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
September
Weather in September
Temperature
The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a moderately hot 23.8°C (74.8°F) in August to a pleasant 20.3°C (68.5°F). Nightly temperatures in Port Perry drop to an average low of 13.4°C (56.1°F) in September.Humidity
The average relative humidity in September in Port Perry is 77%.Rainfall
In Port Perry, in September, during 14.1 rainfall days, 52mm (2.05") of precipitation is typically accumulated. In Port Perry, during the entire year, the rain falls for 158.8 days and collects up to 693mm (27.28") of precipitation.Snowfall
In Port Perry, Canada, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 30min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:13 am and sunset at 6:57 pm EDT.
Sunshine
The average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In September, the UV index of 4 transforms into the following advice:
Ensure safety - Recommendations to avert sunburn are presented. To protect against the Sun's most potent rays, avoid direct exposure around midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Port Perry?
What is the average humidity in September in Port Perry?
How many days does it rain in September in Port Perry?
When it does not snow in Port Perry?
How many hours of daylight does Port Perry have in September?
When are sunrise and sunset in September in Port Perry?
How many hours of sunshine does Port Perry have in September?
What is the UV index reading in September in Port Perry?
Average temperature in September
Port Perry, 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
Port Perry, 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
Port Perry, 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
Port Perry, 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
Port Perry, 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
Port Perry, 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
Port Perry, 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
Port Perry, 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
Port Perry, 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: 8h and 54min).
- 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
Port Perry, 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
Port Perry, 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
Port Perry, 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
Port Perry, 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).
