Last updated: August 21, 2025
In September, Minamata, Japan, experiences a subtropical climate characterized by warm temperatures and significant rainfall. The maximum temperature can reach a sizzling 34°C (94°F), while the average hovers around a pleasant 25°C (77°F), dipping to a cool 14°C (57°F) at night. This month is marked by high humidity levels averaging 84%, contributing to the overall sultry atmosphere. With 228 mm (9.0 in) of precipitation spread over 16 days, residents can expect a mix of sunny intervals and frequent showers, making September a notably dynamic time in Minamata.
In September, Minamata experiences a delightful transition as summer begins to wane. With minimum temperatures rising to a comfortable 14°C (57°F) and average highs reaching 34°C (94°F), the month offers a perfect blend of warmth without the oppressive heat of the peak summer months. The average temperature rests at a pleasant 25°C (77°F), making it an ideal time for outdoor activities and enjoying the stunning natural surroundings. Notably, as the month progresses, temperatures start to cool gradually, indicating the shift towards autumn. This makes September a picturesque time in Minamata, where the lingering warmth invites visitors to savor the last days of summer while anticipating the crispness of fall.
In September, Minamata experiences a notable shift in its precipitation patterns, with 228 mm (9.0 in) of rainfall over 16 days. This is slightly less than the deluge of the summer months, yet still significant as it marks a transition from the peak rainfall of July and August. While July stands out with an impressive 465 mm (18.3 in) over 22 days, September's totals suggest a gradual tapering of heavy rain, setting the stage for the drier months that follow. This pattern reinforces the coastal city's identity as a place of marked seasonal variation, where the lush greenery nurtured by summer storms begins to yield to the calm of autumn.
In September, Minamata, Japan, experiences a notable humidity level of 84%, a slight decrease from the peak of 92% seen in July and 91% in August. This month marks the transition towards a more comfortable climate as the summer heat begins to wane. Throughout the year, humidity levels show a clear trend of increasing warmth peaking in the summer months, particularly from June to August. However, as autumn approaches, the humidity gently tapers off, reflecting a gradual shift towards drier conditions typically seen in the months ahead. Thus, September stands as a bridge between the sweltering summer and the milder autumn, offering a refreshing respite while still retaining a significant amount of moisture in the air.
In September, Minamata, Japan, experiences a notably high UV Index of 11, indicating an extreme exposure category that requires caution. As summer transitions into autumn, the UV levels remain elevated, although slightly lower than the peak observed in August, when the UV Index reached 13. With a burn time of just 10 minutes, it's crucial for residents and visitors alike to protect their skin during outdoor activities. The trend of consistently high UV levels during these months underscores the importance of UV safety, especially following the extreme measurements seen from April through August. For more detailed information, check out the Minamata UV Index.
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September shines brightly in Minamata, Japan, boasting 264 hours of sunshine that perfectly encapsulate the transition from summer into autumn. This month marks a slight dip from the sun-drenched days of August, which enjoyed an impressive 305 hours. However, September's abundant sunlight still contributes to a robust overall trend of increasing daylight hours during the warmer months, peaking in mid-summer. The weather is pleasantly mild, providing a wonderful backdrop for outdoor activities, while the gradual decrease in sunshine as the year progresses hints at the cooler seasons to come. Overall, September is a delightful bridge between the vibrancy of summer and the serene beauty of autumn in Minamata.
In Minamata, Japan, the likelihood of sunny weather in September stands at 33%, reflecting a slight uptick from the rainier months of summer, where chances plummet to as low as 18% in July. As the seasons shift toward autumn, September serves as a transitional period before the weather turns more favorable in October, which boasts a significant increase in sunlight at 62%. This trend indicates that while September may not be the sunniest month, it paves the way for brighter days ahead, signaling the gradual departure from the heavy summer rains.
In Minamata, Japan, the daylight duration undergoes a captivating shift throughout the year, reflecting the changing seasons. September witnesses a gentle decline in daylight, with 12 hours illuminating the days, a step down from the 14 hours enjoyed in the summer months of June and July. This gradual reduction is part of a broader trend, as the region transitions from the long, sun-filled days of late spring and summer to the shorter, cozier days of autumn and winter. With the duration of daylight starting to dwindle, the vibrant fall colors begin to emerge, inviting residents and visitors alike to embrace the beauty of this season of change.
