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Weather in Moncton for September 2025

Your guide to Moncton weather in September - trends and predictions
  • In general, the average temperature in Moncton at the beginning of September is 22.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.9 °C by the end of September.

  • The climate of Moncton in September is notably wet, with an average of 11 rainy days.

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Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/11°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
82 %
Avg humidity

Moncton in September average weather

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Temperatures trend during September in Moncton

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. Sunny
Sunny
20° /11° 4.5 mm 5
2 Sept. Partly cloudy
Partly cloudy
23° /11° 0.4 mm 6
3 Sept. Partly cloudy
Partly cloudy
21° /10° 0 mm 6
4 Sept. Fog
Fog
25° /11° 0 mm 6
5 Sept. Mist
Mist
24° /13° 0 mm 6
6 Sept. Overcast
Overcast
22° /13° 0.5 mm 5
7 Sept. Fog
Fog
20° /14° 6.7 mm 5
8 Sept. Mist
Mist
24° /13° 1.1 mm 6
9 Sept. Light rain shower
Light rain shower
21° /13° 1.8 mm 5
10 Sept. Light rain shower
Light rain shower
20° /10° 2.3 mm 5
11 Sept. Light rain shower
Light rain shower
19° /10° 16.4 mm 5
12 Sept. Fog
Fog
21° /11° 0 mm 5
13 Sept. Fog
Fog
23° /14° 1.1 mm 5
14 Sept. Fog
Fog
20° /13° 1.5 mm 5
15 Sept. Mist
Mist
21° /8° 0 mm 5
16 Sept. Light rain shower
Light rain shower
24° /13° 26.1 mm 6
17 Sept. Light rain shower
Light rain shower
25° /14° 3.3 mm 6
18 Sept. Patchy rain possible
Patchy rain possible
24° /14° 0.6 mm 6
19 Sept. Light rain
Light rain
19° /14° 0.9 mm 4
20 Sept. Patchy rain possible
Patchy rain possible
18° /12° 0.4 mm 4
21 Sept. Patchy rain possible
Patchy rain possible
15° /9° 0.1 mm 4
22 Sept. Partly cloudy
Partly cloudy
17° /7° 0 mm 5
23 Sept. Overcast
Overcast
16° /9° 0 mm 4
24 Sept. Cloudy
Cloudy
18° /9° 0 mm 5
25 Sept. Light rain shower
Light rain shower
15° /9° 0.3 mm 4
26 Sept. Sunny
Sunny
18° /7° 2.2 mm 5
27 Sept. Mist
Mist
17° /9° 37.6 mm 4
28 Sept. Mist
Mist
18° /11° 2.7 mm 4
29 Sept. Mist
Mist
20° /7° 0 mm 5
30 Sept. Mist
Mist
19° /10° 0 mm 5
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Important Notice
Our weather forecast for Moncton 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 Moncton forecast closer to your planned date for the most up-to-date weather information.

Moncton in September - FAQ

What are the expected maximum and minimum temperatures in Moncton during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Moncton during September?
Significant rainfall exceeding 108.5 mm is expected in Moncton during September, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Moncton during September?
The average wind speed in Moncton during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Moncton

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

UV exposure in Moncton during September

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

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Location coordinates Where is Moncton?

Get accurate weather forecasts for Moncton, located at latitude 46.095 and longitude -64.797. Stay updated with localized weather information tailored for Moncton.

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