Ottawa
Canada
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Ottawa, Canada

A view of The Parliament Hill from the Ottawa River in Ottawa, Canada
A view of The Parliament Hill from the Ottawa River in Ottawa, Canada
April in Ottawa, Canada, is a fresh spring month, with temperature in the range of an average high of 11.6°C (52.9°F) and an average low of 1°C (33.8°F).

Temperature

In Ottawa, Canada, the average high-temperature increases considerably, from a cold 2.5°C (36.5°F) in March, to a cool 11.6°C (52.9°F). The average low-temperature, in April, is 1°C (33.8°F).

Humidity

The average relative humidity in Ottawa, Canada, is 50.2%.

Rainfall

In Ottawa, in April, it is raining for 10.9 days, with typically 63mm (2.5") of accumulated precipitation. Throughout the year, in Ottawa, there are 118.4 rainfall days, and 758.4mm (29.9") of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In April, in Ottawa, it is snowing for 3.5 days. Throughout April, 113mm (4.4") of snow is accumulated. Throughout the year, in Ottawa, there are 63.3 snowfall days, and 2234mm (88") of snow is accumulated.

Daylight

In April, the average length of the day is 13.6h.

Sunshine

In Ottawa, Canada, the average sunshine is 6.3h.

UV index

In Ottawa, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: In April, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in April in Ottawa?

The average high-temperature, in April, is 11.6°C (52.9°F), while the average low-temperature is 1°C (33.8°F).

What is the average humidity in April in Ottawa?

In April, the average relative humidity is 50.2%.

How much does it rain in Ottawa in April?

In Ottawa, Canada, in April, during 10.9 rainfall days, 63mm (2.5") of precipitation is typically accumulated.

How many days does it snow in April in Ottawa?

In Ottawa, in April, snow falls for 3.5 days, with typically accumulated 113mm (4.4") of snow.

How many hours of daylight does Ottawa have in April?

The average length of the day in April in Ottawa is 13.6h.

How long on average sun shines in April in Ottawa?

In April, the average sunshine in Ottawa, Canada, is 6.3h.

How high is the UV index in April in Ottawa?

In Ottawa, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.
Average temperature in April - Ottawa, Canada
  • Average high temperature in April: 11.6°C

The warmest month (with the highest average high temperature) is July (26.5°C).
The month with the lowest average high temperature is January (-5.8°C).

  • Average low temperature in April: 1°C

The month with the highest average low temperature is July (15.5°C).
The coldest month (with the lowest average low temperature) is January (-14.8°C).

Average humidity in April - Ottawa, Canada
  • Average humidity in April: 50.2%

The month with the highest relative humidity is December (72.2%).
The month with the lowest relative humidity is May (49.9%).

Average rainfall in April - Ottawa, Canada
  • Average rainfall in April: 63mm

The wettest month (with the highest rainfall) is June (92.8mm).
The driest month (with the lowest rainfall) is February (18.7mm).

Average rainfall days in April - Ottawa, Canada
  • Average rainfall days in April: 10.9 days

The month with the highest number of rainy days is October (13.7 days).
The month with the lowest number of rainy days is February (3.9 days).

Average snowfall in April - Ottawa, Canada
  • Average snowfall in April: 113mm

The month with the highest snowfall is January (539mm).
Months with the lowest snowfall are June, July, August and September (0mm).

Average snowfall days in April - Ottawa, Canada
  • Average snowfall days in April: 3.5 days

The month with the highest number of snowfall days is January (16.1 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in April / Average sunshine in April - Ottawa, Canada
  • Average daylight in April: 13.6h

The month with the longest days is June (Average daylight: 15.6h).
The month with shortest days is December (Average daylight: 8.8h).

  • Average sunshine in April: 6.3h

The month with most sunshine is July (Average sunshine: 9.7h).
The month with least sunshine is December (Average sunshine: 2.2h).

Average UV index in April - Ottawa, Canada
  • Average UV index in April: 5

The month with the highest UV index is June (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).