nomadseason

September Weather in Birmingham, United States

Last updated: June 24, 2025

The average temperature in Birmingham, United States during September is a pleasant 25°C (77°F). You can expect some variability, with minimums dipping to 10°C (51°F) and maximums peaking at 37°C (99°F). Keep your umbrella handy, as precipitation typically reaches 87 mm (3.4 in) over 8 days. Additionally, the average humidity hovers around a comfortable 73%, making for a balanced climate throughout the month.

September Temperature in Birmingham

In September in Birmingham, the average temperature is 25°C (77°F). Maximum temperatures can reach up to 37°C (99°F), while the minimum can drop as low as 10°C (51°F). Overall, it's a great time to visit Birmingham if you enjoy warm weather with a refreshing cooler breeze in the evenings.

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

The chart illustrates September temperature patterns in Birmingham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Birmingham, 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 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec465258637277808076675349
Data source: Temperature data for Birmingham 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 Birmingham

In Birmingham in September, the precipitation amount is 87 mm (3.4 in), which occurs over a span of 8 days.

September Precipitation Trends in Birmingham

The chart displays monthly precipitation patterns in Birmingham, 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 Birmingham, September typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec1171681491431061461141258713182146
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Birmingham

In Birmingham 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 Birmingham

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

In Birmingham 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 Birmingham.

Maximum UV Index Levels in Birmingham for September

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

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

This table compares monthly weather conditions in Birmingham, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)117 mm (4.6 inches)85%moderate
February Weather11°C (52°F)168 mm (6.6 inches)84%high
March Weather14°C (58°F)149 mm (5.9 inches)82%very high
April Weather17°C (63°F)143 mm (5.6 inches)82%very high
May Weather22°C (72°F)105 mm (4.2 inches)81%extreme
June Weather25°C (78°F)146 mm (5.7 inches)77%extreme
July Weather27°C (81°F)114 mm (4.5 inches)77%extreme
August Weather26°C (80°F)125 mm (4.9 inches)72%extreme
September Weather25°C (77°F)87 mm (3.4 inches)73%very high
October Weather19°C (67°F)131 mm (5.2 inches)73%high
November Weather11°C (53°F)82 mm (3.2 inches)85%high
December Weather10°C (49°F)146 mm (5.8 inches)88%moderate

Compare Birmingham's Climate with Cities Worldwide