nomadseason

September Weather in Sumiton, United States

Last updated: June 24, 2025

In September, the average temperature in Sumiton, United States is a pleasant 25°C (77°F). Expect a minimum of 11°C (52°F) and a maximum of 37°C (99°F), offering a delightful range to enjoy the outdoors. However, be prepared for about 85 mm (3.4 in) of precipitation over 7 days, coupled with an average humidity of 73%. It's a month where the weather can surprise you, so pack accordingly!

September Temperature in Sumiton

In September in Sumiton, the average temperature is 25°C (77°F). Maximums can reach 37°C (99°F), and minimums can be as low as 11°C (52°F). This weather makes Sumiton an ideal destination for travelers seeking warm and pleasant conditions.

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

The chart illustrates September temperature patterns in Sumiton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumiton, September typically has an average temperature of 25°C (77°F), with highs reaching up to 37°C (99°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec465258637278818077675349
Data source: Temperature data for Sumiton generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Sumiton

In Sumiton in September, the precipitation amount is 85 mm (3.4 in) over the course of 7 days.

September Precipitation Trends in Sumiton

The chart displays monthly precipitation patterns in Sumiton, 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 Sumiton, September typically receives around 85 mm (3.4 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec11417916515797136961148512678146
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Sumiton

In Sumiton in September humidity is 73%. With an average temperature of 25°C (77°F), this humidity feels like a warm blanket wrapping around you, making travel a bit sticky but also vibrant and lively, as the air carries the rich scents of the surrounding environment.

September Average Humidity in Sumiton

This chart illustrates the average monthly humidity levels in Sumiton, 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 Sumiton is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%81%77%77%72%73%73%85%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sumiton

In Sumiton 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 Sumiton.

Maximum UV Index Levels in Sumiton for September

The chart shows the monthly maximum UV Index (UVI) for Sumiton 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 Sumiton typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111119764
Data source: Sumiton 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 Sumiton Compares to Other Months

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

This table compares monthly weather conditions in Sumiton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)113 mm (4.5 inches)85%moderate
February Weather11°C (52°F)179 mm (7.0 inches)84%high
March Weather14°C (58°F)165 mm (6.5 inches)82%very high
April Weather17°C (63°F)157 mm (6.2 inches)82%very high
May Weather22°C (72°F)97 mm (3.8 inches)81%extreme
June Weather25°C (78°F)136 mm (5.4 inches)77%extreme
July Weather27°C (81°F)96 mm (3.8 inches)77%extreme
August Weather27°C (81°F)114 mm (4.5 inches)72%extreme
September Weather25°C (77°F)85 mm (3.4 inches)73%very high
October Weather19°C (67°F)126 mm (5.0 inches)73%high
November Weather11°C (53°F)78 mm (3.1 inches)85%high
December Weather10°C (49°F)146 mm (5.8 inches)88%moderate

Compare Sumiton's Climate with Cities Worldwide