Last updated: August 21, 2025
September in Shimoda, Japan, showcases a mildly warm climate with maximum temperatures reaching 29°C (84°F) and an average of 24°C (76°F). The evenings provide a refreshing respite, with minimum temperatures dropping to 18°C (65°F). This month is characterized by high humidity levels, averaging around 86%, contributing to a thick atmosphere. Rainfall is prevalent, with 254 mm (10.0 in) recorded over 19 rainy days, making it essential for visitors to prepare for unpredictable weather while soaking in the lush beauty of the region.
September in Shimoda, Japan, marks a pleasant transition from the summer heat to the crispness of autumn. With minimum temperatures around 18°C (65°F) and maximums peaking at 29°C (84°F), the month offers a comfortable average of 24°C (76°F), making it ideal for outdoor activities and exploring the scenic beauty of the region. Unlike the preceding summer months, temperatures begin to cool slightly, hinting at the refreshing change that autumn brings. This gradual drop not only enhances the charm of Shimoda's coastal landscapes but also showcases the vibrant colors of early fall, ensuring that September is a spectacular time to visit this beautiful destination.
In September, Shimoda experiences a significant shift in its weather patterns, marked by a notable increase in precipitation. With 254 mm (10.0 in) of rain falling over an impressive 19 days, the month stands out as a transition into the wetter season. This uptick follows the relatively drier August, which recorded only 183 mm (7.2 in) across 15 days. The return of persistent rainfall signals the onset of autumn, contributing to an overall trend of escalating precipitation from June through October. As the landscapes around Shimoda embrace the lushness that accompanies this continuation of wet weather, residents and visitors alike can expect vibrant scenery but should also be prepared for frequent showers.
As summer fades, September in Shimoda, Japan, welcomes a slight dip in humidity, settling at a notable 86%. This marks a gentle transition from the peak moisture levels experienced during the sweltering months of July and August, where humidity soared to 93% and 90%, respectively. The humid atmosphere that blankets the region peaks in the heart of summer but begins to ease, fostering a refreshing environment as autumn approaches. While September still holds onto the lingering warmth of summer, its humidity remains significantly higher than the cooler months, indicating a gradual but clear shift towards drier conditions in the coming fall.
In September, Shimoda, Japan experiences a UV Index of 10, falling into the very high exposure category, with a notable burn time of just 15 minutes. This reflects a downward trend from the peak of 12 in July, yet still indicates a significant risk for sunburn. As summer transitions into fall, awareness of UV exposure remains crucial, especially considering that, as late summer months showed, the UV Index was consistently extreme, demanding heightened sun protection measures. For more details on protecting your skin, check out Shimoda UV Index.
UV Risk Categories
September in Shimoda, Japan, continues the trend of abundant sunshine, boasting an impressive 254 hours of sunlight. Following a radiant August, which recorded the highest sunshine hours of the year at 311 hours, September offers a graceful tapering of warm days as summer transitions into autumn. While sunlight hours lessen compared to August, they still surpass many earlier months, including June and July. This lovely drop suggests a gentle change in season, making September a perfect time to enjoy the lingering warmth before the cooler October days arrive. The soul of Shimoda thrives in these sunlit September moments, inviting both locals and visitors to bask in its charm.
As September rolls in, Shimoda, Japan experiences a notable dip in sunny weather, with a 34% chance of clear skies. This marks a continuation of the declining trend observed from the summer months, where July and August each offered a 37% likelihood of sunshine. The shift from a warm, sun-soaked summer to the more variable early autumn brings about a noticeable change in weather patterns. Looking ahead, October shows a hopeful increase, with a 48% chance of sunny days, hinting at brighter prospects as the month progresses.
