nomadseason

July Weather in Waterloo, Canada

Last updated: June 18, 2025

In July, the average temperature in Waterloo, Canada hovers around 20°C (69°F), with a comfortable range between a minimum of 8°C (47°F) and a maximum of 33°C (91°F). Expect some wet days, as 123 mm (4.8 in) of precipitation typically falls over 15 days, contributing to an average humidity of 76%. Whether you're planning outdoor activities or cozy indoor options, be prepared for a mix of weather!

July Temperature in Waterloo

In July in Waterloo, the average temperature is 20°C (69°F). The maximum can reach 33°C (91°F), while the minimum can be as low as 8°C (47°F). This makes it a perfect time for traveling, offering comfortable warmth and the opportunity to enjoy outdoor activities while also being prepared for cooler evenings.

July Weather in Waterloo: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Waterloo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waterloo, July typically has an average temperature of 20°C (69°F), with highs reaching up to 33°C (91°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec172028415563696759483323
Data source: Temperature data for Waterloo generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Waterloo

In Waterloo in July, the precipitation amount is 123 mm (4.8 in), occurring over a span of 15 days.

July Precipitation Trends in Waterloo

The chart displays monthly precipitation patterns in Waterloo, 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 Waterloo, July typically receives around 123 mm (4.8 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec9389901201071261231288414712586
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

July Humidity in Waterloo

In Waterloo in July, humidity is 76%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace that can make outdoor activities sticky and uncomfortable, requiring frequent breaks and plenty of hydration for a pleasant travel experience.

July Average Humidity in Waterloo

This chart illustrates the average monthly humidity levels in Waterloo, 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 Waterloo is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%86%85%80%74%76%75%78%86%89%89%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Waterloo

In Waterloo 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 Waterloo.

Maximum UV Index Levels in Waterloo for July

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

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

This table compares monthly weather conditions in Waterloo, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)93 mm (3.7 inches)93%low
February Weather-7°C (20°F)89 mm (3.5 inches)92%moderate
March Weather-2°C (28°F)90 mm (3.5 inches)86%moderate
April Weather5°C (42°F)120 mm (4.7 inches)85%high
May Weather13°C (55°F)106 mm (4.2 inches)80%very high
June Weather17°C (64°F)126 mm (5.0 inches)74%very high
July Weather20°C (69°F)123 mm (4.8 inches)76%very high
August Weather19°C (67°F)128 mm (5.0 inches)75%very high
September Weather15°C (60°F)84 mm (3.3 inches)78%high
October Weather9°C (49°F)147 mm (5.8 inches)86%moderate
November Weather1°C (33°F)125 mm (4.9 inches)88%moderate
December Weather-5°C (23°F)86 mm (3.4 inches)89%low

Compare Waterloo's Climate with Cities Worldwide