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Cape Breton County (Sydney)
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Weather in Cape Breton County for September 2026

Your guide to Cape Breton County weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Cape Breton County is cooler than usual, with temperatures averaging 17.2 °C, this is 2 °C below the typical seasonal average.

  • The forecast for the upcoming days in Cape Breton County predicts a temperature of 15.3 °C, which is slightly above the historical average.

  • In general, the average temperature in Cape Breton County at the beginning of September is 20.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.7 °C by the end of September.

    • Rain 🌧️

  • The climate of Cape Breton County in September is notably wet, with an average of 13 rainy days, and a total of 106.2 mm of precipitation.

    • More

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

Average dry days
17
Dry days
Average rainy days
13
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/12°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Cape Breton County Weather September

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

Temperatures trend during September in Cape Breton County

See the weather trend as well as the moving average line

September weather in Cape Breton County day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Cloudy
Cloudy
 20° /11° 0.3 mm 4
2 Sept. Partly cloudy
Partly cloudy
 20° /10° 1.9 mm 4
3 Sept. Partly cloudy
Partly cloudy
 20° /11° 0.3 mm 4
4 Sept. Fog
Fog
 22° /12° 11.1 mm 4
5 Sept. Light drizzle
Light drizzle
 19° /13° 18.6 mm 4
6 Sept. Light rain shower
Light rain shower
 21° /14° 5.1 mm 4
7 Sept. Light rain shower
Light rain shower
 21° /16° 9.7 mm 4
8 Sept. Fog
Fog
 22° /15° 3.5 mm 5
9 Sept. Fog
Fog
 20° /12° 1.1 mm 4
10 Sept. Mist
Mist
 20° /11° 2.7 mm 4
11 Sept. Patchy rain possible
Patchy rain possible
 18° /12° 3.6 mm 3
12 Sept. Overcast
Overcast
 18° /11° 0 mm 4
13 Sept. Overcast
Overcast
 20° /12° 0 mm 4
14 Sept. Light rain
Light rain
 20° /13° 11.8 mm 4
15 Sept. Sunny
Sunny
 19° /11° 1.9 mm 5
16 Sept. Overcast
Overcast
 21° /11° 2.9 mm 5
17 Sept. Overcast
Overcast
 22° /12° 0.8 mm 4
18 Sept. Mist
Mist
 21° /13° 1.4 mm 4
19 Sept. Heavy rain
Heavy rain
 18° /11° 10.9 mm 4
20 Sept. Overcast
Overcast
 16° /10° 0.1 mm 4
21 Sept. Light drizzle
Light drizzle
 15° /9° 0.3 mm 3
22 Sept. Overcast
Overcast
 16° /8° 0.1 mm 4
23 Sept. Overcast
Overcast
 16° /9° 0 mm 4
24 Sept. Overcast
Overcast
 18° /9° 0 mm 4
25 Sept. Overcast
Overcast
 17° /8° 0.1 mm 3
26 Sept. Overcast
Overcast
 17° /10° 13.2 mm 3
27 Sept. Overcast
Overcast
 16° /11° 0 mm 3.1
28 Sept. Overcast
Overcast
 14° /10° 0.8 mm 4
29 Sept. Patchy rain possible
Patchy rain possible
 13° /11° 4.7 mm 0.5
30 Sept. Patchy rain possible
Patchy rain possible
 15° /12° 0.4 mm 1.4
Next
Important Notice
Our weather forecast for Cape Breton County 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 Cape Breton County forecast closer to your planned date for the most up-to-date weather information.
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Cape Breton County in September - FAQ

What are the expected maximum and minimum temperatures in Cape Breton County during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Cape Breton County during September?
Significant rainfall exceeding 106.2 mm is expected in Cape Breton County during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Cape Breton County during September?
The average wind speed in Cape Breton County during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Cape Breton County

Explore the daily rainfall trends and prepare for Cape Breton Countys September weather 💧
Typically, Cape Breton County has 13 rainy days in September with a total of 106.2 mm of rainfall.

UV exposure in Cape Breton County during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Cape Breton County?

Get accurate weather forecasts for Cape Breton County, located at latitude 46.135 and longitude -60.183. Stay updated with localized weather information tailored for Cape Breton County.

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