Last updated: August 21, 2025
Experience the vibrant summer weather of Shizuoka, Japan, in August, where temperatures can soar to a maximum of 34°C (93°F) and hover around an average of 27°C (80°F), with nights cooling to a comfortable 20°C (69°F). This month boasts a significant precipitation total of 260 mm (10.2 in), often falling over 18 days, contributing to the lush landscapes characteristic of the region. With humidity levels reaching an impressive 90%, prepare for a warm and occasionally rainy adventure that highlights the natural beauty and rich culture of Shizuoka during its summer peak.
In August, Shizuoka, Japan experiences a warm and vibrant climate, perfect for summer activities. With minimum temperatures of around 20°C (69°F) and average highs reaching 34°C (93°F), the month signifies peak summer warmth, inviting locals and tourists alike to enjoy the outdoors. The average temperature hovers around 27°C (80°F), a notable rise from the cooler months earlier in the year, highlighting a trend of escalating warmth leading into the summer. As Shizuoka basks in these tropical conditions, the city's lush landscapes and coastal beauty truly come alive, making it an ideal destination for sun-soaked adventures.
In August, Shizuoka experiences a noticeable decline in precipitation compared to the torrential rains of July, with 260 mm (10.2 in) falling over 18 days. This month marks a shift toward slightly calmer weather, though the rainfall is still significant, reflecting the persistent humidity typical of late summer. Interestingly, the number of rainy days continues to be high, suggesting that while each day may bring less intense downpours, showers are still frequent. This pattern of high moisture persists into September, which sees an almost identical precipitation amount of 262 mm (10.3 in), highlighting the region's steady climate as it transitions into the fall season. Overall, August serves as a bridge between July's peak rainfall and the slightly drier, yet still substantial, months ahead.
In August, Shizuoka experiences a humid embrace with a humidity level of 90%, marking a peak that follows the sweltering heat of July when levels reached an impressive 93%. This trend highlights the city's significant summer humidity, surging notably from 74% in February to a peak, almost completing a six-month climb that begins in May. As the summer wanes, humidity gradually decreases, bringing some relief in September at 86% and continuing its decline into the cooler months. The rhythm of Shizuoka's humidity underscores the region's tropical influences, as it navigates through a year marked by high humidity that leaves a lasting impression throughout the summer.
In August, Shizuoka experiences a notably high ultraviolet (UV) index, registering at 11, which falls under the extreme exposure category. This means that residents and visitors should exercise caution, with a burn time of just 10 minutes before risking skin damage. Following a peak in July with a UV index of 12, August continues to demand attention to sun safety, as UV levels remain critically high—underscoring a trend that sees the late summer months marked by elevated UV exposure. As we transition into September, the UV index is expected to decrease slightly to 10, yet it remains in the very high category, indicating that sun protection should still be a priority. For a detailed look at UV conditions throughout the year, visit Shizuoka UV Index.
UV Risk Categories
August in Shizuoka, Japan, shines brightly with an impressive 297 hours of sunshine, making it the sunniest month of the year. This peak follows a steady ascent from January’s 193 hours, showcasing the warm embrace of summer as days lengthen and skies clear. Notably, May and April also enjoy generous sunlight, with 293 and 275 hours respectively, hinting at the gradual build-up leading into the summer. However, as the year progresses into September, the sunny hours experience a dip to 244, marking the end of the summer glow, while the decrease continues into the cooler months of October and November. Overall, the trend illustrates a vibrant summer overflowing with sunshine, offering a perfect backdrop for outdoor adventures and scenic exploration.
August in Shizuoka, Japan, offers a modest chance of sunny weather, with only 33% likelihood of clear skies. This marks a slight uptick from the previous months, such as July (31%) and June (24%), though it remains on the lower end of the spectrum compared to earlier winter months like December (73%) and November (63%). As summer approaches its final chapter, the trend suggests that while sunshine may not dominate in August, it's still a welcome companion amid the warmth. The consistency of overcast skies seen in late spring and early summer transitions gradually, providing a glimmer of optimism for sun-seekers as they look to enjoy the tail end of summer.
