Last updated: August 21, 2025
In September, Ishinomaki, Japan, experiences a vibrant transition as temperatures range from a maximum of 31°C (88°F) to a refreshing minimum of 12°C (54°F), with an average temperature of 22°C (71°F). Humidity levels soar to 86%, creating a lush atmosphere, while the region sees approximately 123 mm (4.9 in) of precipitation over about 13 days, making it a month marked by both warmth and occasional rain. This blend of weather conditions fosters the unique beauty of Ishinomaki, inviting exploration amidst its temperate charm.
In September, Ishinomaki, Japan, showcases a delightful transition into autumn, with temperatures reflecting the seasonal shift. The month begins with pleasant minimums of 12°C (54°F) and climbs to an average of 22°C (71°F), peaking at a warm 31°C (88°F). This marks a notable decrease from the sweltering highs of summer, while still offering ample warmth for outdoor activities. As summer recedes, September's mild and invigorating climate creates an inviting atmosphere for locals and visitors alike, making it an ideal time to explore the coastal beauty and cultural richness of this charming city.
In Ishinomaki, Japan, September marks a notable transition in precipitation patterns, with a total of 123 mm (4.9 in) of rainfall spread over 13 days. This increase follows the summer months, where July and August recorded the year's highest rainfall, at 177 mm (7.0 in) and 168 mm (6.6 in) respectively. As temperatures begin to cool, September's precipitation not only sustains the lush landscape but also hints at the approaching autumn. This month serves as a pivotal point, bridging the heavy rains of summer with the varying conditions of fall, while still maintaining a significant level of moisture that supports the region's ecology.
As summer fades and the fall season begins, September in Ishinomaki, Japan, presents a notable shift in humidity, measuring 86%. This marks a decline from the peak humidity seen in the summer months of July and August, both at 92%. The transition into autumn is evident as the humidity gradually decreases towards the milder levels of October at 82%. Interestingly, September's humidity remains elevated compared to the earlier months of the year, where levels hovered around 75-80%, suggesting that while the oppressive heat of summer subsides, a lingering moisture still hangs in the coastal air. This seasonal ebb and flow of humidity captures the unique climate character of Ishinomaki, blending the warmth of lingering summer with the crispness of impending fall.
As September rolls into Ishinomaki, Japan, residents and visitors experience a UV Index of 9, placing it in the very high exposure category with a burn time of just 15 minutes. This continues the trend from the summer months, where the UV Index peaked at 11 in July and 10 in August. While September provides a slight reprieve compared to the extreme levels of July, it still demands caution and protective measures against harmful UV radiation. As the seasons transition into fall, the UV Index will gradually decrease, but for now, sun safety remains a priority. For more details on UV exposure in Ishinomaki, check the full report here: Ishinomaki UV Index.
UV Risk Categories
September in Ishinomaki, Japan, brings a delightful blend of warmth and sunshine, accumulating 239 hours of glorious daylight. This month follows an upward trend from the summer, which peaked in May with 287 hours of sunshine, and retains a healthy amount of sun as the seasons shift. While the hours decrease slightly from August’s 254 hours, September still offers a vibrant tapestry of light, preparing the city for the cooler autumn months ahead. Compared to the start of the year, when January basked in only 173 hours, it’s a welcomed transition that nurtures the spirit of the region. As daylight begins to wane in October with 209 hours, residents and visitors alike relish the lingering warmth of September’s sun, celebrating the last golden days of the summer season.
As September rolls in, Ishinomaki experiences a modest 35% chance of sunny weather, marking a slight improvement from the preceding summer months, where the likelihood dips to around 27% in July and 29% in August. This uptick hints at a transition toward more favorable conditions, as the city begins to prepare for the autumn months. Notably, this chance of sunshine is less than the promising 44% seen in October, suggesting that while September may still hold some warmth and brightness, it often gives way to a more overcast atmosphere as autumn deepens. Thus, visitors can anticipate a blend of lingering summer vibes and the encroaching coolness of fall, making September a unique and variable month for weather enthusiasts in Ishinomaki.
