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September Weather in Nagiso, Japan

Last updated: August 23, 2025

In September, the average temperature in Nagiso, Japan hovers around 21°C (70°F). Expect a minimum of 8°C (47°F) and a maximum reaching 32°C (90°F). Be prepared for ample rain, as 260 mm (10.2 in) of precipitation is likely over 18 days. With an average humidity of 87%, the air will feel quite tropical.

September Temperature in Nagiso

In September, in Nagiso, the average temperature is 21°C (70°F), with maximums reaching up to 32°C (90°F) and minimums dropping as low as 8°C (47°F). Travelers should be prepared for warm days and cooler nights, making it an ideal time for outdoor activities and exploration.

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

The chart illustrates September temperature patterns in Nagiso, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nagiso, September typically has an average temperature of 21°C (70°F), with highs reaching up to 32°C (90°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec333543516066737669594838
Data source: Temperature data for Nagiso 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 Nagiso

In Nagiso in September, the precipitation amount is 260 mm (10.2 in) spread over 18 days, indicating a relatively wet period for the region.

September Precipitation Trends in Nagiso

The chart displays monthly precipitation patterns in Nagiso, 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 Nagiso, September typically receives around 260 mm (10.2 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec881061832192312415442902602448696
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Nagiso

In Nagiso in September humidity is 87%. With an average temperature of 21°C (70°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities quite exhausting and requiring frequent breaks to hydrate and cool off.

September Average Humidity in Nagiso

This chart illustrates the average monthly humidity levels in Nagiso, 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 Nagiso is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%74%76%83%87%93%91%87%85%83%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Nagiso

In Nagiso 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 Nagiso.

Maximum UV Index Levels in Nagiso for September

The chart shows the monthly maximum UV Index (UVI) for Nagiso 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 Nagiso typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469101111121210754
Data source: Nagiso 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 Nagiso Compares to Other Months

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

This table compares monthly weather conditions in Nagiso, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)88 mm (3.4 inches)82%moderate
February Weather2°C (35°F)106 mm (4.2 inches)79%high
March Weather6°C (44°F)183 mm (7.2 inches)74%very high
April Weather11°C (51°F)219 mm (8.6 inches)76%very high
May Weather16°C (61°F)231 mm (9.1 inches)83%extreme
June Weather19°C (67°F)241 mm (9.5 inches)87%extreme
July Weather23°C (74°F)544 mm (21.4 inches)93%extreme
August Weather25°C (77°F)290 mm (11.4 inches)91%extreme
September Weather21°C (70°F)260 mm (10.2 inches)87%very high
October Weather15°C (60°F)244 mm (9.6 inches)85%high
November Weather9°C (48°F)86 mm (3.4 inches)83%moderate
December Weather3°C (38°F)96 mm (3.8 inches)83%moderate

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