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September Weather in Nagato, Japan

Last updated: August 23, 2025

In Nagato, Japan, the average temperature in September is a pleasant 24°C (76°F). However, you can experience a range, with a minimum of 17°C (62°F) and a maximum soaring to 35°C (95°F). Expect significant rainfall, totaling 233 mm (9.2 in) over approximately 13 days, contributing to an average humidity level of 84%. Stay prepared for warm yet humid days!

September Temperature in Nagato

In September, Nagato has an average temperature of 24°C (76°F). The maximum can reach up to 35°C (95°F), while the minimum can drop to as low as 17°C (62°F). This pleasant climate makes Nagato an ideal destination for travel during this time.

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

The chart illustrates September temperature patterns in Nagato, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nagato, September typically has an average temperature of 24°C (76°F), with highs reaching up to 35°C (95°F) and lows dropping to around 17°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec454552596773808376675748
Data source: Temperature data for Nagato 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 Nagato

In Nagato in September, the precipitation amount is 233 mm (9.2 in) over the course of 13 days.

September Precipitation Trends in Nagato

The chart displays monthly precipitation patterns in Nagato, 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 Nagato, September typically receives around 233 mm (9.2 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec64771391101111782982482331174574
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Nagato

In Nagato in September humidity is 84%. With an average temperature of 24°C (76°F), this humidity feels like a warm, damp embrace that can make outdoor activities feel sticky and uncomfortable, requiring frequent breaks in the shade and plenty of hydration for travelers.

September Average Humidity in Nagato

This chart illustrates the average monthly humidity levels in Nagato, 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 Nagato is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%72%69%75%84%88%95%93%84%79%76%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Nagato

In Nagato 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 Nagato.

Maximum UV Index Levels in Nagato for September

The chart shows the monthly maximum UV Index (UVI) for Nagato 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 Nagato typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458101111121210753
Data source: Nagato 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 Nagato Compares to Other Months

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

This table compares monthly weather conditions in Nagato, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)64 mm (2.5 inches)76%moderate
February Weather7°C (46°F)77 mm (3.0 inches)72%moderate
March Weather11°C (52°F)139 mm (5.5 inches)69%very high
April Weather15°C (59°F)109 mm (4.3 inches)75%very high
May Weather19°C (67°F)111 mm (4.4 inches)84%extreme
June Weather23°C (73°F)178 mm (7.0 inches)88%extreme
July Weather26°C (80°F)298 mm (11.7 inches)95%extreme
August Weather28°C (83°F)248 mm (9.8 inches)93%extreme
September Weather24°C (76°F)233 mm (9.2 inches)84%very high
October Weather19°C (67°F)117 mm (4.6 inches)79%high
November Weather14°C (58°F)45 mm (1.8 inches)76%moderate
December Weather9°C (48°F)74 mm (2.9 inches)75%moderate

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