In Shizuoka, Japan, August marks a transition in daylight hours as the long summer days begin to wane. With 13 hours of daylight, it mirrors the sunlit stretches of April and May, providing ample time for outdoor activities and exploration. This month continues the summer trend witnessed in June and July, which basked in 14 hours of sunlight, but it also hints at the approaching autumn as daylight gradually shortens. Following August, the days taper to 12 hours in September, signaling a shift towards the cooler months ahead. This gradual decline reflects the natural rhythm of the seasons, offering residents and visitors a chance to savor the last golden days of summer.
In August, Shizuoka, Japan experiences a gentle breeze with an average wind speed of 2.9 m/s (6 mph), marking a slight increase from the calmer days of June and July. While the wind speeds typically rise during the cooler months with November reaching 3.3 m/s (7 mph) and December peaking at 3.7 m/s (8 mph), the summer months maintain a more tranquil atmosphere. Interestingly, the wind speeds during late summer mirror those of September and October, suggesting a consistent ease as the seasons transition. Overall, the August winds offer a pleasant backdrop to Shizuoka's vibrant summer life, embodying a sense of relaxation before the seasonal shift takes hold.
Weather in Shizuoka varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Shizuoka, focusing on differences in temperature, rainfall, humidity, and UV levels.
In August, the weather is notably warmer and more humid, with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 34°C (93°F) and an average of 27°C (80°F). This month also experiences significant rainfall, with a total precipitation of 260 mm (10.2 in) spread over 18 days, resulting in a rainy atmosphere and high humidity levels at 90%.
In contrast, January brings much cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 17°C (63°F), averaging around 7°C (45°F). Precipitation during this month is also lower, totaling 71 mm (2.8 in) over just 6 days, accompanied by relatively lower humidity at 76%. For a detailed look at January weather in Shizuoka, visit Shizuoka weather in January. Overall, August and January present a stark contrast in climate, from the sweltering heat and moisture of summer to the crisp chill of winter.
August and February present starkly contrasting weather conditions. In August, temperatures soar with a minimum of 20°C (69°F) and an average high of 34°C (93°F), accompanied by high humidity levels reaching 90%. Precipitation is significant, with 260 mm (10.2 in) falling over 18 days, making it a rather wet month. In contrast, February is characterized by much cooler temperatures, with a minimum of 0°C (32°F) and an average of 8°C (46°F), peaking at 18°C (66°F). This month experiences limited rainfall, totaling 98 mm (3.9 in) over only 8 days, and the humidity is notably lower at 74%. For more detailed information, you can check Shizuoka weather in February.
In comparing the weather between August and March, August presents a significantly warmer climate, with average temperatures reaching around 27°C (80°F) and maximums soaring to 34°C (93°F). The month is characterized by high humidity levels at 90%, along with substantial rainfall totaling 260 mm (10.2 in) over 18 days. In contrast, March is much cooler, featuring average temperatures of 11°C (52°F) and maximums up to 21°C (71°F). While it still experiences precipitation, with 227 mm (8.9 in) over 13 days, the humidity is notably lower at 70%. You can explore more about the weather specifics in March by visiting Shizuoka weather in March.
In comparing the weather between August and April, we see a stark contrast in temperatures and humidity levels. August boasts a warm average temperature of 27°C (80°F), with highs reaching up to 34°C (93°F), while April is significantly cooler, with an average of 14°C (57°F) and maximum temperatures only reaching 24°C (76°F). Additionally, August experiences much higher humidity at 90%, compared to April's 74%. While both months see substantial rainfall, August has more rainfall days—18 days resulting in 260 mm (10.2 in) of precipitation, whereas April has just 13 rainy days with 244 mm (9.6 in) of precipitation. For more details, you can check the link: Shizuoka weather in April.
In comparing the weather of August and May, it is evident that August is significantly warmer with average temperatures ranging from a minimum of 20°C (69°F) to a maximum of 34°C (93°F), compared to May's cooler range of 10°C (50°F) to 25°C (78°F). Additionally, August experiences higher humidity at 90%, while May's humidity is more moderate at 81%. Precipitation levels are also notable, with August receiving 260 mm (10.2 in) over 18 days, which is slightly higher than May's 240 mm (9.5 in) over 12 days. For more detailed information about May weather, you can visit Shizuoka weather in May.
