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September Weather in Higashi-Matsuyama, Japan

Last updated: August 23, 2025

In September, the average temperature in Higashi-Matsuyama, Japan is a pleasant 24°C (75°F). Expect a range of temperatures, with minimums dipping to 13°C (55°F) and maximums soaring up to 36°C (97°F). Be prepared for some rain, as 185 mm (7.3 in) of precipitation is likely over about 18 days. The air tends to be quite humid, with an average humidity level of 86%, creating a warm and tropical atmosphere.

September Temperature in Higashi-Matsuyama

In September in Higashi-Matsuyama, the average temperature is 24°C (75°F). Maximums can reach 36°C (97°F), while minimums can dip as low as 13°C (55°F). This makes it a perfect time for travelers to enjoy a comfortable climate with warm days and cooler evenings.

September Weather in Higashi-Matsuyama: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Higashi-Matsuyama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Higashi-Matsuyama, September typically has an average temperature of 24°C (75°F), with highs reaching up to 36°C (97°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec404350586773798375655545
Data source: Temperature data for Higashi-Matsuyama 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 Higashi-Matsuyama

In Higashi-Matsuyama in September, the total precipitation amount is 185 mm (7.3 in) spread over 18 days.

September Precipitation Trends in Higashi-Matsuyama

The chart displays monthly precipitation patterns in Higashi-Matsuyama, 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 Higashi-Matsuyama, September typically receives around 185 mm (7.3 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec41401201101101492401191852585442
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Higashi-Matsuyama

In Higashi-Matsuyama in September, humidity is 86%. With an average temperature of 24°C (75°F), this humidity feels like a warm, sticky embrace, making outdoor activities somewhat uncomfortable and requiring travelers to stay hydrated and take breaks in the shade.

September Average Humidity in Higashi-Matsuyama

This chart illustrates the average monthly humidity levels in Higashi-Matsuyama, 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 Higashi-Matsuyama 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 Higashi-Matsuyama

In Higashi-Matsuyama 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 Higashi-Matsuyama.

Maximum UV Index Levels in Higashi-Matsuyama for September

The chart shows the monthly maximum UV Index (UVI) for Higashi-Matsuyama 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 Higashi-Matsuyama typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101011109753
Data source: Higashi-Matsuyama 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 Higashi-Matsuyama Compares to Other Months

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

This table compares monthly weather conditions in Higashi-Matsuyama, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)41 mm (1.6 inches)76%moderate
February Weather6°C (43°F)40 mm (1.6 inches)74%moderate
March Weather10°C (50°F)120 mm (4.7 inches)70%very high
April Weather14°C (58°F)110 mm (4.3 inches)74%very high
May Weather20°C (68°F)110 mm (4.3 inches)81%very high
June Weather23°C (73°F)149 mm (5.9 inches)88%very high
July Weather26°C (80°F)240 mm (9.5 inches)93%extreme
August Weather28°C (83°F)119 mm (4.7 inches)90%very high
September Weather24°C (75°F)185 mm (7.3 inches)86%very high
October Weather18°C (65°F)258 mm (10.2 inches)83%high
November Weather13°C (55°F)54 mm (2.1 inches)80%moderate
December Weather7°C (45°F)42 mm (1.6 inches)78%moderate

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