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November Weather in Sarnia, Canada

Last updated: June 18, 2025

In November, the average temperature in Sarnia, Canada hovers around 4°C (40°F), with a minimum drop to -10°C (14°F) and a potential maximum rise to 21°C (71°F). Expect a total precipitation of 72 mm (2.8 in) over approximately 10 days, paired with a high average humidity of 89%.

November Temperature in Sarnia

In November in Sarnia, the average temperature is 4°C (40°F), with maximums reaching 21°C (71°F) and minimums dipping as low as -10°C (14°F). This diverse range of temperatures makes it essential for travelers to pack layers to stay comfortable throughout the day.

November Weather in Sarnia: Daily Temperature Highs, Lows, and Averages

The chart illustrates November temperature patterns in Sarnia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sarnia, November typically has an average temperature of 4°C (40°F), with highs reaching up to 21°C (71°F) and lows dropping to around -10°C (14°F).
JanFebMarAprMayJunJulAugSepOctNovDec262735445668737265544032
Data source: Temperature data for Sarnia 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.

November Precipitation in Sarnia

In Sarnia in November, the total precipitation amount is 72 mm (2.8 in) spread over a duration of 10 days.

November Precipitation Trends in Sarnia

The chart displays monthly precipitation patterns in Sarnia, with values for each month alongside November’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how November’s conditions compare to those of other months. In Sarnia, November typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec6166639597867379731067255
Data source: Precipitation data for November generated using information from the Copernicus Climate Change Service.
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November Humidity in Sarnia

In Sarnia in November humidity is 89%. With an average temperature of 4°C (40°F), this humidity feels like a chilling blanket enveloping you, making travel uncomfortable and damp, as the cold penetrates through your clothes and the air feels heavy and clinging.

November Average Humidity in Sarnia

This chart illustrates the average monthly humidity levels in Sarnia, with November’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In November, average humidity in Sarnia is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for November generated using information from the Copernicus Climate Change Service.

November UV Index in Sarnia

In Sarnia in November, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Sarnia, you can check the information here.

Maximum UV Index Levels in Sarnia for November

The chart shows the monthly maximum UV Index (UVI) for Sarnia in November, 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 November, the maximum UV index in Sarnia typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Sarnia November 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 November Weather in Sarnia Compares to Other Months

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

This table compares monthly weather conditions in Sarnia, showing how November’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)60 mm (2.4 inches)88%low
February Weather-3°C (28°F)66 mm (2.6 inches)87%moderate
March Weather1°C (35°F)63 mm (2.5 inches)85%moderate
April Weather7°C (45°F)95 mm (3.7 inches)86%very high
May Weather13°C (57°F)97 mm (3.8 inches)80%very high
June Weather20°C (68°F)86 mm (3.4 inches)80%very high
July Weather23°C (73°F)73 mm (2.9 inches)80%very high
August Weather22°C (72°F)79 mm (3.1 inches)80%very high
September Weather18°C (65°F)73 mm (2.9 inches)80%high
October Weather12°C (54°F)106 mm (4.2 inches)84%moderate
November Weather4°C (40°F)72 mm (2.8 inches)89%moderate
December Weather0°C (33°F)55 mm (2.2 inches)86%low

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