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Weather in Oakville for September 2025

Your guide to Oakville weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Oakville at the beginning of September is 26.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20 °C by the end of September.

    • Rain 🌧️

  • Oakville experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 44.8 mm.

    • More

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Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/15°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Oakville in September average weather

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
24°
2
Fog
23°
3
Thundery outbreaks possible
28°
4
Partly cloudy
29°
5
Cloudy
30°
6
Thundery outbreaks possible
28°
7
Light rain shower
21°
8
Overcast
22°
9
Overcast
22°
10
Overcast
22°
11
Cloudy
24°
12
Light rain shower
25°
13
Overcast
22°
14
Mist
22°
15
Sunny
24°
16
Fog
25°
17
Patchy light drizzle
21°
18
Mist
21°
19
Overcast
20°
20
Partly cloudy
21°
21
Fog
22°
22
Fog
21°
23
Fog
20°
24
Partly cloudy
20°
25
Cloudy
22°
26
Partly cloudy
22°
27
Overcast
18°
28
Patchy rain possible
18°
29
Overcast
20°
30
Mist
20°
Select a date

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Access Oakville weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
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Temperatures trend during September in Oakville

See the weather trend as well as the moving average line

September weather day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 24° /14° 0.2 mm 6
2 Sept. Fog
Fog
 23° /12° 0.4 mm 6
3 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 28° /14° 0.6 mm 7
4 Sept. Partly cloudy
Partly cloudy
 29° /16° 0 mm 7
5 Sept. Cloudy
Cloudy
 30° /17° 0 mm 7
6 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 28° /19° 7.1 mm 7
7 Sept. Light rain shower
Light rain shower
 21° /14° 3.6 mm 5
8 Sept. Overcast
Overcast
 22° /12° 0 mm 5
9 Sept. Overcast
Overcast
 22° /13° 0.8 mm 5
10 Sept. Overcast
Overcast
 22° /14° 0 mm 5
11 Sept. Cloudy
Cloudy
 24° /15° 0.1 mm 5
12 Sept. Light rain shower
Light rain shower
 25° /15° 2.5 mm 6
13 Sept. Overcast
Overcast
 22° /14° 0 mm 6
14 Sept. Mist
Mist
 22° /13° 0 mm 6
15 Sept. Sunny
Sunny
 24° /14° 0 mm 7
16 Sept. Fog
Fog
 25° /14° 0 mm 6
17 Sept. Patchy light drizzle
Patchy light drizzle
 21° /15° 2.8 mm 5
18 Sept. Mist
Mist
 21° /15° 0 mm 5
19 Sept. Overcast
Overcast
 20° /12° 0 mm 5
20 Sept. Partly cloudy
Partly cloudy
 21° /13° 0 mm 5
21 Sept. Fog
Fog
 22° /15° 0 mm 5
22 Sept. Fog
Fog
 21° /16° 0 mm 5
23 Sept. Fog
Fog
 20° /15° 3.4 mm 5
24 Sept. Partly cloudy
Partly cloudy
 20° /15° 0 mm 5
25 Sept. Cloudy
Cloudy
 22° /16° 19.8 mm 5
26 Sept. Partly cloudy
Partly cloudy
 22° /15° 0.5 mm 5
27 Sept. Overcast
Overcast
 18° /12° 0 mm 4
28 Sept. Patchy rain possible
Patchy rain possible
 18° /15° 3 mm 4
29 Sept. Overcast
Overcast
 20° /16° 0 mm 5
30 Sept. Mist
Mist
 20° /15° 0 mm 5
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Important Notice
Our weather forecast for Oakville in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Oakville forecast closer to your planned date for the most up-to-date weather information.

Oakville in September - FAQ

What are the expected maximum and minimum temperatures in Oakville during September?
During September, expect a variety of temperatures with highs around 22° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Oakville during September?
In September, Oakville can expect light to moderate rainfall, totaling 44.8 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Oakville during September?
The average wind speed in Oakville during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Oakville

Explore the daily rainfall trends and prepare for Oakvilles September weather 💧

UV exposure in Oakville during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Oakville?

Get accurate weather forecasts for Oakville, located at latitude 43.45 and longitude -79.683. Stay updated with localized weather information tailored for Oakville.

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