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Weather in Oakville for September 2026

Your guide to Oakville weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Oakville is cooler than usual, with temperatures averaging 20.7 °C, this is 2.8 °C below the typical seasonal average.

  • The forecast for the next days in Oakville predicts temperatures to be around 23 °C, close to the historical average.

  • In general, the average temperature in Oakville at the beginning of September is 23.9 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 21 °C by the end of September.

    • Rain 🌧️

  • Oakville experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 51 mm.

    • More

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Average dry days
20
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/15°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Oakville Weather September

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

Temperatures trend during September in Oakville

See the weather trend as well as the moving average line

September weather in Oakville day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 22° /14° 0.5 mm 5
2 Sept. Fog
Fog
 24° /14° 28.6 mm 4
3 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 26° /15° 0.6 mm 6
4 Sept. Sunny
Sunny
 25° /16° 3.3 mm 6
5 Sept. Cloudy
Cloudy
 26° /16° 0 mm 7
6 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 24° /17° 3.5 mm 6
7 Sept. Light rain shower
Light rain shower
 20° /14° 1.8 mm 5
8 Sept. Overcast
Overcast
 21° /13° 0 mm 5
9 Sept. Overcast
Overcast
 23° /14° 1.5 mm 4
10 Sept. Overcast
Overcast
 22° /14° 0.2 mm 5
11 Sept. Sunny
Sunny
 24° /15° 0 mm 6.1
12 Sept. Overcast
Overcast
 27° /15° 0 mm 6
13 Sept. Partly cloudy
Partly cloudy
 26° /17° 1.4 mm 5.8
14 Sept. Overcast
Overcast
 20° /11° 0 mm 5.6
15 Sept. Overcast
Overcast
 30° /15° 10.9 mm 8
16 Sept. Light rain shower
Light rain shower
 24° /17° 15.2 mm 5
17 Sept. Patchy rain possible
Patchy rain possible
 17° /15° 0.1 mm 4
18 Sept. Sunny
Sunny
 19° /12° 0 mm 5
19 Sept. Sunny
Sunny
 21° /11° 0 mm 6
20 Sept. Sunny
Sunny
 22° /14° 0 mm 6
21 Sept. Sunny
Sunny
 22° /14° 0 mm 6
22 Sept. Overcast
Overcast
 20° /15° 0.2 mm 5
23 Sept. Overcast
Overcast
 20° /14° 0.2 mm 6
24 Sept. Sunny
Sunny
 24° /15° 0 mm 6
25 Sept. Cloudy
Cloudy
 22° /16° 16.8 mm 5
26 Sept. Partly cloudy
Partly cloudy
 22° /15° 0.3 mm 5
27 Sept. Fog
Fog
 19° /13° 0 mm 4
28 Sept. Patchy rain possible
Patchy rain possible
 20° /15° 2 mm 4
29 Sept. Overcast
Overcast
 20° /15° 0 mm 5
30 Sept. Mist
Mist
 20° /15° 0 mm 5
Next
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.
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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?
Moderate rainfall is anticipated in Oakville during September, with a total of 51 mm spread over approximately 10 days. Considering plans for rainy days is advisable.

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 💧
Typically, Oakville has 10 rainy days in September with a total of 51 mm of rainfall.

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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