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Canada weather

Weather in Oshawa for September 2027

Your guide to Oshawa weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Oshawa at the beginning of September is 22.9 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 20.9 °C by the end of September.

    • Rain 🌧️

  • With an average of 5 rainy days, Oshawa experiences minimal rainfall in September.

    • More

  • Is September a good time to visit Oshawa? check out the best time to travel to Oshawa page.

  • ✨ Is September a good time to visit Oshawa? – Ask the AI Weatherman

Average dry days
25
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/13°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Oshawa Weather September

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

Temperatures trend during September in Oshawa

See the weather trend as well as the moving average line

September weather in Oshawa day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 23° /15° 0.4 mm 5
2 Sept. Heavy rain
Heavy rain
 23° /15° 105.7 mm 4
3 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 25° /15° 0 mm 6
4 Sept. Light rain
Light rain
 24° /16° 9.5 mm 6
5 Sept. Sunny
Sunny
 25° /16° 0.3 mm 7
6 Sept. Overcast
Overcast
 22° /16° 0.7 mm 6
7 Sept. Light rain
Light rain
 19° /13° 4 mm 5
8 Sept. Overcast
Overcast
 21° /11° 0 mm 5
9 Sept. Light rain
Light rain
 21° /14° 4.5 mm 4
10 Sept. Overcast
Overcast
 22° /13° 0.1 mm 6
11 Sept. Overcast
Overcast
 22° /14° 0.1 mm 5
12 Sept. Patchy rain possible
Patchy rain possible
 23° /14° 1.3 mm 5
13 Sept. Overcast
Overcast
 21° /15° 0.2 mm 4
14 Sept. Sunny
Sunny
 22° /12° 0 mm 5
15 Sept. Sunny
Sunny
 21° /13° 0.2 mm 4
16 Sept. Partly cloudy
Partly cloudy
 23° /13° 0 mm 5
17 Sept. Overcast
Overcast
 22° /13° 0.2 mm 4
18 Sept. Fog
Fog
 22° /13° 0 mm 5
19 Sept. Overcast
Overcast
 20° /10° 0 mm 5
20 Sept. Partly cloudy
Partly cloudy
 21° /9° 0 mm 4
21 Sept. Overcast
Overcast
 20° /13° 0 mm 5
22 Sept. Moderate rain
Moderate rain
 21° /12° 11.6 mm 5
23 Sept. Moderate rain
Moderate rain
 20° /14° 13.8 mm 5
24 Sept. Light rain
Light rain
 20° /13° 3.8 mm 5
25 Sept. Moderate rain
Moderate rain
 23° /13° 13.6 mm 5
26 Sept. Partly cloudy
Partly cloudy
 22° /13° 0 mm 5
27 Sept. Overcast
Overcast
 20° /12° 0 mm 3
28 Sept. Overcast
Overcast
 21° /13° 0.1 mm 4
29 Sept. Overcast
Overcast
 20° /13° 0 mm 4
30 Sept. Overcast
Overcast
 21° /13° 0 mm 4
Next
Important Notice
Our weather forecast for Oshawa 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 Oshawa forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Oshawa in September - FAQ

What are the expected maximum and minimum temperatures in Oshawa during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Oshawa during September?
Significant rainfall exceeding 170 mm is expected in Oshawa during September, occurring over more than 5 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Oshawa during September?
The average wind speed in Oshawa during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Oshawa

Explore the daily rainfall trends and prepare for Oshawas September weather 💧
Typically, Oshawa has 5 rainy days in September with a total of 170 mm of rainfall.

UV exposure in Oshawa during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Get accurate weather forecasts for Oshawa, located at latitude 43.9 and longitude -78.85. Stay updated with localized weather information tailored for Oshawa.

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