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September Weather in Mombetsu, Japan

Last updated: August 23, 2025

In Mombetsu, Japan, the average temperature in September hovers around 16°C (62°F). Temperature fluctuations can be notable, with a minimum of 5°C (40°F) and a maximum reaching up to 30°C (86°F). Expect 81 mm (3.2 in) of precipitation spread over 12 days, contributing to a high average humidity of 88%.

September Temperature in Mombetsu

In September in Mombetsu, the average temperature is 16°C (62°F). The maximum can reach 30°C (86°F), while the minimum can drop as low as 5°C (40°F). This moderate climate makes Mombetsu an ideal destination for travelers seeking both warm and cool weather experiences.

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

The chart illustrates September temperature patterns in Mombetsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mombetsu, September typically has an average temperature of 16°C (62°F), with highs reaching up to 30°C (86°F) and lows dropping to around 5°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec202130425358676762513926
Data source: Temperature data for Mombetsu 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 Mombetsu

In Mombetsu in September, the precipitation amount is 81 mm (3.2 in) over a span of 12 days.

September Precipitation Trends in Mombetsu

The chart displays monthly precipitation patterns in Mombetsu, 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 Mombetsu, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec576577609795105150811288355
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mombetsu

In Mombetsu in September humidity is 88%. With an average temperature of 16°C (62°F), this humidity feels like a heavy blanket enveloping you, making each step feel sluggish and draining, which can be quite challenging for travelers.

September Average Humidity in Mombetsu

This chart illustrates the average monthly humidity levels in Mombetsu, 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 Mombetsu is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%85%85%88%88%93%95%88%81%78%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mombetsu

In Mombetsu in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Mombetsu.

Maximum UV Index Levels in Mombetsu for September

The chart shows the monthly maximum UV Index (UVI) for Mombetsu 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 Mombetsu typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789997532
Data source: Mombetsu 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 Mombetsu Compares to Other Months

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

This table compares monthly weather conditions in Mombetsu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (20°F)57 mm (2.2 inches)87%low
February Weather-6°C (21°F)65 mm (2.5 inches)86%moderate
March Weather-1°C (31°F)77 mm (3.0 inches)85%moderate
April Weather5°C (42°F)60 mm (2.4 inches)85%high
May Weather12°C (53°F)97 mm (3.8 inches)88%very high
June Weather14°C (58°F)94 mm (3.7 inches)88%very high
July Weather19°C (67°F)105 mm (4.1 inches)93%very high
August Weather19°C (67°F)150 mm (5.9 inches)95%very high
September Weather16°C (62°F)81 mm (3.2 inches)88%high
October Weather10°C (51°F)128 mm (5.0 inches)80%moderate
November Weather4°C (39°F)83 mm (3.3 inches)78%moderate
December Weather-3°C (26°F)55 mm (2.2 inches)82%low

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