April weather forecastSarnia, Canada
April
Weather in April
April is a fresh spring month in Sarnia, Canada, with an average temperature fluctuating between 10.7°C (51.3°F) and 2.8°C (37°F).Temperature
In Sarnia, the onset of April comes with an increased average high-temperature, moving from March's cold 4.2°C (39.6°F) to a cool 10.7°C (51.3°F). An average low-temperature of 2.8°C (37°F) marks the nights in Sarnia throughout April.Humidity
April and May, with an average relative humidity of 76%, are the least humid months in Sarnia.Rainfall
In Sarnia, in April, it is raining for 14.7 days, with typically 53mm (2.09") of accumulated precipitation. Throughout the year, in Sarnia, there are 140.4 rainfall days, and 493mm (19.41") of precipitation is accumulated.Snowfall
Months with snowfall in Sarnia are January through May, October through December. In Sarnia, Canada, in April, during 2.3 snowfall days, 17mm (0.67") of snow is typically accumulated. Throughout the year, in Sarnia, there are 55.2 snowfall days, and 312mm (12.28") of snow is accumulated.Sea temperature
In Sarnia, Canada, in April, the average water temperature is 2.9°C (37.2°F).Note: Within swimming, this is perceived as extraordinarily cold, dangerous, and potentially lethal. If not properly protected by insulated waterproof attire, hypothermia ensues quickly.
Daylight
The average length of the day in April is 13h and 26min.On the first day of April, sunrise is at 7:10 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 8:29 pm EDT.
Sunshine
In April, the average sunshine in Sarnia is 7.1h.UV index
In Sarnia, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 3 in April converts into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Sarnia, Canada
- Average high temperature in April: 10.7°C
The warmest month (with the highest average high temperature) is July (25.8°C).
The month with the lowest average high temperature is January (-2.3°C).
- Average low temperature in April: 2.8°C
The month with the highest average low temperature is July (16.3°C).
The coldest month (with the lowest average low temperature) is January (-7.5°C).
Average pressure in April
Sarnia, Canada
- Average pressure in April: 1014.8mbar
The month with the highest atmospheric pressure is March (1018.8mbar).
The month with the lowest atmospheric pressure is June (1013.5mbar).
Average wind speed in April
Sarnia, Canada
- Average wind speed in April: 17km/h
The windiest month (with the highest average wind speed) is January (18.2km/h).
The calmest month (with the lowest average wind speed) is July (11km/h).
Average humidity in April
Sarnia, Canada
- Average humidity in April: 76%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in April
Sarnia, Canada
- Average rainfall in April: 53mm
The wettest month (with the highest rainfall) is May (54mm).
The driest month (with the least rainfall) is February (28mm).
Average rainfall days in April
Sarnia, Canada
- Average rainfall days in April: 14.7 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in April
Sarnia, Canada
- Average snowfall in April: 17mm
The month with the highest snowfall is February (99mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in April
Sarnia, Canada
- Average snowfall days in April: 2.3 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in April
Sarnia, Canada
- Average sea temperature in April: 2.9°C
The best month for swimming (with the highest average sea temperature) is August (23.2°C).
The coldest months (with the lowest average sea temperature) are February and March (0.3°C).
Average daylight in April /
Average sunshine in April
Sarnia, Canada
- Average daylight in April: 13h and 24min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in April: 7h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in April
Sarnia, Canada
- Average sunshine days in April: 12.2 days
The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (11.3 days).
Average UV index in April
Sarnia, Canada
- Average UV index in April: 3
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Sarnia, Canada
- Average cloud cover in April: 50
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in April
Sarnia, Canada
- Average visibility in April: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