As September arrives in Ishinomaki, Japan, the city experiences a gentle transition in daylight, with approximately 12 hours of sunlight each day. This marks a slight decrease from the summer months, where residents enjoyed 14 hours of daylight in June, July, and August. The gradual shift underscores the seasonal ebb and flow, as days shorten towards autumn. Following September, daylight will continue to dwindle, dropping to 11 hours in October and further to 10 hours in November, reminding us of the rhythmic cycle of nature that governs our experience of time and light throughout the year.
As September unfolds in Ishinomaki, Japan, the winds take on a gentle presence, averaging 3.7 m/s (8 mph), a slight dip from the summer's breezy warmth. Following a gradual decline since the spring, September’s winds continue to moderate, reflecting the transition into autumn. While this month boasts more tranquil gusts compared to its predecessors, it comfortably hovers within a consistent range that characterizes the early fall. The overall trend shows that as the year progresses, average wind speeds tend to fluctuate with the changing seasons, with winter heralding a brisk return to stronger breezes. This rhythm of wind envelops Ishinomaki, adding a serene quality to the landscape, inviting locals and visitors alike to experience the beauty of a coastal autumn.
Weather in Ishinomaki varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ishinomaki, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, Ishinomaki experiences warm temperatures, with an average of 22°C (71°F) and highs reaching up to 31°C (88°F), making it a pleasant month for outdoor activities. However, this warm weather comes with considerable humidity at 86% and significant rainfall, averaging 123 mm (4.9 in) over 13 days. In contrast, January brings a stark change, with much cooler temperatures ranging from a minimum of -5°C (22°F) to a maximum of 12°C (54°F) and an average of just 3°C (37°F). January also sees less precipitation, totaling 46 mm (1.8 in) over 8 days and a slightly lower humidity of 80%. For a more detailed look into January's climate, check Ishinomaki weather in January.
September and February showcase a stark contrast in weather. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 31°C (88°F), making it a warm month with an average of 22°C (71°F). The humidity is notably high at 86%, accompanied by significant rainfall of 123 mm (4.9 in) over 13 days. Conversely, February experiences much colder temperatures, with a minimum of -5°C (24°F) and a maximum of 14°C (57°F), resulting in an average of just 3°C (38°F). Precipitation in this month is lower, with only 41 mm (1.6 in) spread over 8 days, and humidity at 79%. For more details on February’s weather, you can visit Ishinomaki weather in February.
September and March present contrasting weather patterns, with September enjoying milder and warmer temperatures. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 31°C (88°F), accompanied by high humidity at 86%. The month sees an average of 123 mm (4.9 in) of precipitation over 13 days. In contrast, March experiences cooler conditions, with temperatures ranging from -2°C (28°F) to 20°C (68°F) and an average of 104 mm (4.1 in) of precipitation over 10 days, coupled with a lower humidity of 77%. For more details on March weather, you can explore Ishinomaki weather in March.
In comparing the weather between September and April, notable differences emerge. September enjoys warmer temperatures, with an average of 22°C (71°F) and highs reaching up to 31°C (88°F), while April is much cooler, averaging 10°C (51°F) and peaking at 23°C (73°F). Additionally, September experiences higher humidity at 86%, compared to April's more comfortable level of 75%. Precipitation levels are somewhat similar, with September seeing 123 mm (4.9 in) over 13 days and April receiving 105 mm (4.1 in) over 11 days. For a closer look at April's weather specifics, you can visit Ishinomaki weather in April.
In September, the weather is noticeably warmer compared to May, with average temperatures peaking at 22°C (71°F) and reaching highs of 31°C (88°F). In contrast, May sees cooler temperatures, averaging only 16°C (60°F) with a maximum of 27°C (80°F). Additionally, September experiences more rainfall, receiving 123 mm (4.9 in) over 13 days, while May has less precipitation at 97 mm (3.8 in) over just 11 days. The humidity in September is also higher at 86%, compared to the 80% humidity in May, making September feel more muggy and warm. For more detailed information, you can refer to this link: Ishinomaki weather in May.
