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September Weather in Manchester, United States

Last updated: June 24, 2025

In September, the average temperature in Manchester, United States hovers around 20°C (67°F). You can expect a minimum chill of 4°C (40°F) and a warm peak of 33°C (92°F). With precipitation averaging 101 mm (4.0 in) over 10 days and an average humidity of 77%, it's a month to embrace both sunshine and the occasional shower!

September Temperature in Manchester

In September in Manchester, the average temperature is 20°C (67°F). The maximum can reach 33°C (92°F), and the minimum can be as low as 4°C (40°F). It's an ideal time for travelers to enjoy mild weather and explore both outdoor activities and cultural sites.

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

The chart illustrates September temperature patterns in Manchester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Manchester, September typically has an average temperature of 20°C (67°F), with highs reaching up to 33°C (92°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec293240506270747267564135
Data source: Temperature data for Manchester 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 Manchester

In Manchester in September, the precipitation amount is 101 mm (4.0 in) spread over the course of 10 days.

September Precipitation Trends in Manchester

The chart displays monthly precipitation patterns in Manchester, 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 Manchester, September typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec8498102133122131119931011069391
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Manchester

In Manchester in September, humidity is 77%. With an average temperature of 20°C (67°F), this humidity feels like a thick, warm blanket wrapping around you, making travel uncomfortable and sticky, and often leading to a quick need for shade or refreshing drinks.

September Average Humidity in Manchester

This chart illustrates the average monthly humidity levels in Manchester, 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 Manchester is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Manchester

In Manchester in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Manchester.

Maximum UV Index Levels in Manchester for September

The chart shows the monthly maximum UV Index (UVI) for Manchester 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 Manchester typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Manchester 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 Manchester Compares to Other Months

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

This table compares monthly weather conditions in Manchester, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)84 mm (3.3 inches)88%moderate
February Weather0°C (33°F)98 mm (3.8 inches)88%moderate
March Weather4°C (40°F)102 mm (4.0 inches)87%high
April Weather10°C (50°F)133 mm (5.2 inches)87%very high
May Weather16°C (62°F)121 mm (4.8 inches)81%very high
June Weather21°C (70°F)131 mm (5.1 inches)83%very high
July Weather24°C (75°F)119 mm (4.7 inches)82%very high
August Weather22°C (72°F)93 mm (3.7 inches)76%very high
September Weather20°C (67°F)101 mm (4.0 inches)77%very high
October Weather14°C (57°F)106 mm (4.2 inches)82%high
November Weather5°C (41°F)93 mm (3.7 inches)89%moderate
December Weather2°C (35°F)91 mm (3.6 inches)86%low

Compare Manchester's Climate with Cities Worldwide