Vancouver
Canada
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Vancouver, Canada

Aerial view of the Coal Harbor and trees of Stanley Park, with the city of Vancouver, Canada
Aerial view of the Coal Harbor and trees of Stanley Park, with the city of Vancouver, Canada
September, the first month of the autumn, in Vancouver, is also an enjoyable month, with temperature in the range of an average low of 10.8°C (51.4°F) and an average high of 18.9°C (66°F).

Temperature

In Vancouver, the average high-temperature in September slightly decreases, from an agreeable 22.2°C (72°F) in August, to a comfortable 18.9°C (66°F). In September, the average low-temperature is 10.8°C (51.4°F).

Humidity

The average relative humidity in Vancouver is 67.2%.

Rainfall

In Vancouver, Canada, during 8.3 rainfall days, 50.9mm (2") of precipitation is typically accumulated. In Vancouver, during the entire year, the rain falls for 165.1 days and collects up to 1153.1mm (45.4") of precipitation.

Snowfall

In Vancouver, Canada, it doesn't snow. In October, it regularly snows. In Vancouver, during the entire year, snow aggregates up to 381mm (15").

Sea temperature

August and September, with an average sea temperature of 11.3°C (52.3°F), are months with the warmest seawater in Vancouver, Canada. Swimming in 11.3°C (52.3°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The average length of the day is 12.6h.

Sunshine

In Vancouver, the average sunshine is 7.1h.

UV index

In Vancouver, Canada, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV rays for the average person.
The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Vancouver?

In Vancouver, Canada, in September, the average high-temperature is 18.9°C (66°F), and the average low-temperature is 10.8°C (51.4°F).

What is the average humidity in September in Vancouver?

In September, the average relative humidity in Vancouver, Canada, is 67.2%.

How many days does it rain in September in Vancouver?

In Vancouver, in September, it is raining for 8.3 days, with typically 50.9mm (2") of accumulated precipitation.

Does it snow in Vancouver in September?

In Vancouver, Canada, in September, it doesn't snow. In October, it regularly snows.

When is the sea warmest in Vancouver?

August and September, with an average sea temperature of 11.3°C (52.3°F), are months with the warmest seawater. Swimming in 11.3°C (52.3°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

How cold is the water in September in Vancouver?

In Vancouver, the average seawater temperature in September is 11.3°C (52.3°F). Swimming in 11.3°C (52.3°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

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

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

How long on average sun shines in September in Vancouver?

In September, the average sunshine is 7.1h.

What is the UV index reading in September in Vancouver?

In September, the average daily maximum UV index in Vancouver, Canada, is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - Vancouver, Canada
  • Average high temperature in September: 18.9°C

Warmest months (with the highest average high temperature) are July and August (22.2°C).
The month with the lowest average high temperature is December (6.3°C).

  • Average low temperature in September: 10.8°C

The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is December (0.8°C).

Average humidity in September - Vancouver, Canada
  • Average humidity in September: 67.2%

The month with the highest relative humidity is January (81.2%).
The month with the lowest relative humidity is July (61.4%).

Average rainfall in September - Vancouver, Canada
  • Average rainfall in September: 50.9mm

The wettest month (with the highest rainfall) is November (185.8mm).
The driest month (with the lowest rainfall) is July (35.6mm).

Average rainfall days in September - Vancouver, Canada
  • Average rainfall days in September: 8.3 days

The month with the highest number of rainy days is November (19.9 days).
The month with the lowest number of rainy days is July (6.3 days).

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

The month with the highest snowfall is December (148mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

Average snowfall days in September - Vancouver, Canada
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (2.8 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in September - Vancouver, Canada
  • Average sea temperature in September: 11.3°C

Best months for swimming (with the highest average sea temperature) are August and September (11.3°C).
The coldest month (with the lowest average sea temperature) is February (6.8°C).

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

The month with the longest days is June (Average daylight: 16.2h).
The month with shortest days is December (Average daylight: 8.3h).

  • Average sunshine in September: 7.1h

The month with most sunshine is July (Average sunshine: 9.3h).
The month with least sunshine is December (Average sunshine: 1.8h).

Average UV index in September - Vancouver, Canada
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 1).