As summer fades into autumn, September in Minamata, Japan brings a gentle breeze, with an average wind speed of just 2.0 m/s (4 mph). This marks a slight decline from the summer months, reflecting a seasonal transition where the winds begin to calm. The pattern throughout the year shows that wind speeds are often highest in the mid-winter months of January and December, both averaging around 2.7 m/s. Conversely, the months of June and September experience the lightest winds, suggesting a stillness that envelops the region as the heat of summer gives way to the cooler embrace of fall. This gradual shift highlights a unique climatic rhythm, where each season brings its own distinct atmosphere to Minamata.
Weather in Minamata varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Minamata, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather experiences. In September, temperatures are considerably warmer, ranging from a minimum of 14°C (57°F) to a maximum of 34°C (94°F), with an average of 25°C (77°F). This month is also characterized by high humidity at 84% and frequent rainfall, with precipitation occurring over 16 days and totaling 228 mm (9.0 in).
In stark contrast, January brings cooler temperatures, with a minimum of -4°C (25°F) and a maximum of 20°C (68°F), averaging just 7°C (44°F). Precipitation is much lighter during this month, totaling 61 mm (2.4 in) and spread over only 7 days. The humidity in January is slightly lower at 75%, making for a different overall climate experience.
For more detailed information about January weather, you can visit Minamata weather in January.
September and February present strikingly different weather characteristics. In September, temperatures soar from a minimum of 14°C (57°F) to a scorching maximum of 34°C (94°F), with an average of 25°C (77°F). This month is marked by high humidity at 84% and considerable rainfall, totaling 228 mm (9.0 in) over 16 days. In stark contrast, February experiences much cooler temperatures, ranging from a minimum of -3°C (27°F) to a maximum of 20°C (69°F), with an average of 8°C (46°F). Precipitation in February is lower at 105 mm (4.1 in) across just 10 days, and the humidity is also notably lower at 71%. For those interested in more details, you can see Minamata weather in February.
In September, the weather features a warm average temperature of 25°C (77°F), with maximum highs reaching up to 34°C (94°F), while nighttime lows remain comfortably at 14°C (57°F). However, this month also brings significant rainfall, averaging 228 mm (9.0 in) over 16 days, along with high humidity levels at 84%. In contrast, March experiences cooler temperatures, with an average of 12°C (54°F) and maximum highs of 26°C (78°F). The minimum temperatures can drop to around 1°C (34°F), making it much chillier than September. Additionally, March sees lower rainfall at 149 mm (5.9 in) over 14 days and less humidity at 71%. For more detailed information, you can check Minamata weather in March.
September and April present contrasting weather patterns. In September, temperatures range from a minimum of 14°C (57°F) to a maximum of 34°C (94°F), with an average of 25°C (77°F). The month is also characterized by significant precipitation, with 228 mm (9.0 in) falling over 16 days, accompanied by high humidity levels of 84%. In comparison, April experiences much cooler temperatures, with minimums of 4°C (39°F) and maximums reaching 27°C (82°F), averaging at 16°C (61°F). Precipitation is lower, at 143 mm (5.6 in) over 10 days, and humidity is slightly less at 78%. These differences illustrate the transition from the warmth and humidity of September to the cooler, more temperate conditions of April. For more detailed weather information, you can visit Minamata weather in April.
In comparing the weather between September and May, we see a distinct shift in temperatures and precipitation patterns. September tends to be significantly warmer, with average temperatures reaching 25°C (77°F) and highs up to 34°C (94°F), while May offers cooler conditions, averaging 20°C (68°F) with maximums around 30°C (87°F). Both months experience considerable rainfall, with September seeing 228 mm over 16 days and May slightly higher at 234 mm over just 12 days. Notably, the humidity remains consistent at 84% in both months, contributing to the sultry feel typical of these transitional seasons. For a closer look at May weather conditions, you can visit Minamata weather in May.
