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September Weather in Nagahama, Japan

Last updated: August 23, 2025

In September, the average temperature in Nagahama, Japan is a pleasant 22°C (73°F). Expect a range that dips to a minimum of 14°C (57°F) and soars up to 33°C (91°F). Be prepared for some rain, as 230 mm (9.1 in) of precipitation is expected over 16 days. With an average humidity of 87%, it’s a good idea to stay hydrated and enjoy the lush surroundings!

September Temperature in Nagahama

In September in Nagahama, the average temperature is 22°C (73°F). The maximum can reach 33°C (91°F) and the minimum can be as low as 14°C (57°F). This pleasant climate makes Nagahama an ideal destination for outdoor activities and exploration during this time of year.

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

The chart illustrates September temperature patterns in Nagahama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nagahama, September typically has an average temperature of 22°C (73°F), with highs reaching up to 33°C (91°F) and lows dropping to around 14°C (57°F).
JanFebMarAprMayJunJulAugSepOctNovDec373846536369778072635242
Data source: Temperature data for Nagahama 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 Nagahama

In Nagahama in September, the precipitation amount is 230 mm (9.1 in) over the course of 16 days.

September Precipitation Trends in Nagahama

The chart displays monthly precipitation patterns in Nagahama, 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 Nagahama, September typically receives around 230 mm (9.1 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec9810015217618621339324423023678128
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Nagahama

In Nagahama in September humidity is 87%. With an average temperature of 22°C (73°F), this humidity feels like a thick, warm blanket enveloping you as you travel, making the air feel heavy and the exploration slightly more challenging but also wonderfully immersive in the local atmosphere.

September Average Humidity in Nagahama

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

In Nagahama 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 Nagahama.

Maximum UV Index Levels in Nagahama for September

The chart shows the monthly maximum UV Index (UVI) for Nagahama 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 Nagahama typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110753
Data source: Nagahama 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 Nagahama Compares to Other Months

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

This table compares monthly weather conditions in Nagahama, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)98 mm (3.9 inches)82%moderate
February Weather3°C (38°F)100 mm (3.9 inches)79%high
March Weather8°C (46°F)152 mm (6.0 inches)74%very high
April Weather12°C (54°F)176 mm (6.9 inches)76%very high
May Weather17°C (63°F)186 mm (7.3 inches)83%extreme
June Weather21°C (69°F)213 mm (8.4 inches)87%extreme
July Weather25°C (77°F)393 mm (15.5 inches)93%extreme
August Weather27°C (80°F)244 mm (9.6 inches)91%extreme
September Weather22°C (73°F)230 mm (9.1 inches)87%very high
October Weather17°C (63°F)236 mm (9.3 inches)85%high
November Weather11°C (52°F)78 mm (3.1 inches)83%moderate
December Weather6°C (42°F)128 mm (5.0 inches)83%moderate

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