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September Weather in Shinshimokawa, Japan

Last updated: August 23, 2025

In September, the average temperature in Shinshimokawa, Japan hovers around 15°C (60°F). Minimum temperatures can dip to 3°C (37°F) while maximums can soar up to 29°C (85°F). Expect about 80 mm (3.1 in) of precipitation over 13 days, with an average humidity level of a muggy 88%.

September Temperature in Shinshimokawa

In September in Shinshimokawa, the average temperature is 15°C (60°F). Maximums can reach 29°C (85°F) and minimums can be as low as 3°C (37°F). This climate offers a pleasant range for travelers, making it an ideal time to explore Shinshimokawa.

September Weather in Shinshimokawa: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Shinshimokawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shinshimokawa, September typically has an average temperature of 15°C (60°F), with highs reaching up to 29°C (85°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec171929405257676660483623
Data source: Temperature data for Shinshimokawa generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Shinshimokawa

In Shinshimokawa in September, the precipitation amount is 80 mm (3.1 in) spread over the course of 13 days.

September Precipitation Trends in Shinshimokawa

The chart displays monthly precipitation patterns in Shinshimokawa, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Shinshimokawa, September typically receives around 80 mm (3.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec6476846994971001588013812086
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Shinshimokawa

In Shinshimokawa in September humidity is 88%. With an average temperature of 15°C (60°F), this humidity feels like a damp embrace, making travel feel sluggish and heavy, as the air clings to your skin and every step requires more effort than usual.

September Average Humidity in Shinshimokawa

This chart illustrates the average monthly humidity levels in Shinshimokawa, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Shinshimokawa is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%85%85%88%88%93%95%88%81%78%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Shinshimokawa

In Shinshimokawa in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Shinshimokawa.

Maximum UV Index Levels in Shinshimokawa for September

The chart shows the monthly maximum UV Index (UVI) for Shinshimokawa in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Shinshimokawa typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec236789997532
Data source: Shinshimokawa September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Shinshimokawa Compares to Other Months

Weather in Shinshimokawa varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Shinshimokawa, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Shinshimokawa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (17°F)64 mm (2.5 inches)87%low
February Weather-7°C (19°F)76 mm (3.0 inches)86%moderate
March Weather-2°C (29°F)84 mm (3.3 inches)85%high
April Weather4°C (40°F)69 mm (2.7 inches)85%high
May Weather11°C (53°F)94 mm (3.7 inches)88%very high
June Weather14°C (58°F)97 mm (3.8 inches)88%very high
July Weather19°C (67°F)100 mm (3.9 inches)93%very high
August Weather19°C (66°F)158 mm (6.2 inches)95%very high
September Weather15°C (60°F)80 mm (3.1 inches)88%high
October Weather9°C (48°F)138 mm (5.4 inches)80%moderate
November Weather2°C (36°F)119 mm (4.7 inches)78%moderate
December Weather-5°C (23°F)86 mm (3.4 inches)82%low

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