September weather forecast and climate
Windsor, Canada

Weather in September

The first month of the autumn, September, is also an agreeable month in Windsor, Canada, with average temperature varying between 14.6°C (58.3°F) and 22.4°C (72.3°F).

Temperature

In September, the average high-temperature marginally drops, from a warm 25.8°C (78.4°F) in August, to a pleasant 22.4°C (72.3°F). In September, in Windsor, the average low-temperature is 14.6°C (58.3°F).

Humidity

In Windsor, the average relative humidity is 74%.

Rainfall

In Windsor, it is raining for 13.1 days, with typically 44mm (1.73") of accumulated precipitation. Throughout the year, there are 152.1 rainfall days, and 595mm (23.43") of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Sea temperature

In Windsor, the average seawater temperature is 21.4°C (70.5°F).
Note: For swimming, a surface water temperature of 21.4°C (70.5°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

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

Sunshine

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

UV index

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the average humidity in September in Windsor?

In September, the average relative humidity in Windsor, Canada, is 74%.

How much does it rain in Windsor in September?

In Windsor, in September, it is raining for 13.1 days, with typically 44mm (1.73") of accumulated precipitation.

When it does not snow in Windsor?

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

Does it snow in Windsor in September?

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

How cold is the water in September in Windsor?

In September, the average sea temperature in Windsor, Canada, is 21.4°C (70.5°F). Swimming in 21.4°C (70.5°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

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

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

How many hours of sunshine does Windsor have in September?

In Windsor, Canada, the average sunshine in September is 8.3h.

What is the UV index reading in September in Windsor?

In September, the average daily maximum UV index in Windsor is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in September
Windsor, Canada

Average temperature in September - Windsor, Canada
  • Average high temperature in September: 22.4°C

The warmest month (with the highest average high temperature) is July (26.6°C).
The month with the lowest average high temperature is January (-1.5°C).

  • Average low temperature in September: 14.6°C

The month with the highest average low temperature is July (18.8°C).
The coldest month (with the lowest average low temperature) is January (-6.9°C).

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Average pressure in September
Windsor, Canada

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

The month with the highest atmospheric pressure is November (1019.2mbar).
The month with the lowest atmospheric pressure is June (1013.5mbar).

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Average wind speed in September
Windsor, Canada

Average wind speed in September - Windsor, Canada
  • Average wind speed in September: 12.8km/h

The windiest month (with the highest average wind speed) is January (16.9km/h).
The calmest month (with the lowest average wind speed) is July (10.9km/h).

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Average humidity in September
Windsor, Canada

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

The month with the highest relative humidity is February (85%).
Months with the lowest relative humidity are July and August (73%).

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Average rainfall in September
Windsor, Canada

Average rainfall in September - Windsor, Canada
  • Average rainfall in September: 44mm

The wettest month (with the highest rainfall) is May (73mm).
The driest month (with the least rainfall) is February (31mm).

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Average rainfall days in September
Windsor, Canada

Average rainfall days in September - Windsor, Canada
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7.1 days).

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Average snowfall in September
Windsor, Canada

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

The month with the highest snowfall is January (109mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in September
Windsor, Canada

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

The month with the highest number of snowfall days is January (14.5 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in September
Windsor, Canada

Average sea temperature in September - Windsor, Canada
  • Average sea temperature in September: 21.4°C

The best month for swimming (with the highest average sea temperature) is August (24.1°C).
The coldest month (with the lowest average sea temperature) is February (0.4°C).

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

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

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in September: 8.3h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is January (Average sunshine: 3.2h).

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Average sunshine days in September
Windsor, Canada

Average sunshine days in September - Windsor, Canada
  • Average sunshine days in September: 15 days

The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (10.7 days).

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Average UV index in September
Windsor, Canada

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

Months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in September
Windsor, Canada

Average cloud cover in September - Windsor, Canada
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in September
Windsor, Canada

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

The month with the highest visibility is October (10km).
The month with the lowest visibility is January (8km).

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