Windsor
Canada
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Windsor, Canada

The first month of the autumn, September, is still a pleasant month in Windsor, Canada, with temperature in the range of an average low of 14.6°C (58.3°F) and an average high of 22.4°C (72.3°F).

Temperature

In September, the average high-temperature slightly decreases, from a moderately hot 25.8°C (78.4°F) in August, to an agreeable 22.4°C (72.3°F). In September, in Windsor, the average low-temperature is 14.6°C (58.3°F).

Humidity

The average relative humidity in Windsor is 74%.

Rainfall

In Windsor, during 13.1 rainfall days, 44mm (1.73") of precipitation is typically accumulated. In Windsor, during the entire year, the rain falls for 152.1 days and collects up to 595mm (23.43") of precipitation.

Snowfall

In Windsor snow does not fall in June through September.

Sea temperature

In September, the average sea temperature in Windsor is 21.4°C (70.5°F).
Note: For most, swimming in 21.4°C (70.5°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 Windsor, the average length of the day is 12.5h.

Sunshine

The average sunshine in September is 8.3h.

UV index

In Windsor, Canada, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Windsor?

The average high-temperature, in September, in Windsor, Canada, is 22.4°C (72.3°F), while the average low-temperature is 14.6°C (58.3°F).

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.

Does it snow in Windsor in September?

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

When it does not snow in Windsor?

In Windsor snow does not fall in June through September.

How cold is the water in September in Windsor?

In Windsor, in September, the average water temperature is 21.4°C (70.5°F). 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).

How many hours of daylight does Windsor have in September?

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

How long on average sun shines in September in Windsor?

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

How high is the UV index in September in Windsor?

In Windsor, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.
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).

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%).

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 lowest rainfall) is February (31mm).

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 lowest number of rainy days is January (7.1 days).

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

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

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 lowest number of snowfall days are June, July, August and September (0 days).

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).

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 shortest days is December (Average daylight: 9.1h).

  • Average sunshine in September: 8.3h

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

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).