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September Weather in Kasama, Japan

Last updated: August 23, 2025

In September, the average temperature in Kasama, Japan is a pleasant 23°C (73°F). Expect minimums as low as 12°C (54°F) and maximums soaring up to 34°C (94°F). With an average humidity of 84% and 169 mm (6.7 in) of precipitation spread over 18 days, be prepared for a typical yet vibrant climate that adds charm to your visit.

September Temperature in Kasama

In September in Kasama, the average temperature is 23°C (73°F). Maximum temperatures can reach up to 34°C (94°F), while minimums can drop to as low as 12°C (54°F). This pleasant climate makes it an ideal time for traveling, offering comfortable weather for exploring and outdoor activities.

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

The chart illustrates September temperature patterns in Kasama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kasama, September typically has an average temperature of 23°C (73°F), with highs reaching up to 34°C (94°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec394148556570778073635343
Data source: Temperature data for Kasama 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 Kasama

In Kasama in September, the precipitation amount is 169 mm (6.7 in) spread over 18 days.

September Precipitation Trends in Kasama

The chart displays monthly precipitation patterns in Kasama, 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 Kasama, September typically receives around 169 mm (6.7 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec41401371221321412261401692256956
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kasama

In Kasama in September, humidity is 84%. With an average temperature of 23°C (73°F), this humidity feels like a warm, thick blanket wrapping around you, making travel slightly exhausting but also uniquely invigorating as you navigate through the vibrant atmosphere.

September Average Humidity in Kasama

This chart illustrates the average monthly humidity levels in Kasama, 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 Kasama 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 Kasama

In Kasama 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 Kasama.

Maximum UV Index Levels in Kasama for September

The chart shows the monthly maximum UV Index (UVI) for Kasama 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 Kasama typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109653
Data source: Kasama 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 Kasama Compares to Other Months

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

This table compares monthly weather conditions in Kasama, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)41 mm (1.6 inches)76%moderate
February Weather5°C (41°F)40 mm (1.6 inches)75%moderate
March Weather9°C (48°F)137 mm (5.4 inches)72%high
April Weather13°C (56°F)122 mm (4.8 inches)73%very high
May Weather18°C (65°F)132 mm (5.2 inches)80%very high
June Weather21°C (70°F)141 mm (5.5 inches)87%extreme
July Weather25°C (77°F)226 mm (8.9 inches)92%extreme
August Weather27°C (81°F)140 mm (5.5 inches)90%very high
September Weather23°C (73°F)169 mm (6.7 inches)84%very high
October Weather17°C (63°F)225 mm (8.9 inches)80%high
November Weather12°C (54°F)69 mm (2.7 inches)77%moderate
December Weather6°C (43°F)56 mm (2.2 inches)77%moderate

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