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Weather in Oakville for September 2025

Your guide to Oakville weather in September - trends and predictions
  • 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.

  • Oakville sees moderate rainfall in September, averaging 7 rainy days.

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Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/14°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
70 %
Avg humidity

Oakville in September average weather

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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

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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?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Oakville during September?
Expect minimal rainfall in Oakville during September, with a total of 19.4 mm over approximately 7 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Oakville during September?
The average wind speed in Oakville during September is 17 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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