Last updated: August 21, 2025
In Urayasu, Japan, the weather in September is marked by warm temperatures and notable humidity. The maximum temperature can reach a sweltering 34°C (93°F), while the average sits comfortably at 24°C (75°F), providing a mix of warmth and mildness throughout the month. With minimum temperatures dipping to 14°C (57°F), evenings can be pleasantly cool. However, rainfall is a significant feature of September, with an average precipitation total of 192 mm (7.6 in), occurring over 16 days. The high humidity level of 86% adds to the overall tropical feel, making this month both vibrant and dynamic for residents and visitors alike.
In Urayasu, Japan, September marks a transitional phase as summer gracefully yields to autumn. The temperatures average a comfortable 24°C (75°F), with daily highs reaching up to 34°C (93°F), allowing for warm, enjoyable days. As the month progresses, nights cool down, dropping to a minimum of 14°C (57°F), providing a refreshing contrast to the daytime warmth. Compared to the intense heat of July and August, September's climate offers a delightful reprieve, characterized by a blend of lingering summer warmth and the early hints of fall. This shift not only enhances the landscape's beauty but also invites outdoor activities under the gradually fading summer sun.
In September, Urayasu experiences a notable uptick in precipitation, with 192 mm (7.6 in) falling over 16 days. This increase is part of a seasonal trend that sees the month marked by significant rainfall, following a relatively dry August. The amounts recorded are a precursor to the even higher totals often observed in October, when precipitation typically peaks at 261 mm (10.3 in). As summer transitions to autumn, the region's weather pattern becomes increasingly dynamic, underscoring September as a critical month for moisture accumulation in Urayasu. The consistent rainfall not only replenishes local waterways but also supports the lush vegetation that characterizes the region.
In Urayasu, Japan, September marks a slight decrease in humidity, averaging 86%, yet it remains among the higher levels of the year. This trend follows the peak humidity of 93% seen in July, reflecting a common pattern where summer months experience significant moisture. As the year transitions from August's humid 90% to September's 86%, residents and visitors alike may find the air beginning to cool slightly. However, the lingering warmth combined with elevated humidity levels still offers a characteristic, sultry edge to early autumn in this vibrant coastal city. With October bringing a drop to 83%, it's evident that while September humidity is high, the gradual reduction points to the inevitable shift towards drier, cooler fall months ahead.
As summer transitions into autumn, September in Urayasu, Japan presents a UV Index of 9, placing it in the very high exposure category. This signifies an awareness of sun safety is still essential as the burn time is approximately 15 minutes for unprotected skin. Following the peak summer months of June, July, and August, which all soared to an extreme UV Index of 11, September retains significant UV intensity, albeit slightly lower. This trend underscores a gradual decline in UV radiation as the year progresses, yet caution against overexposure remains crucial. For more detailed information on UV levels throughout the year, check out Urayasu UV Index.
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In Urayasu, Japan, the month of September offers a delightful blend of warmth and sunshine, with 234 hours of sunlight illuminating the skies. As summer transitions to autumn, this month marks a dip from the exuberant 288 hours enjoyed in August. However, September still boasts a substantial amount of sunshine, continuing the trend of increasing daylight that starts from the year's earliest months. With solar hours steadily rising from 189 hours in January to a peak in May, it’s evident that Urayasu bathes in abundant light during the warmer months. Though October brings a reduction to 201 hours, September stands out as a bridge between the seasonal vibrancy of summer and the quieter, cooler days of fall.
In Urayasu, Japan, September typically features a 27% chance of sunny weather, marking it as one of the more overcast months of the year. This trend is part of a broader pattern, where the likelihood of sunshine gradually decreases from the summer peak, reaching its lowest point in September before starting to recover in October. Comparatively, the sunniest months are January and February, boasting chances of 53% and 67% respectively, while the summer months, including July and August, also lag behind with percentages of 32% and 36%. As the transition into autumn occurs, Urayasu residents and visitors might want to prepare for a bit more cloud cover and occasional rain, making sunny days a delightful surprise in this transitional month.
