September weather forecast
Quebec city, Canada

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Weather in September

September heralds the start of autumn in Quebec City. The weather begins to cool, signaling a transition from the warm summer months. Lush green foliage gradually mutates into hues of amber and gold, accompanied by temperatures within 8°C (46.4°F) to 18°C (64.4°F). The city's vibrancy takes on a different tone in the fall, with a slight nip in the air invigorating the atmosphere.

Temperature

With the onset of September, Quebec city's average high-temperature adjusts, receding from August's warm 24°C (75.2°F) to an enjoyable 18°C (64.4°F). An average temperature of 8°C (46.4°F) marks the nights in Quebec city in September.

Rainfall

September is the month with the most rainfall in Quebec city. Rain falls for 15 days and accumulates 123mm (4.84") of precipitation.

Sea temperature

In Quebec city, in September, the average water temperature is 12.3°C (54.1°F).
Note: It is advised against swimming in 12.3°C (54.1°F) when it drops below 10°C (50°F). Such temperatures can cause extreme cold shock, leading to hyperventilation.

Daylight

In September, the average length of the day is 12h and 32min.
On the first day of the month, sunrise is at 6:05 am and sunset at 7:23 pm. On the last day of September, in Quebec city, sunrise is at 6:43 am and sunset at 6:25 pm EDT.

Sunshine

In Quebec city, the average sunshine in September is 5h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.

Frequently asked questions

What is the average September temperature in Quebec city?

The high-temperature, in September, in Quebec city, is 18°C (64.4°F), while the low-temperature averages to 8°C (46.4°F).

What is the rainiest month in Quebec city?

September is the month with the most rainfall. Rain falls for 15 days and accumulates 123mm (4.84") of precipitation.

How many days does it rain in September in Quebec city?

In Quebec city, during September, the rain falls for 15 days and regularly aggregates up to 123mm (4.84") of precipitation.

What is the sea water temperature in September in Quebec city?

In September, the average sea temperature in Quebec city, Canada, is 12.3°C (54.1°F). Swimming in 12.3°C (54.1°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 Quebec city have in September?

In September, the average day length is 12h and 32min.

When are sunrise and sunset in September in Quebec city?

In September, on the first day of the month, sunrise is at 6:05 am and sunset at 7:23 pm. On the last day of the month, in Quebec city, Canada, sunrise is at 6:43 am and sunset at 6:25 pm EDT.

How many hours of sunshine does Quebec city have in September?

In September, the average sunshine duration is 5h.

What is the UV index reading in September in Quebec city?

The average daily maximum UV index in September in Quebec city, Canada, is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Quebec city, Canada

Average temperature in September - Quebec city, Canada
  • Average high temperature in September: 18°C

The warmest month (with the highest average high temperature) is July (25°C).
The month with the lowest average high temperature is January (-8°C).

  • Average low temperature in September: 8°C

The month with the highest average low temperature is July (14°C).
The coldest month (with the lowest average low temperature) is January (-17°C).

Average rainfall in September
Quebec city, Canada

Average rainfall in September - Quebec city, Canada
  • Average rainfall in September: 123mm

The wettest month (with the highest rainfall) is September (123mm).
The driest month (with the least rainfall) is February (70mm).

Average rainfall days in September
Quebec city, Canada

Average rainfall days in September - Quebec city, Canada
  • Average rainfall days in September: 15 days

The month with the highest number of rainy days is December (17 days).
The months with the least rainy days are March and April (12 days).

Average sea temperature in September
Quebec city, Canada

Average sea temperature in September - Quebec city, Canada
  • Average sea temperature in September: 12.3°C

The best month for swimming (with the highest average sea temperature) is August (14.1°C).
The coldest month (with the lowest average sea temperature) is February (0.8°C).

Average daylight in September /
Average sunshine in September
Quebec city, Canada

Average daylight in September / Average sunshine in September - Quebec city, Canada
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in September: 5h

The months with the most sunshine are June and July (Average sunshine: 8h).
The months with the least sunshine are January, November and December (Average sunshine: 3h).

Average UV index in September
Quebec city, Canada

Average UV index in September - Quebec city, Canada
  • Average UV index in September: 5

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, November and December (UV index 1).

Quebec city, Canada

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