Last updated: August 21, 2025
Izu, Japan, in August presents a warm and humid climate, with maximum temperatures soaring up to 34°C (94°F) and an average of 27°C (81°F), while nighttime lows typically sit around 20°C (68°F). The region experiences significant rainfall, accumulating to 176 mm (6.9 in) over 17 days, making it essential to plan for occasional showers amidst the heat. Visitors should be prepared for a steamy atmosphere with humidity levels reaching 90%, which can enhance the sultry feeling of the summer days in this beautiful coastal destination.
In August, Izu, Japan experiences its warmth peak, with temperatures ranging from a pleasant 20°C (68°F) at night to a sizzling 34°C (94°F) during the day. This month showcases a significant rise in warmth compared to earlier summer months, with the average temperature hitting 27°C (81°F). The steady increase in both minimum and maximum temperatures from previous months highlights Izu's transformation into a vibrant summer destination. As the mercury climbs, the area pulses with life, inviting visitors to revel in its lush landscapes and enchanting beaches while enjoying the sun-drenched days and mild nights.
In August, Izu, Japan experiences a notable precipitation drop compared to the previous month, with a total of 176 mm (6.9 in) of rain, marking a decrease from 326 mm in July. The 17 days of rainfall this month keeps the lush landscape vibrant, yet the overall weather begins to hint at the tail end of the summer's rainier season. August's precipitation pattern appears to align with a typical trend in Izu, where rainfall starts to taper off before the transition into the wetter months of autumn. As the region prepares for September's anticipated increase to 221 mm, the moisture-laden air still fuels the rich greenery that makes Izu an enchanting destination during the summer.
In Izu, Japan, August brings a notable humidity level of 90%, maintaining the high moisture trend seen in the summer months. The year's humidity begins to climb significantly from the comfortable levels of January and February, where readings hover around 76% and 74%, respectively. As spring transitions into summer, humidity swells, reaching 88% in June and peaking at 93% in July. Although August sees a slight decline from this peak, it remains elevated, emphasizing the region's muggy atmosphere during peak summer. Following August, humidity gradually decreases into September and October, but stays relatively high through the autumn months. This persistent humidity pattern underscores Izu's tropical climate, making it a lush and vibrant destination in the summer heat.
In August, Izu, Japan, experiences a notably high UV Index of 11, classified as extreme, which means sun safety precautions are essential for visitors and locals alike. This level of intensity continues the trend set from May to July, where an UV Index of 11 and 12 indicated a critical need for protection against sun exposure, with a burn time of just 10 minutes. As summer progresses, it’s crucial to stay vigilant against harmful UV rays, particularly in this sun-soaked coastal region. By September, the UV Index begins to taper off to 10, representing a shift back to very high exposure, allowing for slightly longer burn times of 15 minutes. This downward trend in UV intensity post-August suggests a seasonal shift, reassuring sun seekers that relief is on the horizon. For more information on UV levels throughout the year, visit the detailed Izu UV Index.
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In August, Izu, Japan basks in an impressive 285 hours of sunshine, making it the sunniest month of the year. This follows a pattern of increasing daylight, with each month from January through May enjoying a steady rise in sunshine hours, reaching a peak in late summer. After May’s 282 hours, the region experiences a slight decline in July, but August brings a vibrant resurgence, showcasing the region’s warm and inviting climate. As summer transitions to autumn, September’s 236 hours still offers substantial sunlight, although the overall trend indicates a gradual decrease as the year progresses. This captivating dance of sunshine reflects Izu's unique charm, drawing visitors to its beautiful landscapes and tranquil shores.
In Izu, Japan, the likelihood of sunny weather in August stands at 33%, reflecting a slight increase from the typically overcast conditions of the summer months. While July offers only a 30% chance for sunshine, August still lags behind many other months, especially when compared to the brighter days of January and December, which boast probabilities of 59% and 72% respectively. As we transition into autumn, September shows a marginal improvement to 31%, hinting at a potential return of clearer skies. Overall, while August may not be synonymous with sunshine, it holds more promise than the rainy spells of the earlier summer, inviting visitors to embrace the warmth and explore Izu's stunning landscapes amidst intermittent rays of sun.