When comparing the weather in August and June, August typically presents warmer temperatures with a minimum of 20°C (69°F), an average of 27°C (80°F), and a maximum of 34°C (93°F). In contrast, June features cooler temperatures, with a minimum of 15°C (59°F), an average of 21°C (70°F), and a maximum of 28°C (83°F). While both months experience significant rainfall, June sees slightly higher precipitation at 288 mm (11.4 in) over 17 days, compared to August's 260 mm (10.2 in) over 18 days. Humidity levels are also high in both months, with August at 90% and June at 88%. For more details on June weather, visit Shizuoka weather in June.
In comparing the weather between July and August, we see a slight increase in average temperatures as August experiences a minimum of 20°C (69°F) and an average of 27°C (80°F), compared to July's minimum of 19°C (67°F) and average of 25°C (77°F). However, the maximum temperatures in August reach 34°C (93°F) while July peaks at 31°C (88°F). August also has noticeably less precipitation, with 260 mm (10.2 in) over 18 days, compared to July's 471 mm (18.6 in) over 23 days. Humidity remains high in both months, with August at 90% and July slightly higher at 93%. For more specific details about the July climate in this region, you can refer to Shizuoka weather in July.
August typically brings warmer weather compared to September, with average temperatures reaching up to 27°C (80°F) and maximums peaking at 34°C (93°F). In contrast, September sees a slight drop in average temperatures to 24°C (75°F), with maximums around 31°C (89°F). Both months experience considerable rainfall, with August recording 260 mm (10.2 in) over 18 days and September seeing similar precipitation levels at 262 mm (10.3 in) over 19 days. Humidity levels are also high in August at 90%, but slightly decrease to 86% in September. For more detailed information, check out Shizuoka weather in September.
In August, the weather is characterized by warm temperatures, with a minimum of 20°C (69°F), an average of 27°C (80°F), and a maximum reaching 34°C (93°F). This month also sees significant rainfall, with 260 mm (10.2 in) over 18 days and high humidity levels at 90%. In contrast, October presents a cooler climate, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 28°C (83°F) and an average of 19°C (67°F). Although it remains relatively rainy, October experiences slightly higher precipitation at 305 mm (12.0 in) over 17 days, with humidity decreasing to 83%. For more detailed information, you can visit Shizuoka weather in October.
August and November present quite contrasting weather conditions. In August, temperatures are much warmer, with a minimum of 20°C (69°F) and an average of 27°C (80°F), peaking at a scorching 34°C (93°F). This month also sees a high level of precipitation, totaling 260 mm (10.2 in) over 18 days, coupled with humidity levels reaching 90%. In contrast, November experiences a significant drop in temperature, with a minimum of 6°C (43°F) and an average of 15°C (59°F), and a maximum of just 23°C (73°F). The precipitation is considerably lower at 101 mm (4.0 in) across 11 days, along with a slight decrease in humidity to 80%. For more details, you can check out the Shizuoka weather in November.
August and December present starkly contrasting weather patterns. In August, temperatures soar with minimums around 20°C (69°F) and average highs reaching up to 34°C (93°F), accompanied by high humidity levels of 90%. The month is characterized by heavy rainfall, with approximately 260 mm (10.2 in) of precipitation spread over 18 days. In contrast, December experiences much cooler conditions, with temperatures ranging from a minimum of 1°C (33°F) to a maximum of 20°C (68°F) and an average of 10°C (50°F). Rainfall is significantly reduced in December, totaling 82 mm (3.2 in) over just 8 days, and the humidity drops to 78%. For more detailed insights, you can visit Shizuoka weather in December.
In August, Shizuoka experiences a striking blend of hot and humid weather, setting it apart from the cooler months. With average temperatures hovering around 27°C, the heat can peak at 34°C, making it the warmest time of the year. Coupled with high humidity levels approaching 90%, this month feels noticeably muggy. Rain is also a frequent visitor, with 18 days of precipitation totaling about 260 mm, contributing to the lush landscapes the region is known for. If you're eager to explore the unique August climate of Shizuoka, learn more about its year-round weather patterns at Shizuoka Climate.