Barrie
September
Weather in Barrie for September 2025
Your guide to Barrie weather in September - trends and predictions
In general, the average temperature in Barrie at the beginning of September is 24.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.9 °C by the end of September.
Barrie sees moderate rainfall in September, averaging 8 rainy days.
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22
Dry days
8
Rainy days
0
Snow days
23°/12°
Temperatures
16 km/h
Avg max wind
71 %
Avg humidity
Barrie in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  23° | 2  21° | 3 27° | 4 29° | 5 30° | 6  25° | 7  18° |
| 8  19° | 9  21° | 10 22° | 11 23° | 12  23° | 13 22° | 14 23° |
| 15  24° | 16 25° | 17 21° | 18 21° | 19 21° | 20  22° | 21 23° |
| 22 23° | 23 20° | 24 20° | 25 22° | 26 20° | 27 18° | 28 19° |
| 29 21° | 30 19° |
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Temperatures trend during September in Barrie
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. | Partly cloudy | 23° /12° | 0 mm | 6 | |
| 2 Sept. | Patchy rain possible | 21° /11° | 0.2 mm | 6 | |
| 3 Sept. | Partly cloudy | 27° /13° | 1.1 mm | 7 | |
| 4 Sept. | Patchy rain possible | 29° /15° | 0.6 mm | 7 | |
| 5 Sept. | Partly cloudy | 30° /16° | 0 mm | 8 | |
| 6 Sept. | Thundery outbreaks possible | 25° /18° | 12.8 mm | 6 | |
| 7 Sept. | Moderate or heavy rain shower | 18° /12° | 11.4 mm | 5 | |
| 8 Sept. | Overcast | 19° /8° | 0.4 mm | 5 | |
| 9 Sept. | Cloudy | 21° /10° | 3.7 mm | 5 | |
| 10 Sept. | Overcast | 22° /12° | 0 mm | 5 | |
| 11 Sept. | Light rain shower | 23° /13° | 1 mm | 6 | |
| 12 Sept. | Heavy rain | 23° /14° | 17.6 mm | 6 | |
| 13 Sept. | Overcast | 22° /13° | 0 mm | 6 | |
| 14 Sept. | Cloudy | 23° /12° | 0 mm | 6 | |
| 15 Sept. | Mist | 24° /11° | 0 mm | 6 | |
| 16 Sept. | Mist | 25° /13° | 0 mm | 6 | |
| 17 Sept. | Light rain shower | 21° /14° | 1.5 mm | 5 | |
| 18 Sept. | Mist | 21° /9° | 0 mm | 5 | |
| 19 Sept. | Partly cloudy | 21° /10° | 0 mm | 5 | |
| 20 Sept. | Sunny | 22° /9° | 0 mm | 6 | |
| 21 Sept. | Mist | 23° /15° | 3.9 mm | 5 | |
| 22 Sept. | Mist | 23° /14° | 3.1 mm | 5 | |
| 23 Sept. | Fog | 20° /13° | 24.1 mm | 5 | |
| 24 Sept. | Partly cloudy | 20° /13° | 0 mm | 5 | |
| 25 Sept. | Overcast | 22° /13° | 13.7 mm | 5 | |
| 26 Sept. | Cloudy | 20° /12° | 0 mm | 5 | |
| 27 Sept. | Overcast | 18° /10° | 0 mm | 5 | |
| 28 Sept. | Overcast | 19° /11° | 0 mm | 4 | |
| 29 Sept. | Cloudy | 21° /14° | 0 mm | 5 | |
| 30 Sept. | Mist | 19° /12° | 0 mm | 5 | |
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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.
Barrie in September - FAQ
What are the expected maximum and minimum temperatures in Barrie during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 12°. 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 65.8 mm spread over approximately 8 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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