As summer transitions into autumn, September in Urayasu, Japan, offers a gentle decline in daylight, averaging 12 hours per day. This month marks a slight decrease from the sun-soaked days of August, which enjoyed 13 hours of daylight. Following the vibrant spring and summer months, where daylight peaked at 14 hours from May to July, September begins to hint at the shorter days ahead, echoing the gradual shift towards October's 11 hours. This subtle change in daylight not only signifies the end of the summer warmth but also sets the stage for the cooler, crisper days of autumn, encouraging locals to savor the lingering sunshine before winter's approach.
As September arrives in Urayasu, Japan, the gentle whispers of the wind signal the transition from the summer heat to the crispness of autumn. With an average wind speed of 3.6 m/s (8 mph), September's breezy embrace is a delightful contrast to the sweltering July, which dipped to its calmest at 2.8 m/s (6 mph). This revival of wind speeds showcases a subtle increase as summer wanes, hinting at the impending dynamics of fall. Interestingly, September’s gusts are on par with those of other months in this transitional season, especially following August's similar pace of 4.1 m/s (9 mph). Together, these patterns reflect a rhythmic cycle, where the winds act as a herald of change, bridging the warmth of summer and the cool allure of autumn in Urayasu.
Weather in Urayasu varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Urayasu, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather. In September, temperatures typically range from a mild 14°C (57°F) at night to a sweltering 34°C (93°F) during the day, with an average of 24°C (75°F). The month sees substantial rainfall, accumulating 192 mm (7.6 in) over 16 days, accompanied by high humidity levels at 86%. In sharp contrast, January experiences a significant chill, with temperatures dropping to a minimum of -7°C (20°F) and reaching a maximum of 17°C (63°F), averaging just 5°C (41°F). This winter month is much drier, with only 49 mm (1.9 in) of precipitation across 5 days and lower humidity at 76%. For more insights into the weather during this time, you can refer to Urayasu weather in January.
September weather is characterized by warm temperatures, with average highs reaching 34°C (93°F) and a relatively high humidity level of 86%. The month experiences considerable rainfall, accumulating around 192 mm (7.6 in) over approximately 16 days. In stark contrast, February is much cooler, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 19°C (66°F), and an average temperature of 6°C (44°F). The precipitation in February is significantly lower, totaling 43 mm (1.7 in) over just 7 days and accompanied by a lower humidity of 74%. For more detailed insights into February's weather in Japan, you can visit Urayasu weather in February.
In September, the weather is typically warm with average temperatures ranging from a low of 14°C (57°F) to a high of 34°C (93°F), while humidity levels peak at 86%. The month sees significant rainfall, with 192 mm (7.6 in) of precipitation over 16 days. In contrast, March experiences much cooler temperatures, with averages between -2°C (29°F) and a mild 22°C (72°F). Precipitation is reduced to 134 mm (5.3 in) spread over 12 days, and humidity drops to a more comfortable 70%. For a detailed look at March temperatures, check Urayasu weather in March.
September and April exhibit stark contrasts in weather patterns. In September, temperatures range from a minimum of 14°C (57°F) to a sweltering maximum of 34°C (93°F), with an average temperature of 24°C (75°F). The month is characterized by high humidity levels at 86%, along with significant rainfall, amassing 192 mm (7.6 in) over 16 days. In contrast, April sees much cooler conditions, with temperatures shifting between a minimum of 2°C (37°F) and a maximum of 26°C (79°F), resulting in a more moderate average temperature of 14°C (58°F). This month experiences less precipitation, totaling 116 mm (4.6 in) over just 10 days, and a lower humidity level of 74%. For more detailed information, check out Urayasu weather in April.
When comparing the weather in September and May, significant differences in temperature and precipitation are evident. September experiences warmer temperatures, with an average high of 34°C (93°F) compared to May's max of 30°C (87°F). While September has a higher average temperature of 24°C (75°F) against May's 19°C (67°F), it also brings more humidity at 86% versus May's 81%. Additionally, September sees more rainfall, with 192 mm (7.6 in) spread over 16 days, compared to May's 125 mm (4.9 in) over 12 days. For more details on May weather patterns, you can check Urayasu weather in May.
