September weather forecastBarrie, Canada
September
Weather in September
September marks the onset of autumn with temperatures steadily declining from the August high of 23.6°C (74.5°F). This month, in contrast to the summer season, registers a considerable drop in rainfall with a recorded average of 48mm (1.89"). While the city continues to experience extended daylight hours, a decrease in sunlight hours is noticeable. The reduction in temperature and humidity brings about pleasant weather, making September the perfect month for outdoor excursions.Temperature
A moderate decline in average high-temperatures is noted in September, moving from a warm 23.6°C (74.5°F) in August to a pleasant 20.1°C (68.2°F). Barrie anticipates an average minimum temperature of 11.2°C (52.2°F) in the month of September.Humidity
In September, the average relative humidity is 79%.Rainfall
In Barrie, during September, the rain falls for 14.1 days and regularly aggregates up to 48mm (1.89") of precipitation. In Barrie, during the entire year, the rain falls for 145 days and collects up to 621mm (24.45") of precipitation.Snowfall
In Barrie, snow does not fall in June through September.Daylight
In Barrie, the average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:42 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:00 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Barrie, Canada
- Average high temperature in September: 20.1°C
The warmest month (with the highest average high temperature) is July (24.2°C).
The month with the lowest average high temperature is January (-4.3°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is July (14.9°C).
The coldest month (with the lowest average low temperature) is January (-10.4°C).
Average pressure in September
Barrie, Canada
- Average pressure in September: 1016.8mbar
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
Barrie, Canada
- Average wind speed in September: 11.6km/h
The windiest month (with the highest average wind speed) is February (16.4km/h).
The calmest month (with the lowest average wind speed) is July (10.5km/h).
Average humidity in September
Barrie, Canada
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (89%).
The months with the lowest relative humidity are April and May (78%).
Average rainfall in September
Barrie, Canada
- Average rainfall in September: 48mm
The wettest month (with the highest rainfall) is July (75mm).
The driest month (with the least rainfall) is February (26mm).
Average rainfall days in September
Barrie, Canada
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is August (18.1 days).
The month with the least rainy days is February (4 days).
Average snowfall in September
Barrie, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is January (121mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Barrie, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Barrie, Canada
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 42min
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 24min).
Average sunshine days in September
Barrie, Canada
- Average sunshine days in September: 12.9 days
The month with the most sunshine days is March (14.3 days).
The months with the least sunshine days are July and August (9.8 days).
Average UV index in September
Barrie, Canada
- Average UV index in September: 4
The months with the highest UV index are 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
Barrie, Canada
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Barrie, Canada
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January, February and December (8km).