When comparing the weather in September and June, both months exhibit warm temperatures, with September averaging 25°C (77°F) compared to June's slightly lower average of 23°C (74°F). However, September tends to feature higher maximum temperatures, reaching up to 34°C (94°F), while June peaks at 31°C (89°F). Precipitation is notably higher in June, with 342 mm (13.5 in) over 18 days, compared to September's 228 mm (9.0 in) spread over 16 days. Humidity levels are also similar, with September at 84% and June at 86%, making both months feel quite humid. For more detailed insights, you can check Minamata weather in June.
When comparing the weather in September and July, several notable differences emerge. In September, temperatures range from a minimum of 14°C (57°F) to a maximum of 34°C (94°F), with an average of 25°C (77°F). The month experiences a significant amount of rainfall, totaling 228 mm (9.0 in) over 16 days, along with a humidity level of 84%. In contrast, July tends to be warmer, with minimum temperatures around 18°C (65°F) and maximums reaching 35°C (96°F), averaging at 27°C (80°F). Notably, July sees almost double the precipitation of September, with 465 mm (18.3 in) spread over 22 days and higher humidity at 92%. These variations highlight a shift towards cooler, slightly drier conditions in September compared to the hot and humid atmosphere of July. For more details, you can check Minamata weather in July.
In comparing the weather of September and August, September tends to be slightly cooler, with a minimum temperature of 14°C (57°F) and an average of 25°C (77°F), compared to August's minimum of 21°C (71°F) and average of 28°C (82°F). Both months experience considerable rainfall, but September sees slightly less precipitation at 228 mm (9.0 in) over 16 days, while August records 242 mm (9.5 in) over 17 days. Humidity levels are high in both months, with September at 84% and August slightly higher at 91%. For more detailed insights into weather conditions, you can visit Minamata weather in August.
September's weather is characterized by warmer temperatures, with average highs reaching 34°C (94°F) and consistent humidity at 84%. The month experiences significant precipitation, totaling 228 mm (9.0 in) over 16 days, leading to a humid and often wet atmosphere. In contrast, October brings a noticeable drop in temperature, with averages around 20°C (68°F) and maximum highs of 32°C (89°F). Precipitation also decreases to 131 mm (5.2 in) over 10 days, making the weather less oppressive and more comfortable, while humidity remains relatively stable at 83%. For more detailed weather information, check out Minamata weather in October.
September weather is significantly warmer, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 34°C (94°F) and an average of 25°C (77°F). In contrast, November sees much cooler temperatures, with a minimum of 1°C (34°F), an average of 14°C (57°F), and a maximum of 25°C (77°F). Additionally, September experiences heavier rainfall, with 228 mm (9.0 in) over 16 days, compared to November's 96 mm (3.8 in) across just 9 days. Humidity levels are also slightly higher in September at 84%, while November's humidity is around 81%. For more detailed weather insights, you can visit Minamata weather in November.
September brings warm temperatures with a minimum of 14°C (57°F) and an average high of 34°C (94°F), making it feel quite summer-like. However, it also sees significant rainfall with about 228 mm (9.0 in) over 16 days, contributing to a high humidity level of 84%. In contrast, December experiences much cooler weather, with temperatures ranging from a minimum of -1°C (30°F) to a milder average of 8°C (47°F). Precipitation drops significantly to 90 mm (3.5 in) over just 8 days, and humidity is slightly lower at 79%. For more detailed insights into December weather, you can refer to Minamata weather in December.
As September unfolds in Minamata, the weather presents a unique blend of warmth and moisture that sets it apart from the other months of the year. With temperatures fluctuating dramatically between warm days and cooler evenings, this transitional period sees an average temperature of 25°C, making it notably comfortable yet variable. Rainfall becomes more frequent, with significant precipitation across 16 days, contributing to a lush landscape and a humidity level that hovers around 84%. This combination creates a refreshing yet dynamic atmosphere, perfect for embracing the beauty of early autumn. For more detailed insights into the region's climate, explore Minamata Climate.