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September Weather in Cobourg, Canada

Last updated: June 18, 2025

In Cobourg, Canada, the average temperature in September hovers around 18°C (64°F). Expect minimums of 5°C (42°F) and maximums reaching 29°C (85°F). The month brings about 74 mm (2.9 in) of precipitation spread over approximately 8 days, while the average humidity sits at a comfortable 76%. Prepare for varying weather conditions, making it a delightful time to explore!

September Temperature in Cobourg

In September in Cobourg, the average temperature is 18°C (64°F). Maximums can reach 29°C (85°F), while minimums can dip as low as 5°C (42°F). This makes it an ideal time for travelers looking to enjoy a mild climate.

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

The chart illustrates September temperature patterns in Cobourg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cobourg, September typically has an average temperature of 18°C (64°F), with highs reaching up to 29°C (85°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec242531415364727164533931
Data source: Temperature data for Cobourg 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 Cobourg

In Cobourg in September, the precipitation amount is 74 mm (2.9 in) over a period of 8 days.

September Precipitation Trends in Cobourg

The chart displays monthly precipitation patterns in Cobourg, 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 Cobourg, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec67716010989778594741058779
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cobourg

In Cobourg in September, humidity is 76%. With an average temperature of 18°C (64°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities feel steamy and invigorating—perfect for exploring charming streets, though you might want to take breaks in the shade.

September Average Humidity in Cobourg

This chart illustrates the average monthly humidity levels in Cobourg, 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 Cobourg is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%88%88%82%80%77%72%76%83%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cobourg

In Cobourg 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 Cobourg.

Maximum UV Index Levels in Cobourg for September

The chart shows the monthly maximum UV Index (UVI) for Cobourg 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 Cobourg typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Cobourg 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 Cobourg Compares to Other Months

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

This table compares monthly weather conditions in Cobourg, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)67 mm (2.6 inches)91%low
February Weather-4°C (25°F)71 mm (2.8 inches)91%moderate
March Weather-1°C (31°F)60 mm (2.4 inches)88%moderate
April Weather5°C (42°F)109 mm (4.3 inches)88%very high
May Weather12°C (53°F)89 mm (3.5 inches)82%very high
June Weather18°C (64°F)77 mm (3.0 inches)79%very high
July Weather22°C (72°F)85 mm (3.3 inches)77%very high
August Weather22°C (71°F)94 mm (3.7 inches)72%very high
September Weather18°C (64°F)74 mm (2.9 inches)76%high
October Weather11°C (53°F)105 mm (4.1 inches)83%moderate
November Weather4°C (40°F)87 mm (3.4 inches)88%moderate
December Weather-1°C (31°F)79 mm (3.1 inches)87%low

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