April weather forecast
Waterloo, Canada

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Weather in April

April in Waterloo presents clearer signs of spring. A significant drop in snowfall occurs with only 37mm (1.46") accumulated over 4.6 days. This noticeable reduction in snowfall indicates the end of the city's snowy period. Consequently, rainfall takes precedence as the main form of precipitation for the rest of the year. With the weather warming up, trees, flowers, and other flora start to bud and bloom, invigorating the city with signs of life and colour.

Temperature

April brings a temperature increase, with average high-temperatures moving from March's cold 3.2°C (37.8°F) to a fresh 10.1°C (50.2°F). During April, the temperature is averaged to a low of 1.4°C (34.5°F) at night.

Humidity

With an average relative humidity of 75%, April is the least humid month in Waterloo.

Rainfall

In April, in Waterloo, the rain falls for 14.7 days. Throughout April, 69mm (2.72") of precipitation is accumulated. Throughout the year, in Waterloo, there are 157.6 rainfall days, and 681mm (26.81") of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Waterloo, in April, during 4.6 snowfall days, 37mm (1.46") of snow is typically accumulated. Throughout the year, in Waterloo, there are 80.1 snowfall days, and 666mm (26.22") of snow is accumulated.

Daylight

The average length of the day in April is 13h and 27min.
On the first day of April, sunrise is at 7:02 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 8:23 pm EDT.

Sunshine

In April, the average sunshine in Waterloo is 6.9h.

UV index

In April, the average daily maximum UV index in Waterloo is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 3 in April translates into this advice:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Frequently asked questions

What are April temperatures in Waterloo?

In Waterloo, in April, the average high-temperature is 10.1°C (50.2°F), and the average low-temperature is 1.4°C (34.5°F).

What is the least humid month in Waterloo?

The least humid month in Waterloo, Canada, is April, with an average relative humidity of 75%.

What is the average humidity in April in Waterloo?

The average relative humidity in April in Waterloo, Canada, is 75%.

How many days does it rain in April in Waterloo?

In Waterloo, Canada, in April, it is raining for 14.7 days, with typically 69mm (2.72") of accumulated precipitation.

How many days does it snow in April in Waterloo?

In April, in Waterloo, Canada, it is snowing for 4.6 days. Throughout April, 37mm (1.46") of snow is accumulated.

What is the average length of the day in April in Waterloo?

In Waterloo, Canada, the average day length in April is 13h and 27min.

What time are sunrise and sunset in April in Waterloo?

On the first day of April, sunrise is at 7:02 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 8:23 pm EDT.

How long on average sun shines in April in Waterloo?

The average sunshine duration in April in Waterloo, Canada, is 6.9h.

What is the UV index reading in April in Waterloo?

The average daily maximum UV index in April in Waterloo, Canada, is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Waterloo, Canada

Average temperature in April - Waterloo, Canada
  • Average high temperature in April: 10.1°C

The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-3.7°C).

  • Average low temperature in April: 1.4°C

The month with the highest average low temperature is July (15°C).
The coldest month (with the lowest average low temperature) is January (-9.3°C).

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Average pressure in April
Waterloo, Canada

Average pressure in April - Waterloo, Canada
  • Average pressure in April: 1014.8mbar

The month with the highest atmospheric pressure is March (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).

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Average wind speed in April
Waterloo, Canada

Average wind speed in April - Waterloo, Canada
  • Average wind speed in April: 17.4km/h

The windiest month (with the highest average wind speed) is January (18.1km/h).
The calmest month (with the lowest average wind speed) is July (11km/h).

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Average humidity in April
Waterloo, Canada

Average humidity in April - Waterloo, Canada
  • Average humidity in April: 75%

The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in April
Waterloo, Canada

Average rainfall in April - Waterloo, Canada
  • Average rainfall in April: 69mm

The wettest month (with the highest rainfall) is October (71mm).
The driest month (with the least rainfall) is September (37mm).

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Average rainfall days in April
Waterloo, Canada

Average rainfall days in April - Waterloo, Canada
  • Average rainfall days in April: 14.7 days

The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is February (6.4 days).

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Average snowfall in April
Waterloo, Canada

Average snowfall in April - Waterloo, Canada
  • Average snowfall in April: 37mm

The month with the highest snowfall is February (164mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in April
Waterloo, Canada

Average snowfall days in April - Waterloo, Canada
  • Average snowfall days in April: 4.6 days

The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in April /
Average sunshine in April
Waterloo, Canada

Average daylight in April / Average sunshine in April - Waterloo, Canada
  • Average daylight in April: 13h and 3min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in April: 6h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

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Average sunshine days in April
Waterloo, Canada

Average sunshine days in April - Waterloo, Canada
  • Average sunshine days in April: 10.7 days

The month with the most sunshine days is September (13.9 days).
The month with the least sunshine days is February (6.7 days).

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Average UV index in April
Waterloo, Canada

Average UV index in April - Waterloo, Canada
  • Average UV index in April: 3

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

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Average cloud cover in April
Waterloo, Canada

Average cloud cover in April - Waterloo, Canada
  • Average cloud cover in April: 53

The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 34).

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Average visibility in April
Waterloo, Canada

Average visibility in April - Waterloo, Canada
  • Average visibility in April: 9km

The months with the highest visibility are April, May, June, July and October (9km).
The month with the lowest visibility is January (7km).

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Waterloo, Canada

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