September weather forecastPort Rowan, Canada
September
Weather in September
September, the first month of the autumn in Port Rowan, is still a pleasant month, with an average temperature varying between 21.5°C (70.7°F) and 12.3°C (54.1°F).Temperature
September is characterized by a mild reduction in the average high-temperature, from a moderately hot 24.8°C (76.6°F) in August to an agreeable 21.5°C (70.7°F). In Port Rowan, the September nights cool down to an average low of 12.3°C (54.1°F).Humidity
In September, the average relative humidity is 79%.Rainfall
September is the month with the least rainfall in Port Rowan. Rain falls for 13.4 days and accumulates 39mm (1.54") of precipitation.Snowfall
In Port Rowan, snow does not fall in June through September.Daylight
In Port Rowan, the average length of the day in September is 12h and 29min.On the first day of September in Port Rowan, sunrise is at 6:47 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:04 pm EDT.
Sunshine
In September, the average sunshine is 8.8h.UV index
The average daily maximum UV index in September in Port Rowan is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Undertake precautions - Guarding against sun damage is counselled. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Port Rowan, Canada
- Average high temperature in September: 21.5°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 (-2.7°C).
- Average low temperature in September: 12.3°C
The month with the highest average low temperature is July (15.9°C).
The coldest month (with the lowest average low temperature) is January (-8.1°C).
Average pressure in September
Port Rowan, Canada
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is March (1018.6mbar).
The month with the lowest atmospheric pressure is June (1013.4mbar).
Average wind speed in September
Port Rowan, Canada
- Average wind speed in September: 11.8km/h
The windiest month (with the highest average wind speed) is January (18km/h).
The calmest month (with the lowest average wind speed) is July (10.9km/h).
Average humidity in September
Port Rowan, Canada
- Average humidity in September: 79%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April and May (75%).
Average rainfall in September
Port Rowan, Canada
- Average rainfall in September: 39mm
The wettest month (with the highest rainfall) is July (74mm).
The driest month (with the least rainfall) is September (39mm).
Average rainfall days in September
Port Rowan, Canada
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in September
Port Rowan, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (155mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Port Rowan, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Port Rowan, 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: 8h and 48min
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 September
Port Rowan, Canada
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is September (13.6 days).
The month with the least sunshine days is February (8.8 days).
Average UV index in September
Port Rowan, Canada
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Port Rowan, Canada
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Port Rowan, 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).
