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Canada weather

Weather in Welland for September 2025

Your guide to Welland weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Welland has been significantly cooler than historical averages by -2 °C, with average temperature of 21.6 °C.

  • Expect cooler weather in the next days in Welland with the forecast suggesting a temperature of 22.1 °C, lower than the historical average.

  • In general, the average temperature in Welland at the beginning of September is 24 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.9 °C by the end of September.

    • Rain 🌧️

  • Welland experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 22.2 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

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
72 %
Avg humidity

Welland Weather September

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

Temperatures trend during September in Welland

See the weather trend as well as the moving average line

September weather in Welland day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 24° /12° 0.2 mm 6
2 Sept. Overcast
Overcast
 22° /14° 0.4 mm 5
3 Sept. Partly cloudy
Partly cloudy
 25° /13° 0 mm 6
4 Sept. Partly cloudy
Partly cloudy
 26° /16° 2.8 mm 6
5 Sept. Partly cloudy
Partly cloudy
 26° /15° 0 mm 7
6 Sept. Fog
Fog
 25° /16° 1.3 mm 5
7 Sept. Light rain shower
Light rain shower
 20° /13° 2.9 mm 4
8 Sept. Light rain shower
Light rain shower
 21° /11° 0.3 mm 5
9 Sept. Overcast
Overcast
 23° /12° 0.2 mm 5
10 Sept. Light rain shower
Light rain shower
 22° /14° 3.2 mm 5
11 Sept. Partly cloudy
Partly cloudy
 24° /14° 0 mm 6
12 Sept. Light rain shower
Light rain shower
 25° /14° 1.1 mm 6
13 Sept. Overcast
Overcast
 23° /13° 0 mm 5
14 Sept. Partly cloudy
Partly cloudy
 26° /14° 0 mm 1.3
15 Sept. Cloudy
Cloudy
 25° /12° 0 mm 1.4
16 Sept. Partly cloudy
Partly cloudy
 25° /13° 0 mm 1.3
17 Sept. Cloudy
Cloudy
 26° /12° 0 mm 1.3
18 Sept. Sunny
Sunny
 28° /17° 0 mm 0
19 Sept. Sunny
Sunny
 21° /13° 0 mm 5
20 Sept. Sunny
Sunny
 23° /9° 0 mm 4
21 Sept. Sunny
Sunny
 24° /12° 0 mm 5
22 Sept. Patchy rain possible
Patchy rain possible
 22° /16° 1.5 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
 21° /17° 3.9 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 23° /17° 4.9 mm 4
25 Sept. Patchy rain possible
Patchy rain possible
 19° /14° 3.1 mm 4
26 Sept. Sunny
Sunny
 13° /9° 0 mm 4
27 Sept. Sunny
Sunny
 14° /7° 0 mm 3
28 Sept. Light drizzle
Light drizzle
 19° /14° 0.2 mm 5
29 Sept. Mist
Mist
 22° /16° 0 mm 5
30 Sept. Mist
Mist
 22° /14° 0 mm 5
Next
Important Notice
Our weather forecast for Welland 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 Welland forecast closer to your planned date for the most up-to-date weather information.
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Welland in September - FAQ

What are the expected maximum and minimum temperatures in Welland 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 Welland during September?
In September, Welland can expect light to moderate rainfall, totaling 22.2 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Welland during September?
The average wind speed in Welland during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Welland

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

UV exposure in Welland during September

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

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Location coordinates Where is Welland?

Get accurate weather forecasts for Welland, located at latitude 42.983 and longitude -79.25. Stay updated with localized weather information tailored for Welland.

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