September weather forecastNiagara Falls, Canada
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Niagara Falls, Canada, with an average temperature varying between 15.1°C (59.2°F) and 21.6°C (70.9°F).Temperature
The beginning of September brings a slight decrease in the average high-temperature, transitioning from a warm 25.1°C (77.2°F) in August to a pleasant 21.6°C (70.9°F). Niagara Falls experiences a consistent average temperature of 15.1°C (59.2°F) throughout the nights in September.Humidity
The months with the lowest humidity in Niagara Falls are August and September, with an average relative humidity of 74%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.7 days and typically collects 47mm (1.85") of precipitation.Snowfall
June through September are months without snowfall in Niagara Falls.Sea temperature
In Niagara Falls, in September, the average water temperature is 20.8°C (69.4°F).Note: Most people find swimming in 20.8°C (69.4°F) unenjoyable. As the water temperature falls from 21°C (69.8°F) to 15°C (59°F), controlling one's breathing becomes harder.
Daylight
The average length of the day in September in Niagara Falls is 12h and 29min.On the first day of September in Niagara Falls, sunrise is at 6:41 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:58 pm EDT.
Sunshine
The average sunshine in September is 9.3h.UV index
In Niagara Falls, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Exercise prevention - Warding off sunburn is urged. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Niagara Falls, Canada
- Average high temperature in September: 21.6°C
The warmest month (with the highest average high temperature) is July (25.6°C).
The month with the lowest average high temperature is January (-1.3°C).
- Average low temperature in September: 15.1°C
The month with the highest average low temperature is August (18.3°C).
The coldest month (with the lowest average low temperature) is January (-6.4°C).
Average pressure in September
Niagara Falls, Canada
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is November (1018.6mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).
Average wind speed in September
Niagara Falls, Canada
- Average wind speed in September: 13.2km/h
The windiest month (with the highest average wind speed) is January (19.8km/h).
The calmest month (with the lowest average wind speed) is July (11.5km/h).
Average humidity in September
Niagara Falls, Canada
- Average humidity in September: 74%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall in September
Niagara Falls, Canada
- Average rainfall in September: 47mm
The wettest month (with the highest rainfall) is July (79mm).
The driest month (with the least rainfall) is September (47mm).
Average rainfall days in September
Niagara Falls, Canada
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in September
Niagara Falls, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (181mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Niagara Falls, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Niagara Falls, Canada
- Average sea temperature in September: 20.8°C
The best month for swimming (with the highest average sea temperature) is August (23.2°C).
The coldest month (with the lowest average sea temperature) is February (1.7°C).
Average daylight in September /
Average sunshine in September
Niagara Falls, Canada
- Average daylight in September: 12h and 30min
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 September: 9h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in September
Niagara Falls, Canada
- Average sunshine days in September: 14 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is January (6.8 days).
Average UV index in September
Niagara Falls, Canada
- Average UV index in September: 4
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 September
Niagara Falls, Canada
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Niagara Falls, Canada
- Average visibility in September: 10km
The months with the highest visibility are August and September (10km).
The months with the lowest visibility are January and February (8km).
