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September Weather in Kimitsu, Japan

Last updated: August 23, 2025

In Kimitsu, Japan, the average temperature in September hovers around 24°C (76°F). Expect a comfortable range, with minimums dipping to 18°C (65°F) and maximums climbing to 30°C (85°F). However, be prepared for some rain, as 189 mm (7.4 in) of precipitation can fall over 15 days. With an average humidity of 86%, the air can feel quite moist, adding to the region's unique climate experience.

September Temperature in Kimitsu

In September in Kimitsu, the average temperature is 24°C (76°F). Maximums can reach 30°C (85°F), and minimums can be as low as 18°C (65°F). This pleasant climate makes Kimitsu an ideal destination for travelers seeking comfortable weather and outdoor activities.

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

The chart illustrates September temperature patterns in Kimitsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kimitsu, September typically has an average temperature of 24°C (76°F), with highs reaching up to 30°C (85°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec464753586671778075686051
Data source: Temperature data for Kimitsu 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 Kimitsu

In Kimitsu in September, the precipitation amount is 189 mm (7.4 in) spread over 15 days.

September Precipitation Trends in Kimitsu

The chart displays monthly precipitation patterns in Kimitsu, 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 Kimitsu, September typically receives around 189 mm (7.4 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec615215512313617521111718927110972
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kimitsu

In Kimitsu in September, humidity is 86%. With an average temperature of 24°C (76°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities both challenging and exhilarating for travelers.

September Average Humidity in Kimitsu

This chart illustrates the average monthly humidity levels in Kimitsu, 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 Kimitsu is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%74%70%74%82%88%93%90%86%83%80%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kimitsu

In Kimitsu in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Kimitsu.

Maximum UV Index Levels in Kimitsu for September

The chart shows the monthly maximum UV Index (UVI) for Kimitsu 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 Kimitsu typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458101111111110754
Data source: Kimitsu 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 Kimitsu Compares to Other Months

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

This table compares monthly weather conditions in Kimitsu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)61 mm (2.4 inches)76%moderate
February Weather8°C (48°F)52 mm (2.0 inches)74%moderate
March Weather11°C (53°F)155 mm (6.1 inches)70%very high
April Weather14°C (58°F)123 mm (4.8 inches)74%very high
May Weather19°C (66°F)136 mm (5.3 inches)81%extreme
June Weather22°C (71°F)175 mm (6.9 inches)88%extreme
July Weather25°C (77°F)211 mm (8.3 inches)93%extreme
August Weather27°C (80°F)117 mm (4.6 inches)90%extreme
September Weather24°C (76°F)189 mm (7.4 inches)86%very high
October Weather20°C (68°F)271 mm (10.7 inches)83%high
November Weather16°C (60°F)108 mm (4.3 inches)80%moderate
December Weather11°C (51°F)71 mm (2.8 inches)78%moderate

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