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September Weather in Port Hope, Canada

Last updated: June 18, 2025

In September, the average temperature in Port Hope, Canada is a pleasant 17°C (64°F), with minimums dipping to 4°C (40°F) and maximums soaring up to 30°C (87°F). Expect 74 mm (2.9 in) of precipitation spread over 9 days, contributing to an average humidity of 76%. Stay prepared for a mix of weather!

September Temperature in Port Hope

In September in Port Hope, the average temperature is 17°C (64°F). The maximum can reach 30°C (87°F), and the minimum can be as low as 4°C (40°F). Be prepared for a mix of warm days and cooler nights when traveling during this time.

September Weather in Port Hope: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Port Hope, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Hope, September typically has an average temperature of 17°C (64°F), with highs reaching up to 30°C (87°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec232431425465727063523830
Data source: Temperature data for Port Hope 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 Port Hope

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

September Precipitation Trends in Port Hope

The chart displays monthly precipitation patterns in Port Hope, 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 Port Hope, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec667161110938489102741018577
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Port Hope

In Port Hope in September, humidity is 76%. With an average temperature of 17°C (64°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel sluggish and draining, challenging travelers to stay hydrated and seek respite in shaded areas or air-conditioned spaces.

September Average Humidity in Port Hope

This chart illustrates the average monthly humidity levels in Port Hope, 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 Port Hope 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 Port Hope

In Port Hope 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 Port Hope.

Maximum UV Index Levels in Port Hope for September

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

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

This table compares monthly weather conditions in Port Hope, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)66 mm (2.6 inches)91%low
February Weather-4°C (25°F)70 mm (2.8 inches)91%moderate
March Weather0°C (32°F)61 mm (2.4 inches)88%moderate
April Weather6°C (42°F)110 mm (4.3 inches)88%very high
May Weather12°C (54°F)93 mm (3.7 inches)82%very high
June Weather18°C (65°F)84 mm (3.3 inches)79%very high
July Weather22°C (72°F)89 mm (3.5 inches)77%very high
August Weather21°C (71°F)102 mm (4.0 inches)72%very high
September Weather17°C (64°F)74 mm (2.9 inches)76%high
October Weather11°C (52°F)101 mm (4.0 inches)83%moderate
November Weather4°C (39°F)85 mm (3.3 inches)88%moderate
December Weather-1°C (30°F)77 mm (3.0 inches)87%low

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