September weather forecast and climate
Chemainus, Canada

Weather in September

The first month of the autumn, September, is also an enjoyable month in Chemainus, Canada, with average temperature varying between 16.8°C (62.2°F) and 9.6°C (49.3°F).

Temperature

In Chemainus, the average high-temperature in September slightly decreases, from an agreeable 20.4°C (68.7°F) in August, to an enjoyable 16.8°C (62.2°F). In September, in Chemainus, the average low-temperature is 9.6°C (49.3°F).

Humidity

In Chemainus, the average relative humidity in September is 81%.

Rainfall

In Chemainus, in September, during 15.2 rainfall days, 73mm (2.87") of precipitation is typically accumulated. In Chemainus, during the entire year, the rain falls for 201.4 days and collects up to 1213mm (47.76") of precipitation.

Snowfall

May through October are months without snowfall in Chemainus.

Daylight

In Chemainus, the average length of the day is 12.6h.

Sunshine

The average sunshine in Chemainus is 8.3h.

UV index

In September, the average daily maximum UV index in Chemainus is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 3 in September interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Chemainus?

In September, in Chemainus, Canada, the average high-temperature is 16.8°C (62.2°F), and the average low-temperature is 9.6°C (49.3°F).

What is the average humidity in September in Chemainus?

The average relative humidity in September in Chemainus, Canada, is 81%.

How many days does it rain in September in Chemainus?

In Chemainus, Canada, in September, during 15.2 rainfall days, 73mm (2.87") of precipitation is typically accumulated.

When it does not snow in Chemainus?

May through October are months without snowfall in Chemainus.

What is the average length of the day in September in Chemainus?

In Chemainus, the average length of the day in September is 12.6h.

How long on average sun shines in September in Chemainus?

In Chemainus, the average sunshine in September is 8.3h.

What is the UV index intensity in September in Chemainus?

In September, the average daily maximum UV index in Chemainus, Canada, is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in September
Chemainus, Canada

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).

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Average pressure in September
Chemainus, Canada

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).

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Average wind speed in September
Chemainus, Canada

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).

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Average humidity in September
Chemainus, Canada

Average humidity in September - Chemainus, Canada
  • Average humidity in September: 81%

Months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is July (75%).

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Average rainfall in September
Chemainus, Canada

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).

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Average rainfall days in September
Chemainus, Canada

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).

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Average snowfall in September
Chemainus, Canada

Average snowfall in September - Chemainus, Canada
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (143mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in September
Chemainus, Canada

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).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Chemainus, Canada

Average daylight in September / Average sunshine in September - Chemainus, Canada
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.3h).

  • Average sunshine in September: 8.3h

The month with the most sunshine is July (Average sunshine: 10.4h).
Months with the least sunshine are January and December (Average sunshine: 3.6).

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Average sunshine days in September
Chemainus, Canada

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).

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Average UV index in September
Chemainus, Canada

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).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Chemainus, Canada

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).
Months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in September
Chemainus, Canada

Average visibility in September - Chemainus, Canada
  • Average visibility in September: 9km

Months with the highest visibility are March, April, May, June, July, August, September and October (9km).
Months with the lowest visibility are January, February, November and December (8km).

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