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July Weather in Greater Sudbury, Canada

Last updated: June 18, 2025

In Greater Sudbury, Canada, the average temperature in July reaches a comfortable 20°C (68°F). However, you might experience a range from a cool 8°C (46°F) to a warm 34°C (94°F). Be prepared for occasional rain, as the area sees about 94 mm (3.7 in) of precipitation over 10 days and enjoys an average humidity level of 66%.

July Temperature in Greater Sudbury

In July in Greater Sudbury, the average temperature is 20°C (68°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 8°C (46°F). This range makes it an ideal time for travelers to enjoy a variety of outdoor activities while ensuring they are prepared for cooler evenings.

July Weather in Greater Sudbury: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Greater Sudbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greater Sudbury, July typically has an average temperature of 20°C (68°F), with highs reaching up to 34°C (94°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec121424375262686557452918
Data source: Temperature data for Greater Sudbury 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.

July Precipitation in Greater Sudbury

In Greater Sudbury in July, the precipitation amount is 94 mm (3.7 in) over a duration of 10 days.

July Precipitation Trends in Greater Sudbury

The chart displays monthly precipitation patterns in Greater Sudbury, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Greater Sudbury, July typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec4560518382969496911248165
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Greater Sudbury

In Greater Sudbury in July, humidity is 66%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making outdoor activities enjoyable but potentially a bit sticky, so travelers should stay hydrated and consider light, breathable clothing for comfort.

July Average Humidity in Greater Sudbury

This chart illustrates the average monthly humidity levels in Greater Sudbury, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Greater Sudbury is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%95%89%87%74%70%66%71%76%85%89%93%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Greater Sudbury

In Greater Sudbury in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Greater Sudbury.

Maximum UV Index Levels in Greater Sudbury for July

The chart shows the monthly maximum UV Index (UVI) for Greater Sudbury in July, 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 July, the maximum UV index in Greater Sudbury typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799987532
Data source: Greater Sudbury July 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 July Weather in Greater Sudbury Compares to Other Months

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

This table compares monthly weather conditions in Greater Sudbury, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-11°C (13°F)45 mm (1.8 inches)96%low
February Weather-10°C (14°F)60 mm (2.4 inches)95%moderate
March Weather-5°C (24°F)51 mm (2.0 inches)89%moderate
April Weather3°C (38°F)83 mm (3.3 inches)87%high
May Weather11°C (53°F)82 mm (3.2 inches)73%very high
June Weather17°C (62°F)96 mm (3.8 inches)69%very high
July Weather20°C (68°F)94 mm (3.7 inches)66%very high
August Weather18°C (65°F)96 mm (3.8 inches)71%very high
September Weather14°C (57°F)90 mm (3.6 inches)76%high
October Weather7°C (45°F)124 mm (4.9 inches)85%moderate
November Weather-2°C (29°F)81 mm (3.2 inches)89%moderate
December Weather-8°C (18°F)65 mm (2.5 inches)93%low

Compare Greater Sudbury's Climate with Cities Worldwide