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
September's arrival aligns with a minor decrease in average high-temperatures, from August's pleasant 20.4°C (68.7°F) to a comfortable 16.8°C (62.2°F). In the month of September, Chemainus's average low-temperature falls to a chilly 9.6°C (49.3°F).Humidity
The average relative humidity in September is 81%.Rainfall
In Chemainus, in September, it is raining for 15.2 days, with typically 73mm (2.87") of accumulated precipitation. Throughout the year, there are 201.4 rainfall days, and 1213mm (47.76") of precipitation is accumulated.Snowfall
May through October are months without snowfall in Chemainus.Daylight
The average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 6:32 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 6:54 pm PDT.
Sunshine
The average sunshine in September in Chemainus is 8.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: A maximum UV index of 3 in September translates into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
What is the temperature in September in Chemainus?
What is the average humidity in September in Chemainus?
How much does it rain in Chemainus in September?
When it does not snow in Chemainus?
What is the average length of the day in September in Chemainus?
When is the sunrise / sunset in September in Chemainus?
How many hours of sunshine does Chemainus have in September?
How high is the UV index in September in Chemainus?
Average temperature in September
Chemainus, 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
Chemainus, 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
Chemainus, 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
Chemainus, 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
Chemainus, 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
Chemainus, 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
Chemainus, 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
Chemainus, 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
Chemainus, 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
Chemainus, 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
Chemainus, 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
Chemainus, 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
Chemainus, 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).
Chemainus, Canada
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