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
The onset of September brings a small shift in high-temperatures, falling from a moderately hot 24°C (75.2°F) in August to a pleasant 20.8°C (69.4°F). Waterloo, during September, witnesses an average low-temperature of 10.9°C (51.6°F).Humidity
In Waterloo, the average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall in Waterloo, Canada. Rain falls for 13.2 days and accumulates 37mm (1.46") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Waterloo is 12h and 29min.On the first day of September, sunrise is at 6:46 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:04 pm EDT.
Sunshine
The average sunshine in September in Waterloo is 8.3h.UV index
In September, the average daily maximum UV index in Waterloo is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Frequently asked questions
What is the usual temperature for Waterloo in September?
What is the average humidity in September in Waterloo?
What is the driest month in Waterloo?
How much does it rain in Waterloo in September?
When it does not snow in Waterloo?
Does it snow in Waterloo in September?
How many hours of daylight does Waterloo have in September?
When are sunrise and sunset in September in Waterloo?
How long on average sun shines in September in Waterloo?
What is the UV index intensity in September in Waterloo?
Average temperature in September
Waterloo, Canada
- Average high temperature in September: 20.8°C
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-3.7°C).
- Average low temperature in September: 10.9°C
The month with the highest average low temperature is July (15°C).
The coldest month (with the lowest average low temperature) is January (-9.3°C).
Average pressure in September
Waterloo, Canada
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is March (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).
Average wind speed in September
Waterloo, Canada
- Average wind speed in September: 11.9km/h
The windiest month (with the highest average wind speed) is January (18.1km/h).
The calmest month (with the lowest average wind speed) is July (11km/h).
Average humidity in September
Waterloo, Canada
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Waterloo, Canada
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is October (71mm).
The driest month (with the least rainfall) is September (37mm).
Average rainfall days in September
Waterloo, Canada
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in September
Waterloo, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (164mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Waterloo, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Waterloo, 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: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Waterloo, Canada
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is September (13.9 days).
The month with the least sunshine days is February (6.7 days).
Average UV index in September
Waterloo, Canada
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Waterloo, Canada
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in September
Waterloo, Canada
- Average visibility in September: 8km
The months with the highest visibility are April, May, June, July and October (9km).
The month with the lowest visibility is January (7km).
Waterloo, Canada
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