September weather forecast
Vancouver, Canada

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The Coal Harbor, and trees of the Stanley Park, with the city of Vancouver, Canada
The Coal Harbor, and trees of the Stanley Park, with the city of Vancouver, Canada

Weather in September

September signals the onset of autumn in Vancouver, with a prominent shift from the summery heat to cooler temperatures. The month records a significant rise in rainfall to 82mm (3.23"), from August's 41mm (1.61"), an early sign of the impending winter. Cooler winds start to rustle the falling leaves, providing a scenic beauty to Vancouver's urban landscape. Foggy mornings and dew-laden vegetation characterize this month's mornings, offering captivating scenes to morning walkers. The weather in September marks a transition from the uniform climatic conditions of August to the colder, wetter October.

Temperature

With September's advent, Vancouver sees an average high-temperature of a still comfortable 16.3°C (61.3°F), subtly shifted from August's 19.2°C (66.6°F). In Vancouver, the month of September records an average minimum temperature of 11.3°C (52.3°F), a slight dip from the daily highs.

Humidity

The average relative humidity in September is 80%.

Rainfall

In September, in Vancouver, the rain falls for 14.2 days. Throughout September, 82mm (3.23") of precipitation is accumulated. Throughout the year, there are 192.4 rainfall days, and 1325mm (52.17") of precipitation is accumulated.

Snowfall

In Vancouver, snow does not fall in May through October.

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.
Note: Entering waters of 11.3°C (52.3°F) is life-endangering. A mere moment in 13°C (55.4°F) waters feels piercing cold, and below 10°C (50°F) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.

Daylight

The average length of the day in September is 12h and 34min.
On the first day of the month, sunrise is at 6:29 am and sunset at 7:54 pm. On the last day of September, in Vancouver, sunrise is at 7:12 am and sunset at 6:52 pm PDT.

Sunshine

The average sunshine in September in Vancouver is 8.8h.

UV index

The average daily maximum UV index in September in Vancouver, Canada, is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 3 during September leads to these instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Updated: Feb 5, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What are September temperatures in Vancouver?

In Vancouver, 16.3°C (61.3°F) is the average high-temperature and 11.3°C (52.3°F) is the average low-temperature during September.

What is the average humidity in September in Vancouver?

In Vancouver, Canada, the average relative humidity in September is 80%.

How much does it rain in Vancouver in September?

In Vancouver, in September, it is raining for 14.2 days, with typically 82mm (3.23") of accumulated precipitation.

When it does not snow in Vancouver?

May through October are months without snowfall in Vancouver.

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 in Vancouver, Canada.

What is the water temperature in September in Vancouver?

In Vancouver, Canada, the average seawater temperature in September is 11.3°C (52.3°F). 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.

How many hours of daylight does Vancouver have in September?

The average day length in September in Vancouver is 12h and 34min.

When is the sunrise / sunset in September in Vancouver?

On the first day of September in Vancouver, Canada, sunrise is at 6:29 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:52 pm PDT.

How long on average sun shines in September in Vancouver?

In Vancouver, the average sunshine duration in September is 8.8h.

What is the UV index reading in September in Vancouver?

The average daily maximum UV index in September in Vancouver is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Vancouver, Canada

Average temperature in September - Vancouver, Canada
  • Average high temperature in September: 16.3°C

The warmest month (with the highest average high temperature) is July (19.3°C).
The month with the lowest average high temperature is December (4.7°C).

  • Average low temperature in September: 11.3°C

The month with the highest average low temperature is August (13.4°C).
The coldest month (with the lowest average low temperature) is December (1.9°C).

Average pressure in September
Vancouver, Canada

Average pressure in September - Vancouver, Canada
  • Average pressure in September: 1016.2mbar

The month with the highest atmospheric pressure is January (1018.1mbar).
The month with the lowest atmospheric pressure is March (1015.7mbar).

Average wind speed in September
Vancouver, Canada

Average wind speed in September - Vancouver, Canada
  • Average wind speed in September: 7.4km/h

The windiest month (with the highest average wind speed) is November (11.4km/h).
The calmest month (with the lowest average wind speed) is August (6.3km/h).

Average humidity in September
Vancouver, Canada

Average humidity in September - Vancouver, Canada
  • Average humidity in September: 80%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is July (75%).

Average rainfall in September
Vancouver, Canada

Average rainfall in September - Vancouver, Canada
  • Average rainfall in September: 82mm

The wettest month (with the highest rainfall) is November (209mm).
The driest month (with the least rainfall) is July (24mm).

Average rainfall days in September
Vancouver, Canada

Average rainfall days in September - Vancouver, Canada
  • Average rainfall days in September: 14.2 days

The month with the highest number of rainy days is March (20.6 days).
The month with the least rainy days is August (8.8 days).

Average snowfall in September
Vancouver, Canada

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

The month with the highest snowfall is February (67mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in September
Vancouver, Canada

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

The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in September
Vancouver, Canada

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

The 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 / Average sunshine in September - Vancouver, 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 month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 3h and 54min).

Average sunshine days in September
Vancouver, Canada

Average sunshine days in September - Vancouver, Canada
  • Average sunshine days in September: 13.9 days

The month with the most sunshine days is August (19.4 days).
The months with the least sunshine days are February and March (8.3 days).

Average UV index in September
Vancouver, Canada

Average UV index in September - Vancouver, 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
Vancouver, Canada

Average cloud cover in September - Vancouver, Canada
  • Average cloud cover in September: 35

The months with the most cloud cover are January and December (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 26).

Average visibility in September
Vancouver, Canada

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

The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (9km).

Vancouver, Canada

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