In Izu, Japan, August marks a gentle transition as daylight begins to wane, with the sun gracing the landscape for approximately 13 hours. This follows the peak summer months of June and July, where daylight reaches a robust 14 hours. Observing the trends throughout the year, there is a gradual increase in daylight starting from 10 hours in January, peaking in late spring and early summer before a steady decline into autumn and winter. Overall, the shift from long summer days to shorter fall ones offers a fascinating rhythm of nature that residents and visitors alike can appreciate throughout the year.
In August, Izu, Japan, experiences a refreshing average wind speed of 2.9 m/s (7 mph), reflecting a mild breeze that contrasts with the bustling heat of summer. Notably, August's wind is a slight recovery from the calmness of June and July, which both recorded a gentle 2.0 m/s (4-5 mph). This uptick continues into September, maintaining the same speed, which suggests a transition towards the more active winds of autumn. Over the year, the wind speeds fluctuate, with the lowest point occurring in March at 2.6 m/s (6 mph), while winter months offer robust gusts reaching 3.3 m/s (7 mph) in both January and December. Overall, while August's winds may not be the strongest of the year, they deliver a pleasant comfort that complements the vibrant landscape of Izu, making it an ideal time for exploration and relaxation.
Weather in Izu varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Izu, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January showcase strikingly contrasting weather patterns. In August, the temperatures soar with a minimum of 20°C (68°F) and an average of 27°C (81°F), peaking at a sweltering 34°C (94°F). This month also brings significant rainfall, totaling 176 mm (6.9 inches) over 17 rainy days, accompanied by high humidity levels at 90%. In stark contrast, January experiences much cooler conditions, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 18°C (64°F), averaging 7°C (44°F). Precipitation is lighter, at 68 mm (2.7 inches) over just 5 days, and the humidity is notably lower at 76%. For a closer look at January weather in this region, you can explore Izu weather in January.
August and February present stark contrasts in weather conditions. In August, the temperature ranges from a minimum of 20°C (68°F) to a maximum of 34°C (94°F), with an average of 27°C (81°F). The high humidity of 90% and significant precipitation of 176 mm (6.9 in) over 17 days make August feel quite warm and damp. In contrast, February boasts a much cooler climate, with temperatures ranging from a chilly -1°C (30°F) to a milder 19°C (67°F), averaging around 7°C (45°F). The month also sees less rainfall, with only 83 mm (3.2 in) distributed over 8 days, and lower humidity at 74%. For more detailed information, you can check out Izu weather in February.
August and March present stark differences in weather conditions. In August, temperatures soar, ranging from a minimum of 20°C (68°F) to a maximum of 34°C (94°F), with an average of 27°C (81°F). This month is characterized by high humidity at 90% and significant rainfall, accumulating 176 mm (6.9 in) over 17 days. In contrast, March experiences much cooler temperatures, with a minimum of 1°C (34°F) and a maximum of 22°C (72°F), averaging 11°C (51°F). Although March has slightly higher precipitation at 196 mm (7.7 in) over 13 days, the humidity is considerably lower at 70%. For a detailed look at the March weather specifics, you can check Izu weather in March.
In comparing the weather of August and April, it's clear that August is significantly warmer and more humid. While August features temperatures ranging from a minimum of 20°C (68°F) to a maximum of 34°C (94°F), April's temperatures are much cooler, with a minimum of 3°C (38°F) and a maximum of 24°C (76°F). Both months experience substantial rainfall, with August receiving about 176 mm (6.9 in) over 17 days and April closely trailing with 168 mm (6.6 in) over 11 days. However, the humidity in August reaches a high of 90%, compared to a more moderate 74% in April. For more details on the weather conditions in April, you can visit Izu weather in April.
In comparing the weather of August and May, August stands out with significantly higher temperatures, ranging from a minimum of 20°C (68°F) to a maximum of 34°C (94°F), while May offers a cooler climate with temperatures between 9°C (48°F) and 28°C (82°F). Though May has slightly higher precipitation at 194 mm (7.6 in) over 12 days, August experiences frequent rainfall, totaling 176 mm (6.9 in) over 17 days, alongside higher humidity levels at 90% compared to May's 81%. For a closer look at May's weather specifics, check out Izu weather in May.
