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September Weather in Sukagawa, Japan

Last updated: August 23, 2025

In September, the average temperature in Sukagawa, Japan hovers around a pleasant 20°C (68°F). However, be prepared for a range, as the temperatures can dip to a chilly 9°C (48°F) or soar up to a warm 32°C (90°F). Expect about 158 mm (6.2 in) of precipitation spread over approximately 16 days, contributing to an average humidity of 84%.

September Temperature in Sukagawa

In September in Sukagawa, the average temperature is 20°C (68°F). The maximum can reach 32°C (90°F), while the minimum can be as low as 9°C (48°F). This mild climate makes it an ideal time for exploring the outdoor attractions and activities in the area.

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

The chart illustrates September temperature patterns in Sukagawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sukagawa, September typically has an average temperature of 20°C (68°F), with highs reaching up to 32°C (90°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec333542506166747768584737
Data source: Temperature data for Sukagawa 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 Sukagawa

In Sukagawa in September, the total precipitation amount is 158 mm (6.2 in) that occurs over a span of 16 days.

September Precipitation Trends in Sukagawa

The chart displays monthly precipitation patterns in Sukagawa, 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 Sukagawa, September typically receives around 158 mm (6.2 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec49401201081281252521251582114755
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sukagawa

In Sukagawa in September humidity is 84%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket, making travel a challenge as the air clings to your skin, and every step feels heavier in the mugginess.

September Average Humidity in Sukagawa

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

In Sukagawa 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 Sukagawa.

Maximum UV Index Levels in Sukagawa for September

The chart shows the monthly maximum UV Index (UVI) for Sukagawa 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 Sukagawa typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111119753
Data source: Sukagawa 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 Sukagawa Compares to Other Months

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

This table compares monthly weather conditions in Sukagawa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)48 mm (1.9 inches)76%moderate
February Weather1°C (35°F)40 mm (1.6 inches)75%moderate
March Weather5°C (42°F)120 mm (4.7 inches)72%high
April Weather10°C (50°F)108 mm (4.2 inches)73%very high
May Weather16°C (61°F)128 mm (5.0 inches)80%very high
June Weather19°C (67°F)125 mm (4.9 inches)87%extreme
July Weather23°C (74°F)252 mm (9.9 inches)92%extreme
August Weather25°C (77°F)125 mm (4.9 inches)90%extreme
September Weather20°C (68°F)158 mm (6.2 inches)84%very high
October Weather14°C (58°F)211 mm (8.3 inches)80%high
November Weather8°C (47°F)47 mm (1.8 inches)77%moderate
December Weather3°C (37°F)55 mm (2.2 inches)77%moderate

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