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September Weather in Shinjo, Japan

Last updated: August 23, 2025

In Shinjo, Japan, the average temperature in September hovers around 20°C (68°F). You can expect a minimum temperature of 6°C (44°F), while the mercury can rise to a maximum of 33°C (92°F). With 125 mm (4.9 in) of precipitation spread over 15 days and an average humidity of 86%, be prepared for a mix of warm days and rainy spells.

September Temperature in Shinjo

In September in Shinjo, the average temperature is 20°C (68°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop as low as 6°C (44°F). Be prepared for a pleasant mix of warm days and cooler evenings, making it an ideal time for outdoor activities and exploration.

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

The chart illustrates September temperature patterns in Shinjo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shinjo, September typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (92°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec313239485966737668574635
Data source: Temperature data for Shinjo 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 Shinjo

In Shinjo in September, the precipitation amount is 125 mm (4.9 in) over a span of 15 days.

September Precipitation Trends in Shinjo

The chart displays monthly precipitation patterns in Shinjo, 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 Shinjo, September typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec139131132128111122228209125153112175
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Shinjo

In Shinjo in September, humidity is 86%. With an average temperature of 20°C (68°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities challenging and necessitating frequent breaks for hydration and shade while traveling.

September Average Humidity in Shinjo

This chart illustrates the average monthly humidity levels in Shinjo, 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 Shinjo is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%77%75%80%87%92%92%86%82%79%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Shinjo

In Shinjo in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Shinjo.

Maximum UV Index Levels in Shinjo for September

The chart shows the monthly maximum UV Index (UVI) for Shinjo 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 Shinjo typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec347991011119643
Data source: Shinjo 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 Shinjo Compares to Other Months

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

This table compares monthly weather conditions in Shinjo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)138 mm (5.5 inches)80%moderate
February Weather0°C (32°F)131 mm (5.1 inches)79%moderate
March Weather4°C (40°F)131 mm (5.2 inches)77%high
April Weather9°C (48°F)128 mm (5.1 inches)75%very high
May Weather15°C (60°F)111 mm (4.4 inches)80%very high
June Weather19°C (66°F)122 mm (4.8 inches)87%very high
July Weather23°C (74°F)228 mm (9.0 inches)92%extreme
August Weather24°C (76°F)208 mm (8.2 inches)92%extreme
September Weather20°C (68°F)125 mm (4.9 inches)86%very high
October Weather14°C (57°F)153 mm (6.0 inches)82%high
November Weather8°C (47°F)112 mm (4.4 inches)79%moderate
December Weather2°C (35°F)175 mm (6.9 inches)80%moderate

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