) over 10 days, and has a lower humidity level of 80%. For more detailed information about the weather in November, you can visit Izu weather in November.
In July, the weather is significantly warmer and more humid, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 33°C (92°F) and an average of 25°C (77°F). This month experiences frequent rainfall, with precipitation occurring on 19 days and totalling 326 mm (12.8 in), contributing to a high humidity level of 93%.
In contrast, December presents a much cooler climate, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 21°C (69°F) and an average of 9°C (49°F). Rainfall is considerably less, with only 74 mm (2.9 in) of precipitation over 8 days, resulting in a lower humidity of 78%. For more insights into the December climate, visit Izu weather in December.
July in Izu showcases a vibrant transformation as summer reaches its peak. The temperatures soar, offering warmth and inviting beachgoers to enjoy the region's stunning coastline. However, this month is also marked by significant rainfall, with nearly two-thirds of the days experiencing precipitation, leading to a lush, verdant landscape that contrasts with the dry spells of other months. The high humidity levels create a steamy atmosphere, making July feel even hotter, unlike the cooler months that follow. This unique blend of warmth and moisture not only shapes the local environment but also enhances the unforgettable experience of summer in Izu. For more details about the overall climate, visit Izu Climate.