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September Weather in Bath, Canada

Last updated: June 18, 2025

In Bath, Canada, the average temperature in September is a mild 17°C (63°F), with temperatures ranging from a cool 3°C (38°F) to a warm 30°C (87°F). Expect 74 mm (2.9 in) of precipitation spread over 9 days, contributing to an average humidity of 72%. Enjoy the diverse weather that this month brings!

September Temperature in Bath

In September in Bath, the average temperature is 17°C (63°F), with maximums reaching up to 30°C (87°F) and minimums dipping as low as 3°C (38°F). This mild climate makes Bath an ideal destination for travelers seeking comfortable weather and a range of outdoor activities.

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

The chart illustrates September temperature patterns in Bath, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bath, September typically has an average temperature of 17°C (63°F), with highs reaching up to 30°C (87°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec222432435665727163523828
Data source: Temperature data for Bath 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 Bath

In Bath in September, the precipitation amount is 74 mm (2.9 in), which occurs over a span of 9 days.

September Precipitation Trends in Bath

The chart displays monthly precipitation patterns in Bath, 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 Bath, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec7476741259891106907414510090
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bath

In Bath in September, humidity is 72%. With an average temperature of 17°C (63°F), this humidity feels like a muggy embrace, making outdoor activities a bit sticky and requiring plenty of hydration for a comfortable travel experience.

September Average Humidity in Bath

This chart illustrates the average monthly humidity levels in Bath, 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 Bath is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%93%86%82%75%68%69%67%72%83%88%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bath

In Bath 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 Bath.

Maximum UV Index Levels in Bath for September

The chart shows the monthly maximum UV Index (UVI) for Bath 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 Bath typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245899997532
Data source: Bath 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 Bath Compares to Other Months

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

This table compares monthly weather conditions in Bath, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (22°F)74 mm (2.9 inches)93%low
February Weather-4°C (24°F)76 mm (3.0 inches)93%moderate
March Weather0°C (32°F)74 mm (2.9 inches)86%moderate
April Weather6°C (43°F)125 mm (4.9 inches)82%very high
May Weather13°C (56°F)98 mm (3.8 inches)75%very high
June Weather19°C (66°F)91 mm (3.6 inches)68%very high
July Weather22°C (72°F)106 mm (4.2 inches)69%very high
August Weather21°C (71°F)90 mm (3.5 inches)67%very high
September Weather17°C (63°F)74 mm (2.9 inches)72%high
October Weather11°C (52°F)145 mm (5.7 inches)83%moderate
November Weather3°C (38°F)100 mm (3.9 inches)88%moderate
December Weather-2°C (29°F)90 mm (3.5 inches)89%low

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