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March Weather in Waterloo, Canada

Last updated: June 18, 2025

In March, the average temperature in Waterloo, Canada hovers around -2°C (28°F). Visitors should be prepared for a range, as the temperature can plummet to a chilling -23°C (-9°F) or rise to a warm 21°C (70°F). Rain is also a possibility, with 90 mm (3.5 in) of precipitation expected over about 13 days. Don't forget, the average humidity is quite high at 86%, adding to the overall atmosphere of the season.

March Temperature in Waterloo

In March in Waterloo, the average temperature is -2°C (28°F), with maximums reaching 21°C (70°F) and minimums dropping as low as -23°C (-9°F). Overall, travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates March 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, March typically has an average temperature of -2°C (28°F), with highs reaching up to 21°C (70°F) and lows dropping to around -23°C (-9°F).
JanFebMarAprMayJunJulAugSepOctNovDec172028415563696759483323
Data source: Temperature data for Waterloo 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.

March Precipitation in Waterloo

In Waterloo in March, the precipitation amount is 90 mm (3.5 in) over the course of 13 days.

March Precipitation Trends in Waterloo

The chart displays monthly precipitation patterns in Waterloo, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Waterloo, March typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec9389901201071261231288414712586
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Waterloo

In Waterloo in March, humidity is 86%. With an average temperature of -2°C (28°F), this humidity feels like a dense fog wrapping around you, making it feel even colder and creating an uncomfortable chill that can dampen any plans for outdoor exploration.

March Average Humidity in Waterloo

This chart illustrates the average monthly humidity levels in Waterloo, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Waterloo is approximately 86%, 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 March generated using information from the Copernicus Climate Change Service.

March UV Index in Waterloo

In Waterloo in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Waterloo.

Maximum UV Index Levels in Waterloo for March

The chart shows the monthly maximum UV Index (UVI) for Waterloo in March, 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 March, the maximum UV index in Waterloo typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799987532
Data source: Waterloo March 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 March 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 March’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 March’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

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