In comparing the weather between June and September, we observe distinct differences in temperature and precipitation. September tends to be warmer, with average highs reaching 31°C (88°F) compared to June's 27°C (81°F), while the average temperature in September is 22°C (71°F) versus June's 19°C (66°F). Both months experience similar minimum temperatures of 12°C (54°F), but September has higher humidity at 86% compared to June's 87%. Rainfall is more abundant in September, with 123 mm (4.9 in) over 13 days, in contrast to June's 90 mm (3.6 in) spread over 11 days. For more details on June weather, see Ishinomaki weather in June.
In comparing the weather of September and July, we can observe several notable differences. September exhibits a slightly cooler range, with minimum temperatures dropping to 12°C (54°F) and a maximum of 31°C (88°F), while July typically sees higher temperatures, with a minimum of 16°C (62°F) and a peak of 32°C (90°F). Precipitation is more frequent in July, accumulating 177 mm (7.0 in) over 16 days compared to September's 123 mm (4.9 in) across 13 days. Additionally, humidity levels are slightly higher in July at 92%, versus September's 86%. For more details on July weather specifically, you can refer to Ishinomaki weather in July.
In comparing the weather between August and September, it's evident that September experiences slightly cooler temperatures, with a minimum of 12°C and an average of 22°C, compared to August's minimum of 16°C and an average of 25°C. August also boasts warmer maximum temperatures, reaching up to 32°C, while September peaks at 31°C. Precipitation is more frequent in August, with 168 mm over 17 days, compared to September’s 123 mm over 13 days. Additionally, humidity levels remain high in both months, though August records a slightly higher average at 92%, compared to September's 86%. For a more in-depth look at August weather patterns, you can check out Ishinomaki weather in August.
In comparing the weather between September and October, we can see a notable shift in temperatures and precipitation patterns. September typically experiences warmer temperatures, with a minimum of 12°C (54°F), an average of 22°C (71°F), and a maximum of 31°C (88°F). In contrast, October brings cooler conditions, ranging from a minimum of 8°C (46°F) to a maximum of 26°C (79°F), with an average temperature of 17°C (62°F). Additionally, October sees an increase in precipitation, totaling 192 mm (7.6 in) over 11 days, compared to September's 123 mm (4.9 in) over 13 days. Despite the higher rainfall in October, the humidity slightly decreases from 86% in September to 82% in October. For a detailed look at what to expect weather-wise, you can check out Ishinomaki weather in October.
September and November present contrasting weather patterns. In September, temperatures range from a mild 12°C (54°F) at night to a warm average of 22°C (71°F) and peak at a sweltering 31°C (88°F) during the day. The month is also characterized by significant rainfall, with 123 mm (4.9 in) spread over 13 days and high humidity at 86%. In sharp contrast, November brings a much cooler climate, with temperatures dipping to a chilly minimum of -1°C (31°F) and averaging only 11°C (52°F), peaking at 19°C (67°F). Precipitation decreases dramatically to 37 mm (1.5 in) over just 7 days, and humidity also falls, settling at 79%. For a closer look at the specifics of November weather, you can check out Ishinomaki weather in November.
September and December present contrasting weather patterns. In September, temperatures range from a mild 12°C (54°F) at night to a warm 31°C (88°F) during the day, with an average of 22°C (71°F). The month is also characterized by high humidity at 86% and considerable rainfall, totaling 123 mm (4.9 in) over about 13 days. In contrast, December sees much chillier conditions, with temperatures dropping to a minimum of -3°C (28°F) and peaking at a maximum of 16°C (60°F), leading to an average of just 5°C (41°F). Precipitation is less frequent, totaling 57 mm (2.3 in) across 11 days, and the humidity is slightly lower at 80%. For more detailed information, you can refer to Ishinomaki weather in December.
As September arrives in Ishinomaki, the weather begins to transition from the warmth of summer to the cooler embrace of autumn. This month typically showcases a unique blend of temperatures; while the maximum daytime heat can reach an inviting 31°C (88°F), the nights offer a refreshing dip to around 12°C (54°F). With an average temperature of 22°C (71°F), it strikes a pleasant balance. However, the increased humidity levels at 86% and frequent rainfall, with about 13 days of precipitation accumulating to 123 mm (4.9 in), set September apart from the drier summer months. For those curious about how Ishinomaki’s climate evolves throughout the year, you can explore more at Ishinomaki Climate.