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September Weather in Mandeville, Canada

Last updated: June 18, 2025

In September, the average temperature in Mandeville, Canada is a mild 15°C (59°F). However, temperatures can vary widely, with a minimum of -1°C (31°F) and a maximum reaching up to 31°C (89°F). Expect about 68 mm (2.7 in) of precipitation over 9 days, while the air remains humid with an average humidity of 78%.

September Temperature in Mandeville

In September in Mandeville, the average temperature is 15°C (59°F), with maximums reaching up to 31°C (89°F) and minimums dropping as low as -1°C (31°F). This wide range of temperatures makes it essential for travelers to pack accordingly for both warm days and chilly nights.

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

The chart illustrates September temperature patterns in Mandeville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mandeville, September typically has an average temperature of 15°C (59°F), with highs reaching up to 31°C (89°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec141726395564706759473119
Data source: Temperature data for Mandeville 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 Mandeville

In Mandeville in September, the precipitation amount is 68 mm (2.7 in) spread over 9 days.

September Precipitation Trends in Mandeville

The chart displays monthly precipitation patterns in Mandeville, 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 Mandeville, September typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec82848711892100941036812211295
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mandeville

In Mandeville in September, humidity is 78%. With an average temperature of 15°C (59°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities a bit more tiring and requiring frequent breaks for hydration as you explore the area.

September Average Humidity in Mandeville

This chart illustrates the average monthly humidity levels in Mandeville, 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 Mandeville is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%94%90%86%78%71%79%78%78%87%90%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mandeville

In Mandeville 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 Mandeville.

Maximum UV Index Levels in Mandeville for September

The chart shows the monthly maximum UV Index (UVI) for Mandeville 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 Mandeville typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235799887532
Data source: Mandeville 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 Mandeville Compares to Other Months

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

This table compares monthly weather conditions in Mandeville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (14°F)82 mm (3.2 inches)95%low
February Weather-9°C (17°F)84 mm (3.3 inches)94%moderate
March Weather-3°C (26°F)87 mm (3.4 inches)90%moderate
April Weather4°C (40°F)118 mm (4.6 inches)86%high
May Weather13°C (55°F)92 mm (3.6 inches)77%very high
June Weather18°C (65°F)100 mm (3.9 inches)71%very high
July Weather21°C (70°F)94 mm (3.7 inches)79%very high
August Weather20°C (68°F)103 mm (4.1 inches)78%very high
September Weather15°C (59°F)68 mm (2.7 inches)78%high
October Weather8°C (47°F)122 mm (4.8 inches)87%moderate
November Weather0°C (32°F)112 mm (4.4 inches)90%moderate
December Weather-7°C (19°F)95 mm (3.7 inches)93%low

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