September weather forecast and climate
Mississauga, Canada

Weather in September

The first month of the autumn, September, is also an agreeable month in Mississauga, Canada, with average temperature ranging between max 21.5°C (70.7°F) and min 15.5°C (59.9°F).

Temperature

In September, the average high-temperature marginally drops, from a warm 24.6°C (76.3°F) in August, to a pleasant 21.5°C (70.7°F). In Mississauga, the average low-temperature is 15.5°C (59.9°F).

Humidity

The least humid month is September, with an average relative humidity of 74%.

Rainfall

September and November are months with the least rain in Mississauga when the rain falls for 15.1 days and typically aggregates up to 55mm (2.17") of rain.

Snowfall

In Mississauga snow does not fall in June through September.

Sea temperature

In Mississauga, the average seawater temperature is 20.2°C (68.4°F).
Note: For most, swimming in 20.2°C (68.4°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

In Mississauga, Canada, the average length of the day is 12.5h.

Sunshine

The average sunshine in September is 9.4h.

UV index

In Mississauga, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Mississauga?

In Mississauga, Canada, in September, the average high-temperature is 21.5°C (70.7°F), and the average low-temperature is 15.5°C (59.9°F).

What is the least humid month in Mississauga?

With an average relative humidity of 74%, September is the least humid month in Mississauga.

What is the average humidity in September in Mississauga?

The average relative humidity in September is 74%.

How much does it rain in Mississauga in September?

In Mississauga, Canada, in September, it is raining for 15.1 days, with typically 55mm (2.17") of accumulated precipitation.

What is the driest month in Mississauga?

September and November are months with the least rain in Mississauga when the rain falls for 15.1 days and typically aggregates up to 55mm (2.17") of rain.

Does it snow in Mississauga in September?

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

When it does not snow in Mississauga?

In Mississauga, Canada, snow does not fall in June through September.

How cold is the water in September in Mississauga?

In September, the average sea temperature in Mississauga, Canada, is 20.2°C (68.4°F). For most, swimming in 20.2°C (68.4°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

How many hours of daylight does Mississauga have in September?

In Mississauga, the average length of the day in September is 12.5h.

How many hours of sunshine does Mississauga have in September?

In Mississauga, Canada, the average sunshine in September is 9.4h.

How high is the UV index in September in Mississauga?

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in September
Mississauga, Canada

Average temperature in September - Mississauga, Canada
  • Average high temperature in September: 21.5°C

The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-1.4°C).

  • Average low temperature in September: 15.5°C

The month with the highest average low temperature is July (18.6°C).
The coldest month (with the lowest average low temperature) is January (-6.1°C).

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Average pressure in September
Mississauga, Canada

Average pressure in September - Mississauga, Canada
  • Average pressure in September: 1017.2mbar

The month with the highest atmospheric pressure is November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).

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Average wind speed in September
Mississauga, Canada

Average wind speed in September - Mississauga, Canada
  • Average wind speed in September: 14.1km/h

The windiest month (with the highest average wind speed) is January (21km/h).
The calmest month (with the lowest average wind speed) is July (12.1km/h).

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Average humidity in September
Mississauga, Canada

Average humidity in September - Mississauga, Canada
  • Average humidity in September: 74%

Months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is September (74%).

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Average rainfall in September
Mississauga, Canada

Average rainfall in September - Mississauga, Canada
  • Average rainfall in September: 55mm

The wettest month (with the highest rainfall) is July (80mm).
The driest months (with the least rainfall) are September and November (55mm).

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Average rainfall days in September
Mississauga, Canada

Average rainfall days in September - Mississauga, Canada
  • Average rainfall days in September: 15.1 days

The month with the highest number of rainy days is October (18.9 days).
The month with the least rainy days is February (8.8 days).

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Average snowfall in September
Mississauga, Canada

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

The month with the highest snowfall is February (127mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in September
Mississauga, Canada

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

The month with the highest number of snowfall days is February (14.1 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in September
Mississauga, Canada

Average sea temperature in September - Mississauga, Canada
  • Average sea temperature in September: 20.2°C

The best month for swimming (with the highest average sea temperature) is August (22.3°C).
The coldest months (with the lowest average sea temperature) are February and March (1.4°C).

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

Average daylight in September / Average sunshine in September - Mississauga, Canada
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in September: 9.4h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is January (Average sunshine: 2.8h).

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Average sunshine days in September
Mississauga, Canada

Average sunshine days in September - Mississauga, Canada
  • Average sunshine days in September: 13 days

The month with the most sunshine days is September (13 days).
The month with the least sunshine days is January (7.5 days).

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Average UV index in September
Mississauga, Canada

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

Months with the highest UV index are July and August (UV index 6).
Months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in September
Mississauga, Canada

Average cloud cover in September - Mississauga, Canada
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in September
Mississauga, Canada

Average visibility in September - Mississauga, Canada
  • Average visibility in September: 10km

Months with the highest visibility are June, July, August and September (10km).
Months with the lowest visibility are January and February (8km).

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