In Shimoda, Japan, September marks a transitional phase in daylight duration, where the days begin to shorten after the vibrant summer months. With 12 hours of daylight, September experiences a slight decrease compared to the longer days of the summer, which offered up to 14 hours in June and July. This gradual decline continues as autumn approaches, following a peak in May and June. As the year progresses into October, daylight diminishes further to 11 hours, signaling the onset of shorter, cozy days ahead. The overall trend showcases a rhythmic ebb and flow of daylight, reflecting nature's seasonal shifts in this picturesque coastal city.
In Shimoda, Japan, the arrival of September brings a gentle increase in average wind speed, reaching 6.4 m/s (14 mph). This marks a slight uptick from the quieter summer months of July and August, which feature calmer breezes averaging around 4.4 m/s (10 mph) and 6.0 m/s (13 mph), respectively. As the region transitions into autumn, the winds begin to invigorate the shores and hills, hinting at the seasonal shift. Interestingly, September maintains a consistency in moderate gusts, paralleling the mild breezes of spring, while also paving the way for November’s higher averages of 6.9 m/s (15 mph). This creates a unique atmospheric dynamic, blending the lingering warmth of summer with the refreshing embrace of autumn, making September an enchanting time to experience the coastal beauty of Shimoda.
Weather in Shimoda varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Shimoda, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present strikingly contrasting weather patterns. In September, temperatures range from a mild 18°C (65°F) to a warm 29°C (84°F), with an average of 24°C (76°F), accompanied by high humidity levels of 86%. This month also receives significant rainfall, with 254 mm (10.0 in) over approximately 19 days, creating a lush and moist environment. In contrast, January brings much cooler temperatures, with a minimum of 1°C (34°F) and a maximum of 17°C (63°F), averaging just 9°C (48°F). The precipitation in January is markedly lower at 78 mm (3.1 in) over only 7 days, and the humidity drops to 76%. For more details, you can check Shimoda weather in January.
September and February present stark contrasts in weather patterns. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 29°C (84°F), with an average of 24°C (76°F). The month is characterized by high precipitation, totaling 254 mm (10.0 in) over 19 days, and a humidity level of 86%, creating a warm and damp atmosphere. In contrast, February experiences much cooler conditions, with temperatures peaking at 18°C (65°F) and dropping as low as 2°C (37°F), averaging only 9°C (48°F). Additionally, February sees significantly less precipitation, with 90 mm (3.5 in) spread over just 8 days and lower humidity at 74%. For a closer look at February weather in the area, check out Shimoda weather in February.
September and March present contrasting weather experiences. In September, temperatures are typically warmer, with minimums around 18°C (65°F) and maximums reaching up to 29°C (84°F). The month also sees considerable rainfall, averaging 254 mm (10.0 in) over 19 days, accompanied by high humidity levels of 86%. In contrast, March features cooler temperatures, with minimums dropping to around 5°C (41°F) and maximums only reaching 18°C (65°F). Rainfall in March is somewhat less, averaging 203 mm (8.0 in) over 14 days, and humidity is lower at 70%. For more details on weather specifics during this time, you can explore Shimoda weather in March.
In comparing September and April weather, September tends to be much warmer and more humid. With average temperatures soaring to 24°C (76°F) and maximums reaching up to 29°C (84°F), it offers a marked contrast to April's milder averages of 15°C (58°F) and maximums of 21°C (70°F). Additionally, September experiences significantly higher precipitation, totaling 254 mm (10.0 in) over 19 days, while April sees less rainfall at 175 mm (6.9 in) across just 10 days. The humidity in September is also noticeably higher at 86% compared to 74% in April. For a detailed look at April weather, you can visit Shimoda weather in April.
In comparing the weather of September and May, September tends to be warmer and more humid. With average temperatures ranging from a minimum of 18°C (65°F) to a maximum of 29°C (84°F), September offers a warm climate ideal for late summer activities. In contrast, May features cooler temperatures, peaking at 23°C (74°F) and with a minimum of 13°C (55°F), making it a more temperate month. Additionally, September experiences significantly more precipitation, with 254 mm (10.0 in) over 19 days, compared to May's 222 mm (8.7 in) over just 11 days. The humidity is slightly higher in September at 86%, while May maintains a comfortable 81%. For a closer look at weather specifics, you can check Shimoda weather in May.
