April weather forecastOttawa, Canada
April
Weather in April
April sees the city finally break free from the clutch of winter, welcoming the warm embrace of spring. The transformation from freezing March temperatures to highs of 9.1°C (48.4°F) and lows of 0.4°C (32.7°F) in April becomes the first signal of the changing seasons. Rainfall sees a rise as well, replacing the snow, reflecting the shift in air and ground temperatures. Indeed, April showers bring out the spring bloom, filling Ottawa with renewed vibrancy and life.Temperature
With the onset of April, Ottawa's average high-temperature experiences a noticeable rise, advancing from March's cold 0.8°C (33.4°F) to a chilly 9.1°C (48.4°F). In Ottawa, in April, the average low-temperature is an icy 0.4°C (32.7°F).Humidity
In April, the average relative humidity in Ottawa, Canada, is 79%.Rainfall
In April, in Ottawa, Canada, the rain falls for 14.8 days. Throughout April, 73mm (2.87") of precipitation is accumulated. Throughout the year, there are 149.6 rainfall days, and 772mm (30.39") of precipitation is accumulated.Snowfall
Months with snowfall in Ottawa are January through May, October through December. In Ottawa, during April, snow falls for 4.9 days and regularly aggregates up to 53mm (2.09") of snow. In Ottawa, during the entire year, snow falls for 83.3 days and aggregates up to 1135mm (44.69") of snow.Daylight
The average length of the day in April is 13h and 33min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:31 pm. On the last day of April, sunrise is at 5:51 am and sunset at 8:08 pm EDT.
Sunshine
In Ottawa, the average sunshine in April is 6.7h.UV index
The average daily maximum UV index in April in Ottawa is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 3 in April interprets into the following advice:
Take necessary precautions - Suggestions to elude sunburn are provided. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Ottawa, Canada
- Average high temperature in April: 9.1°C
The warmest month (with the highest average high temperature) is July (25.3°C).
The month with the lowest average high temperature is January (-6.3°C).
- Average low temperature in April: 0.4°C
The month with the highest average low temperature is July (14.5°C).
The coldest month (with the lowest average low temperature) is January (-14.5°C).
Average pressure in April
Ottawa, Canada
- Average pressure in April: 1014.3mbar
The month with the highest atmospheric pressure is March (1018mbar).
The month with the lowest atmospheric pressure is June (1012.5mbar).
Average wind speed in April
Ottawa, Canada
- Average wind speed in April: 14km/h
The windiest month (with the highest average wind speed) is April (14km/h).
The calmest month (with the lowest average wind speed) is July (9.8km/h).
Average humidity in April
Ottawa, Canada
- Average humidity in April: 79%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (77%).
Average rainfall in April
Ottawa, Canada
- Average rainfall in April: 73mm
The wettest month (with the highest rainfall) is October (78mm).
The driest month (with the least rainfall) is September (54mm).
Average rainfall days in April
Ottawa, Canada
- Average rainfall days in April: 14.8 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in April
Ottawa, Canada
- Average snowfall in April: 53mm
The month with the highest snowfall is January (321mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in April
Ottawa, Canada
- Average snowfall days in April: 4.9 days
The month with the highest number of snowfall days is January (19.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Ottawa, Canada
- Average daylight in April: 13h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in April: 6h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in April
Ottawa, Canada
- Average sunshine days in April: 11.6 days
The month with the most sunshine days is September (15 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in April
Ottawa, Canada
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in April
Ottawa, Canada
- Average cloud cover in April: 55
The months with the most cloud cover are January and February (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in April
Ottawa, Canada
- Average visibility in April: 9km
The months with the highest visibility are April, May, June, July, August and October (9km).
The months with the lowest visibility are January and February (7km).
