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September Weather in Karasuyama, Japan

Last updated: August 23, 2025

In Karasuyama, Japan, the average temperature in September hovers around 22°C (71°F), with lows dipping to 11°C (52°F) and highs soaring to 34°C (93°F). Expect a moderate precipitation of 163 mm (6.4 in) spread over 17 days, accompanied by an average humidity level of 84%. Stay prepared for a warm and somewhat wet month!

September Temperature in Karasuyama

In September in Karasuyama, the average temperature is 22°C (71°F). Maximums can reach 34°C (93°F), while minimums can be as low as 11°C (52°F). This pleasant climate makes Karasuyama an ideal destination for travelers seeking mild weather and outdoor adventures.

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

The chart illustrates September temperature patterns in Karasuyama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Karasuyama, September typically has an average temperature of 22°C (71°F), with highs reaching up to 34°C (93°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec373946536369767971615140
Data source: Temperature data for Karasuyama 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 Karasuyama

In Karasuyama in September, the precipitation amount is 163 mm (6.4 in) over the course of 17 days.

September Precipitation Trends in Karasuyama

The chart displays monthly precipitation patterns in Karasuyama, 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 Karasuyama, September typically receives around 163 mm (6.4 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec38371361201331372261571632115450
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Karasuyama

In Karasuyama in September, humidity is 84%. With an average temperature of 22°C (71°F), this humidity feels like a warm, sticky blanket wrapping around you, making outdoor activities a bit challenging but also inviting you to seek out shaded spots and cool refreshments during your travels.

September Average Humidity in Karasuyama

This chart illustrates the average monthly humidity levels in Karasuyama, 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 Karasuyama is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%75%72%73%80%87%93%90%84%80%77%77%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Karasuyama

In Karasuyama 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 Karasuyama.

Maximum UV Index Levels in Karasuyama for September

The chart shows the monthly maximum UV Index (UVI) for Karasuyama 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 Karasuyama typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101011119653
Data source: Karasuyama 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 Karasuyama Compares to Other Months

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

This table compares monthly weather conditions in Karasuyama, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)38 mm (1.5 inches)76%moderate
February Weather4°C (39°F)37 mm (1.4 inches)75%moderate
March Weather8°C (46°F)136 mm (5.3 inches)72%high
April Weather12°C (54°F)120 mm (4.7 inches)73%very high
May Weather17°C (64°F)133 mm (5.2 inches)80%very high
June Weather21°C (69°F)137 mm (5.4 inches)87%very high
July Weather24°C (76°F)226 mm (8.9 inches)92%extreme
August Weather26°C (79°F)157 mm (6.2 inches)90%extreme
September Weather22°C (71°F)163 mm (6.4 inches)84%very high
October Weather16°C (61°F)210 mm (8.3 inches)80%high
November Weather10°C (51°F)54 mm (2.1 inches)77%moderate
December Weather5°C (41°F)50 mm (2.0 inches)77%moderate

Compare Karasuyama's Climate with Cities Worldwide