Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
A modest decline in the average high-temperature is seen during September, decreasing from a moderately hot 23.8°C (74.8°F) in August to an agreeable 20.3°C (68.5°F). Throughout the nights in September, Bowmanville experiences an average low-temperature of 13.4°C (56.1°F).Humidity
The average relative humidity in September in Bowmanville is 77%.Rainfall
In Bowmanville, in September, during 14.1 rainfall days, 52mm (2.05") of precipitation is typically accumulated. Throughout the year, in Bowmanville, there are 158.8 rainfall days, and 693mm (27.28") of precipitation is accumulated.Snowfall
May through October are months without snowfall in Bowmanville.Daylight
In September, the average length of the day is 12h and 30min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:56 pm EDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
In Bowmanville, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Ensure safety - Sun damage prevention is strongly urged. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
What is the temperature in September in Bowmanville?
What is the average humidity in September in Bowmanville?
How much does it rain in Bowmanville in September?
When it does not snow in Bowmanville?
What is the average length of the day in September in Bowmanville?
When is the sunrise / sunset in September in Bowmanville?
How many hours of sunshine does Bowmanville have in September?
How high is the UV index in September in Bowmanville?
Average temperature in September
Bowmanville, Canada
- Average high temperature in September: 20.3°C
The warmest month (with the highest average high temperature) is July (24.4°C).
The month with the lowest average high temperature is January (-2.9°C).
- Average low temperature in September: 13.4°C
The month with the highest average low temperature is August (16.8°C).
The coldest month (with the lowest average low temperature) is January (-8.3°C).
Average pressure in September
Bowmanville, Canada
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is March (1018.3mbar).
The month with the lowest atmospheric pressure is June (1013mbar).
Average wind speed in September
Bowmanville, Canada
- Average wind speed in September: 13km/h
The windiest month (with the highest average wind speed) is January (18.7km/h).
The calmest month (with the lowest average wind speed) is July (11.4km/h).
Average humidity in September
Bowmanville, Canada
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Bowmanville, Canada
- Average rainfall in September: 52mm
The wettest month (with the highest rainfall) is August (73mm).
The driest months (with the least rainfall) are February and November (43mm).
Average rainfall days in September
Bowmanville, Canada
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in September
Bowmanville, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (110mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Bowmanville, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bowmanville, Canada
- Average daylight in September: 12h 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 September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Bowmanville, Canada
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is November (14.9 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in September
Bowmanville, Canada
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Bowmanville, Canada
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Bowmanville, Canada
- Average visibility in September: 10km
The months with the highest visibility are August and September (10km).
The month with the lowest visibility is January (8km).
Bowmanville, Canada
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