June weather forecastSarnia, Canada
June
Weather in June
June, the first month of the summer in Sarnia, is an agreeable month, with an average temperature varying between 22.3°C (72.1°F) and 13.1°C (55.6°F).Temperature
The onset of June marks a slight increase in the average high-temperature, moving from a comfortable 18°C (64.4°F) in May to a pleasant 22.3°C (72.1°F). The mean low-temperature during June nights is a moderate 13.1°C (55.6°F).Humidity
In Sarnia, the average relative humidity in June is 78%.Rainfall
In Sarnia, during June, the rain falls for 13.7 days and regularly aggregates up to 48mm (1.89") of precipitation. Throughout the year, in Sarnia, there are 140.4 rainfall days, and 493mm (19.41") of precipitation is accumulated.Snowfall
In Sarnia, snow does not fall in June through September.Sea temperature
In Sarnia, in June, the average water temperature is 15.6°C (60.1°F).Note: Swimming is not a pleasurable activity for most people when the water temperature is 15.6°C (60.1°F). Breathing control gets harder as the water temperature drops from 21°C (69.8°F) to 15°C (59°F).
Daylight
June has the longest days of the year in Sarnia, with an average of 15h and 18min of daylight.On the first day of the month, sunrise is at 5:52 am and sunset at 9:02 pm. On the last day of June, in Sarnia, sunrise is at 5:54 am and sunset at 9:12 pm EDT.
Sunshine
In June, the average sunshine in Sarnia is 9.9h.UV index
In Sarnia, the average daily maximum UV index in June is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 5 in June converts into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Sarnia, Canada
- Average high temperature in June: 22.3°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 June: 13.1°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 June
Sarnia, Canada
- Average pressure in June: 1013.5mbar
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 June
Sarnia, Canada
- Average wind speed in June: 12.4km/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 June
Sarnia, Canada
- Average humidity in June: 78%
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 June
Sarnia, Canada
- Average rainfall in June: 48mm
The wettest month (with the highest rainfall) is May (54mm).
The driest month (with the least rainfall) is February (28mm).
Average rainfall days in June
Sarnia, Canada
- Average rainfall days in June: 13.7 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 June
Sarnia, Canada
- Average snowfall in June: 0mm
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 June
Sarnia, Canada
- Average snowfall days in June: 0 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 June
Sarnia, Canada
- Average sea temperature in June: 15.6°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 June /
Average sunshine in June
Sarnia, Canada
- Average daylight in June: 15h and 18min
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 June: 9h and 54min
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 June
Sarnia, Canada
- Average sunshine days in June: 13.9 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 June
Sarnia, Canada
- Average UV index in June: 5
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 June
Sarnia, Canada
- Average cloud cover in June: 35
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 June
Sarnia, Canada
- Average visibility in June: 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).





