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 sea temperature 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
Port Alberni observes a small decrease in the average high-temperature with the arrival of September, falling from August's pleasant 20.4°C (68.7°F) to a refreshing 16.9°C (62.4°F). An average temperature of 10.8°C (51.4°F) is recorded in Port Alberni, Canada, during the nights in September.Humidity
The average relative humidity in September is 79%.Rainfall
In Port Alberni, in September, during 12.7 rainfall days, 72mm (2.83") of precipitation is typically accumulated. Throughout the year, there are 177.9 rainfall days, and 904mm (35.59") of precipitation is accumulated.Snowfall
In Port Alberni, snow does not fall in May through October.Sea temperature
In Port Alberni, the average seawater temperature in September is 12°C (53.6°F).Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.
Daylight
In September, the average length of the day is 12h and 34min.On the first day of September in Port Alberni, sunrise is at 6:36 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 6:59 pm PDT.
Sunshine
The average sunshine in September is 8.8h.UV index
In Port Alberni, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 3 during September leads to these advisories:
Act with care - The need to guard against sun damage is communicated. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
What is the usual temperature for Port Alberni in September?
What is the average humidity in September in Port Alberni?
How many days does it rain in September in Port Alberni?
When it does not snow in Port Alberni?
What is the water temperature in September in Port Alberni?
What is the average length of the day in September in Port Alberni?
What time are sunrise and sunset in September in Port Alberni?
How many hours of sunshine does Port Alberni have in September?
What is the UV index intensity in September in Port Alberni?
Average temperature in September
Port Alberni, Canada
- Average high temperature in September: 16.9°C
The warmest month (with the highest average high temperature) is July (20.6°C).
The month with the lowest average high temperature is December (4.3°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is August (13°C).
The coldest month (with the lowest average low temperature) is February (1.2°C).
Average pressure in September
Port Alberni, Canada
- Average pressure in September: 1015.8mbar
The month with the highest atmospheric pressure is July (1017.5mbar).
The month with the lowest atmospheric pressure is March (1014.7mbar).
Average wind speed in September
Port Alberni, Canada
- Average wind speed in September: 6.9km/h
The windiest month (with the highest average wind speed) is November (10.2km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in September
Port Alberni, Canada
- Average humidity in September: 79%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is July (71%).
Average rainfall in September
Port Alberni, Canada
- Average rainfall in September: 72mm
The wettest month (with the highest rainfall) is January (145mm).
The driest month (with the least rainfall) is July (20mm).
Average rainfall days in September
Port Alberni, Canada
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is November (19.7 days).
The month with the least rainy days is August (8.3 days).
Average snowfall in September
Port Alberni, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (71mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Port Alberni, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Port Alberni, Canada
- Average sea temperature in September: 12°C
The best month for swimming (with the highest average sea temperature) is July (12.4°C).
The coldest month (with the lowest average sea temperature) is February (7.8°C).
Average daylight in September /
Average sunshine in September
Port Alberni, Canada
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Port Alberni, Canada
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is August (19.9 days).
The month with the least sunshine days is November (9 days).
Average UV index in September
Port Alberni, Canada
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Port Alberni, Canada
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Port Alberni, Canada
- Average visibility in September: 9km
The months with the highest visibility are May, June, July and August (10km).
The months with the lowest visibility are January, February, March, April, September, October, November and December (9km).
Port Alberni, Canada
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