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
With the beginning of September, the average high-temperature shows a small decrease, transitioning from an agreeable 20.4°C (68.7°F) in August to an enjoyable 16.8°C (62.2°F). An average temperature of 9.6°C (49.3°F) is recorded during the nights in September.Humidity
In September, the average relative humidity in Lake Cowichan, Canada, is 81%.Rainfall
In Lake Cowichan, during September, the rain falls for 15.2 days and regularly aggregates up to 73mm (2.87") of precipitation. Throughout the year, in Lake Cowichan, Canada, there are 201.4 rainfall days, and 1213mm (47.76") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 34min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:57 pm. On the last day of September, sunrise is at 7:15 am and sunset at 6:56 pm PDT.
Sunshine
The average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September in Lake Cowichan, Canada, is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 3 in September suggests the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Lake Cowichan in September?
What is the average humidity in September in Lake Cowichan?
How many days does it rain in September in Lake Cowichan?
When it does not snow in Lake Cowichan?
How many hours of daylight does Lake Cowichan have in September?
When are sunrise and sunset in September in Lake Cowichan?
How many hours of sunshine does Lake Cowichan have in September?
What is the UV index reading in September in Lake Cowichan?
Average temperature in September
Lake Cowichan, Canada
- Average high temperature in September: 16.8°C
The warmest month (with the highest average high temperature) is August (20.4°C).
The month with the lowest average high temperature is December (4.1°C).
- Average low temperature in September: 9.6°C
The month with the highest average low temperature is August (12°C).
The coldest month (with the lowest average low temperature) is December (0.5°C).
Average pressure in September
Lake Cowichan, Canada
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is July (1017.7mbar).
The month with the lowest atmospheric pressure is March (1015.4mbar).
Average wind speed in September
Lake Cowichan, Canada
- Average wind speed in September: 6.4km/h
The windiest month (with the highest average wind speed) is November (9.4km/h).
The calmest month (with the lowest average wind speed) is August (5.5km/h).
Average humidity in September
Lake Cowichan, Canada
- Average humidity in September: 81%
The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is July (75%).
Average rainfall in September
Lake Cowichan, Canada
- Average rainfall in September: 73mm
The wettest month (with the highest rainfall) is January (189mm).
The driest month (with the least rainfall) is July (27mm).
Average rainfall days in September
Lake Cowichan, Canada
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is March (22.3 days).
The month with the least rainy days is August (9.3 days).
Average snowfall in September
Lake Cowichan, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (143mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Lake Cowichan, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Lake Cowichan, Canada
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 36min).
Average sunshine days in September
Lake Cowichan, Canada
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is August (18.5 days).
The month with the least sunshine days is March (7.2 days).
Average UV index in September
Lake Cowichan, 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
Lake Cowichan, Canada
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Lake Cowichan, Canada
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, November and December (8km).