When comparing the weather in September and June, both months exhibit relatively warm temperatures, but September tends to be hotter overall. In September, the minimum temperature is 14°C (57°F) and the average is notably higher at 24°C (75°F), reaching a maximum of 34°C (93°F). In contrast, June has slightly cooler temperatures, with a minimum of 15°C (59°F), an average of 22°C (72°F), and a maximum of 33°C (91°F). Precipitation levels are higher in September at 192 mm (7.6 in) over 16 days, compared to June's 160 mm (6.3 in) over 14 days. Both months experience high humidity, with September at 86% and June slightly higher at 88%. For further details, you can explore Urayasu weather in June.
In comparing the weather of September and July, September generally experiences milder temperatures, with a minimum of 14°C (57°F) and a maximum of 34°C (93°F), averaging around 24°C (75°F). The month sees significant rainfall, with 192 mm (7.6 in) distributed over 16 days and humidity levels at a comfortable 86%. In contrast, July showcases warmer conditions, recording a minimum of 18°C (65°F) and a peak of 37°C (99°F), with an average temperature of 26°C (79°F). July is also wetter, with 224 mm (8.8 in) of precipitation over 18 days and higher humidity at 93%. For more details on July weather, you can visit Urayasu weather in July.
In comparing the weather between August and September, September tends to be slightly cooler, with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 34°C (93°F), while August experiences warmer conditions, with an average range of 18°C (65°F) to 35°C (95°F). Although September is cooler, it sees more precipitation, with 192 mm (7.6 in) across 16 days compared to August's 105 mm (4.1 in) over 13 days. Humidity levels remain high in both months, with September at 86% and August slightly higher at 90%. For more details on the specifics of August weather, you can check Urayasu weather in August.
In September, the weather tends to be warmer with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 34°C (93°F) and an average temperature of 24°C (75°F). The month experiences significant rainfall, totaling 192 mm (7.6 in) over 16 days, coupled with high humidity at 86%. In contrast, October marks a noticeable drop in temperatures, with a minimum of 8°C (47°F), an average of 19°C (66°F), and a maximum of 30°C (87°F). Rainfall increases to 261 mm (10.3 in) over 15 days, but humidity slightly decreases to 83%. For more details on October conditions, you can visit Urayasu weather in October.
September typically showcases warmer weather with average temperatures reaching 24°C (75°F) and highs peaking at 34°C (93°F). The month experiences significant rainfall, with 192 mm (7.6 in) falling over 16 days, contributing to a high humidity level of 86%. In contrast, November brings a noticeable drop in temperatures, with averages around 13°C (56°F) and maximums of only 23°C (74°F). Precipitation decreases to 90 mm (3.5 in) over 10 days, and humidity levels slightly decline to 80%. For more details about November weather, you can visit Urayasu weather in November.
September and December present a striking contrast in weather conditions. In September, temperatures are warmer, with a minimum of 14°C (57°F) and an average high of 34°C (93°F), accompanied by significant humidity at 86%. This month also sees considerable rainfall, with 192 mm (7.6 in) across 16 days. In contrast, December brings much cooler temperatures, with minimums dropping to -2°C (28°F) and an average high of 21°C (70°F). Precipitation decreases significantly to 64 mm (2.5 in) over just 7 days, and humidity lowers to 78%. For more details on December weather, visit Urayasu weather in December.
In September, Urayasu transitions into a more moderate climate, marking a notable shift from the summer heat. While the month can still experience maximum temperatures soaring to 34°C, the average drops to a comfortable 24°C, providing a respite from the sweltering summer months. However, increased humidity at around 86% combined with nearly half the days seeing rain means that September often feels more tropical and wet than its predecessor. As the city prepares for the cooler autumn months, those visiting will notice that September offers a unique blend of warmth and moisture, making it distinct in Urayasu's annual weather cycle. For a detailed look at the climatic patterns throughout the year, visit Urayasu Climate.