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September Weather in Mount Pearl, Canada

Last updated: June 18, 2025

In September, the average temperature in Mount Pearl, Canada hovers around 13°C (56°F). Expect some variability, with minimums dipping to 4°C (39°F) and maximums reaching up to 24°C (75°F). Be prepared for 107 mm (4.2 in) of precipitation spread across 11 days, and note that the average humidity is a notable 90%.

September Temperature in Mount Pearl

In September in Mount Pearl, the average temperature is 13°C (56°F), with maximums reaching 24°C (75°F) and minimums dipping as low as 4°C (39°F). This mild climate makes it an ideal time for travelers to explore outdoor attractions while enjoying comfortable weather.

September Weather in Mount Pearl: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Mount Pearl, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mount Pearl, September typically has an average temperature of 13°C (56°F), with highs reaching up to 24°C (75°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec282629364150586256474033
Data source: Temperature data for Mount Pearl 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 Mount Pearl

In Mount Pearl in September, the precipitation amount is 107 mm (4.2 in) spread over a period of 11 days.

September Precipitation Trends in Mount Pearl

The chart displays monthly precipitation patterns in Mount Pearl, 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 Mount Pearl, September typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec11310210010380861006910797108134
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mount Pearl

In Mount Pearl in September, humidity is 90%. With an average temperature of 13°C (56°F), this humidity feels like a moist blanket enveloping you, making every step sticky and muggy, and forcing you to take frequent breaks in the shade as you explore the scenery.

September Average Humidity in Mount Pearl

This chart illustrates the average monthly humidity levels in Mount Pearl, 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 Mount Pearl is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%84%85%88%91%91%94%93%90%87%84%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mount Pearl

In Mount Pearl 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 Mount Pearl.

Maximum UV Index Levels in Mount Pearl for September

The chart shows the monthly maximum UV Index (UVI) for Mount Pearl 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 Mount Pearl typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2357810987421
Data source: Mount Pearl 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 Mount Pearl Compares to Other Months

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

This table compares monthly weather conditions in Mount Pearl, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)113 mm (4.5 inches)83%low
February Weather-3°C (26°F)102 mm (4.0 inches)84%moderate
March Weather-2°C (29°F)100 mm (3.9 inches)85%moderate
April Weather2°C (36°F)103 mm (4.0 inches)88%high
May Weather5°C (41°F)80 mm (3.1 inches)90%very high
June Weather10°C (51°F)86 mm (3.4 inches)91%very high
July Weather15°C (58°F)100 mm (3.9 inches)94%very high
August Weather17°C (62°F)69 mm (2.7 inches)93%very high
September Weather13°C (56°F)107 mm (4.2 inches)90%high
October Weather8°C (48°F)97 mm (3.8 inches)87%moderate
November Weather4°C (40°F)108 mm (4.3 inches)84%low
December Weather0°C (33°F)133 mm (5.3 inches)83%low

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