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Canada weather

Weather in Barrie for September 2025

Your guide to Barrie weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Barrie is cooler than usual, with temperatures averaging 20.5 °C, this is -2.1 °C below the typical seasonal average.

  • The forecast for the next days in Barrie predicts temperatures to be around 24 °C, close to the historical average.

  • In general, the average temperature in Barrie at the beginning of September is 23.1 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 21.9 °C by the end of September.

    • Rain 🌧️

  • The climate of Barrie in September is notably wet, with an average of 11 rainy days, and a total of 95 mm of precipitation.

    • More

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

Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/13°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Barrie Weather September

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

Temperatures trend during September in Barrie

See the weather trend as well as the moving average line

September weather in Barrie 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° /11° 0 mm 6
2 Sept. Patchy rain possible
Patchy rain possible
 22° /11° 0.2 mm 5
3 Sept. Partly cloudy
Partly cloudy
 26° /13° 0.8 mm 6
4 Sept. Patchy rain possible
Patchy rain possible
 25° /14° 25.7 mm 6
5 Sept. Partly cloudy
Partly cloudy
 27° /13° 0 mm 7
6 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 22° /14° 8.5 mm 5
7 Sept. Light rain shower
Light rain shower
 17° /12° 10.9 mm 4
8 Sept. Overcast
Overcast
 19° /8° 0.2 mm 4
9 Sept. Cloudy
Cloudy
 22° /9° 2.5 mm 5
10 Sept. Overcast
Overcast
 22° /11° 0 mm 5
11 Sept. Partly cloudy
Partly cloudy
 23° /12° 0.7 mm 6
12 Sept. Heavy rain
Heavy rain
 23° /14° 11.7 mm 5
13 Sept. Overcast
Overcast
 22° /14° 0 mm 5
14 Sept. Partly cloudy
Partly cloudy
 25° /13° 0 mm 1.2
15 Sept. Mist
Mist
 24° /12° 0 mm 1.3
16 Sept. Partly cloudy
Partly cloudy
 24° /11° 0 mm 1.3
17 Sept. Sunny
Sunny
 28° /13° 0 mm 1.3
18 Sept. Sunny
Sunny
 29° /14° 0 mm 0
19 Sept. Partly cloudy
Partly cloudy
 23° /14° 0 mm 5
20 Sept. Partly cloudy
Partly cloudy
 21° /10° 0.1 mm 5
21 Sept. Patchy rain possible
Patchy rain possible
 27° /12° 5 mm 4
22 Sept. Patchy rain possible
Patchy rain possible
 17° /11° 0.8 mm 3
23 Sept. Sunny
Sunny
 18° /9° 0 mm 4
24 Sept. Sunny
Sunny
 21° /10° 0 mm 4
25 Sept. Sunny
Sunny
 25° /11° 0 mm 5
26 Sept. Sunny
Sunny
 22° /9° 0 mm 5
27 Sept. Sunny
Sunny
 26° /12° 0 mm 5
28 Sept. Overcast
Overcast
 19° /11° 0 mm 4
29 Sept. Cloudy
Cloudy
 21° /14° 0 mm 5
30 Sept. Mist
Mist
 19° /12° 0 mm 5
Next
Important Notice
Our weather forecast for Barrie 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 Barrie forecast closer to your planned date for the most up-to-date weather information.
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Barrie in September - FAQ

What are the expected maximum and minimum temperatures in Barrie 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 Barrie during September?
Moderate rainfall is anticipated in Barrie during September, with a total of 95 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Barrie during September?
The average wind speed in Barrie during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Barrie

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

UV exposure in Barrie during September

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

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Location coordinates Where is Barrie?

Get accurate weather forecasts for Barrie, located at latitude 44.4 and longitude -79.666. Stay updated with localized weather information tailored for Barrie.

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