When comparing the weather in August and June, August tends to be warmer, with average temperatures reaching 27°C (81°F) and highs of up to 34°C (94°F), while June has a cooler average of 21°C (71°F) and maximum temperatures of 29°C (85°F). Despite August's higher temperatures, it also experiences significant rainfall, totaling 176 mm (6.9 in) over 17 days, whereas June has a greater amount of precipitation at 263 mm (10.3 in) with the same number of rainy days. Humidity levels are relatively high in both months, with August at 90% and June slightly lower at 88%. For more detailed climate information, check out Izu weather in June.
In comparing the weather of August and July, we see that August features slightly warmer temperatures, with a minimum of 20°C (68°F), an average of 27°C (81°F), and a maximum of 34°C (94°F), compared to July's minimum of 18°C (65°F), average of 25°C (77°F), and maximum of 33°C (92°F). However, July experiences significantly higher precipitation, totaling 326 mm (12.8 in) over 19 days, whereas August receives 176 mm (6.9 in) across 17 days. Humidity levels are also marginally lower in August at 90%, compared to 93% in July. For a detailed look at July weather, you can check Izu weather in July.
In August, the weather tends to be warmer with average temperatures reaching 27°C (81°F) and maximum highs of 34°C (94°F). The month is characterized by high humidity levels of 90% and considerable rainfall, accumulating 176 mm over 17 days. In contrast, September sees a decline in temperatures, with averages dropping to 23°C (74°F) and a minimum of 15°C (60°F). However, it also experiences more rain, totaling 221 mm over 20 days, while humidity remains slightly lower at 86%. For a more detailed look at September weather, you can check Izu weather in September.
August and October offer contrasting weather experiences. In August, temperatures soar with a minimum of 20°C (68°F) and an average high of 34°C (94°F), accompanied by high humidity at 90%. This month sees substantial rainfall, averaging 176 mm (6.9 in) over 17 days. In contrast, October presents a cooler climate, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 29°C (84°F) and an average of 19°C (66°F). While October has a higher total precipitation of 305 mm (12.0 in), it spreads over just 16 days, resulting in slightly lower humidity at 83%. For more detailed insights, visit Izu weather in October.
In August, the weather is notably warm and humid, with average temperatures around 27°C (81°F) and maximum highs reaching up to 34°C (94°F). This month sees substantial rainfall, with 176 mm (6.9 in) of precipitation over 17 days, contributing to a high humidity level of 90%. In contrast, November brings a significant drop in temperature, with an average of 14°C (58°F) and maximum temperatures capping at 22°C (72°F). The month experiences less rainfall, totaling 94 mm (3.7 in) over just 10 days, and the humidity decreases to 80%. For a closer look at the November weather conditions in Izu, you can check Izu weather in November.
August and December present stark contrasts in weather. In August, temperatures typically range from a minimum of 20°C (68°F) to a maximum of 34°C (94°F), with an average of 27°C (81°F). This month is also characterized by high humidity levels at 90% and significant rainfall, totaling 176 mm (6.9 in) over about 17 days. In contrast, December experiences much cooler temperatures, with a minimum of 0°C (32°F), an average of 9°C (49°F), and a maximum of 21°C (69°F). Precipitation decreases significantly to 74 mm (2.9 in) over just 8 days, and humidity levels drop to 78%. For further details, you can check Izu weather in December.
August in Izu transforms the region into a vibrant summer escape, marked by high temperatures and significant humidity that set it apart from other months. As the warmest time of the year, it boasts an average temperature of 27°C, enticing visitors to bask in the lush landscapes. However, with an average of 17 days of precipitation, the skies can also deliver unexpected showers, making it essential to be prepared for moisture amidst the heat. The blend of warmth and humidity creates a unique climate, perfect for exploration and relaxation. For detailed information on how Izu's weather varies throughout the year, check out the full Izu Climate guide.