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 shift from August to September coincides with a small decrease in the average high-temperature, down to an agreeable 21.8°C (71.2°F) from a warm 25°C (77°F). The nighttime temperature dips to a mild 14.2°C (57.6°F) on average during September.Humidity
The least humid month is September, with an average relative humidity of 75%.Rainfall
September is the month with the least rainfall. Rain falls for 14.8 days and accumulates 53mm (2.09") of precipitation.Snowfall
In Port Colborne, snow does not fall in June through September.Daylight
In Port Colborne, Canada, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:13 am and sunset at 6:59 pm EDT.
Sunshine
The average sunshine in September in Port Colborne is 8.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
What are the temperatures in Port Colborne in September?
What is the least humid month in Port Colborne?
What is the average humidity in September in Port Colborne?
What is the driest month in Port Colborne?
How many days does it rain in September in Port Colborne?
When it does not snow in Port Colborne?
Does it snow in Port Colborne in September?
What is the average length of the day in September in Port Colborne?
When is the sunrise / sunset in September in Port Colborne?
How long on average sun shines in September in Port Colborne?
What is the UV index intensity in September in Port Colborne?
Average temperature in September
Port Colborne, Canada
- Average high temperature in September: 21.8°C
The warmest month (with the highest average high temperature) is July (25.7°C).
The month with the lowest average high temperature is January (-1.5°C).
- Average low temperature in September: 14.2°C
The month with the highest average low temperature is July (17.5°C).
The coldest month (with the lowest average low temperature) is January (-6.7°C).
Average pressure in September
Port Colborne, Canada
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).
Average wind speed in September
Port Colborne, Canada
- Average wind speed in September: 12.9km/h
The windiest month (with the highest average wind speed) is January (19.6km/h).
The calmest month (with the lowest average wind speed) is July (11.6km/h).
Average humidity in September
Port Colborne, Canada
- Average humidity in September: 75%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is September (75%).
Average rainfall in September
Port Colborne, Canada
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is July (86mm).
The driest month (with the least rainfall) is September (53mm).
Average rainfall days in September
Port Colborne, Canada
- Average rainfall days in September: 14.8 days
The month with the highest number of rainy days is July (18.7 days).
The months with the least rainy days are January and February (8.1 days).
Average snowfall in September
Port Colborne, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (179mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Port Colborne, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.8 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 Colborne, Canada
- Average daylight in September: 12h and 3min
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 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Port Colborne, Canada
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is September (12.6 days).
The month with the least sunshine days is January (8.3 days).
Average UV index in September
Port Colborne, 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 Colborne, Canada
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Port Colborne, Canada
- Average visibility in September: 10km
The month with the highest visibility is September (10km).
The months with the lowest visibility are January and February (8km).
Port Colborne, Canada
Weather forecast for your location
2. Allow the app to use your location