In September, temperatures tend to be warmer than in June, with averages around 24°C (76°F) compared to June's 21°C (70°F). However, June experiences slightly more rainfall, with total precipitation reaching 300 mm (11.8 in) over 15 days, while September records 254 mm (10.0 in) spread across 19 days. Both months have high humidity levels, but September is marginally less humid at 86%, compared to June's 88%. For more detailed insights on June weather patterns, check out Shimoda weather in June.
When comparing the weather in September to that of July, we see some notable differences. September experiences slightly lower temperatures, with average lows of 18°C (65°F) and highs reaching up to 29°C (84°F), while July is a bit warmer, with temperatures ranging from a minimum of 20°C (68°F) to a maximum of 30°C (87°F). However, July sees more precipitation, with 360 mm (14.2 in) falling over 18 days, compared to September's 254 mm (10.0 in) over 19 days. The humidity levels also tend to be higher in July at 93%, compared to September's 86%. For more detailed insights, you can visit Shimoda weather in July.
In comparing the weather of September and August, September experiences slightly lower temperatures, with a minimum of 18°C (65°F) and an average of 24°C (76°F), compared to August's minimum of 22°C (71°F) and average of 26°C (80°F). While August peaks at 30°C (87°F), September's maximum is a bit cooler at 29°C (84°F). Interestingly, September sees a significant increase in precipitation, totaling 254 mm (10.0 in) over 19 days, in contrast to August's 183 mm (7.2 in) across 15 days. Humidity remains high in both months, with September at 86% and August slightly higher at 90%. For more detailed insights, you can check Shimoda weather in August.
September typically features warmer temperatures with a minimum of 18°C and an average high of 29°C, while October sees a slight drop, with minimums around 14°C and maximums peaking at 26°C. Both months experience significant rainfall, but October records a higher total precipitation at 305 mm over 16 days compared to September's 254 mm over 19 days. Humidity levels are relatively similar, with September at 86% and October slightly lower at 83%. For more detailed information, check out Shimoda weather in October.
In September, the weather is considerably warmer with average temperatures ranging from a minimum of 18°C (65°F) to a maximum of 29°C (84°F), and the month experiences high humidity at 86%. With significant rainfall of 254 mm (10.0 in) spread over 19 days, September often feels quite wet. In contrast, November brings a noticeable drop in temperatures, with averages between 7°C (45°F) and 22°C (72°F). The precipitation also decreases to 144 mm (5.7 in) over 12 days, and humidity levels drop slightly to 80%. This transition highlights the shift from the warm, rainy days of September to the cooler, drier conditions of November. For more details, you can check Shimoda weather in November.
September weather is characterized by warm temperatures, with minimums around 18°C (65°F) and maximums reaching up to 29°C (84°F), averaging 24°C (76°F) overall. This month also brings significant rainfall, with 254 mm (10.0 in) of precipitation over 19 days, contributing to a high humidity level of 86%. In contrast, December experiences much cooler temperatures, with a minimum of 3°C (38°F) and a maximum of 21°C (69°F), averaging just 11°C (53°F). Rainfall decreases significantly to 88 mm (3.5 in) over 10 days, and humidity also drops to 78%. For a closer look at December conditions in Shimoda, check out Shimoda weather in December.
As September unfolds in Shimoda, the transition between summer and autumn becomes beautifully apparent. Temperatures are moderate, providing a pleasant escape from the summer heat, with the warmth lingering just enough to enjoy outdoor activities. However, increased humidity and frequent rainfall introduce a unique character to the month, making it one of the wetter times of the year with nearly half of the days seeing precipitation. This blend of warmth and moisture not only refreshes the landscape but also enhances the region's lush greenery, setting the stage for the stunning fall views ahead. For a deeper understanding of what this month brings, explore more at Shimoda Climate.