Mississauga Weather: September
 |
Average Day Temperature: | 73.3°F |
|
Average Night Temperature: | 61.6°F |
|
Sea Water Temperature: | 69.0°F |
|
Number of Sunny Days: | 15 days |
| Sunshine Hours: | 11.8 - 13.2 hours | |
|
Number of Rainy Days: | 1 day |
| Precipitation Totals: | 0.6 in | |
| detailed information | ||
forecast
| Mississauga |
Temperature
| Mississauga |
Air Temperature in September, °F
The highest day temperature in September 2025 was 85°F. The lowest night temperature was 51°F. The average values for day and night temperatures during September were 75.8°F и 60.7°F respectivly.
Mississauga Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Mississauga was 67.3°F. The maximum and minimum values were 60.4°F and 72.0°F respectively.
Most of the days in September are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in September, in
Precipitation total in September for Mississauga is 0.6 in. It makes september the least rainy month of the year.
The average wind speed in September is 7.2 mph. It makes September one of the most windless months of the year for Mississauga.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Mississauga in September is 8.1 hours.
Mississauga on the Weather Map
| Halifax |  |
+6 |
| Kingston |  |
+4 |
| Moncton | |
-10 |
| Montreal | |
-2 |
| Niagara Falls | |
+10 |
| Ottawa | |
-6 |
| Prince Edward Island | |
+2 |
| Quebec | |
-12 |
| Rocky Harbour |  |
+22 |
| St. John's |  |
+36 |
| Sydney |  |
+16 |
| Toronto | |
+10 |
| Vancouver | |
+42 |
| Victoria | |
+44 |
| Winnipeg | |
+8 |
| 0600 |  |
12°F | NE 6 mph |
| 0900 |  |
18°F | NE 6 mph |
| 1200 |  |
24°F | NE 11 mph |
| 1500 | |
28°F | NE 9 mph |
| 1800 | |
26°F | NE 7 mph |
| 2100 |  |
26°F | NE 6 mph |
| 0000 | |
26°F | NE 8 mph |
| 0300 | |
28°F | NE 8 mph |