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Weather in New Westminster for September 2026

Your guide to New Westminster weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in New Westminster is slightly cooler than the historical average by 1 °C.

  • The forecast for the next days in New Westminster predicts temperatures to be around 21 °C, close to the historical average.

  • In general, the average temperature in New Westminster at the beginning of September is 22.9 °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 New Westminster in September is notably wet, with an average of 14 rainy days, and a total of 154 mm of precipitation.

    • More

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

Average dry days
16
Dry days
Average rainy days
14
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/12°
Temperatures
Average wind speed
9 km/h
Avg max wind
Average humidity
80 %
Avg humidity

New Westminster Weather September

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

Temperatures trend during September in New Westminster

See the weather trend as well as the moving average line

September weather in New Westminster day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 23° /13° 0.2 mm 6
2 Sept. Sunny
Sunny
 24° /14° 1.8 mm 5
3 Sept. Light rain shower
Light rain shower
 21° /14° 1.1 mm 4
4 Sept. Overcast
Overcast
 22° /12° 0 mm 5
5 Sept. Sunny
Sunny
 25° /14° 0 mm 6
6 Sept. Sunny
Sunny
 24° /13° 0 mm 6
7 Sept. Cloudy
Cloudy
 21° /13° 5.1 mm 5
8 Sept. Mist
Mist
 21° /12° 0 mm 5
9 Sept. Mist
Mist
 20° /12° 0 mm 4
10 Sept. Patchy rain possible
Patchy rain possible
 20° /12° 0.1 mm 4
11 Sept. Patchy rain possible
Patchy rain possible
 17° /11° 0.2 mm 4
12 Sept. Overcast
Overcast
 24° /12° 0 mm 4.1
13 Sept. Patchy rain possible
Patchy rain possible
 17° /12° 0.4 mm 2
14 Sept. Patchy rain possible
Patchy rain possible
 18° /11° 0.9 mm 2.9
15 Sept. Sunny
Sunny
 19° /10° 0.1 mm 5
16 Sept. Smoky haze
Smoky haze
 22° /11° 0 mm 6
17 Sept. Sunny
Sunny
 24° /12° 0 mm 6
18 Sept. Sunny
Sunny
 25° /13° 0 mm 6
19 Sept. Overcast
Overcast
 24° /15° 0 mm 6
20 Sept. Sunny
Sunny
 21° /13° 0 mm 6
21 Sept. Cloudy
Cloudy
 20° /12° 0 mm 4
22 Sept. Sunny
Sunny
 22° /12° 0 mm 6
23 Sept. Sunny
Sunny
 23° /13° 0 mm 6
24 Sept. Sunny
Sunny
 16° /11° 0.1 mm 4
25 Sept. Sunny
Sunny
 20° /9° 0 mm 6
26 Sept. Light rain shower
Light rain shower
 13° /9° 18.2 mm 3
27 Sept. Patchy rain possible
Patchy rain possible
 15° /10° 14.3 mm 4
28 Sept. Overcast
Overcast
 15° /9° 5.4 mm 3
29 Sept. Mist
Mist
 14° /8° 39.5 mm 4
30 Sept. Mist
Mist
 17° /7° 10.7 mm 4
Next
Important Notice
Our weather forecast for New Westminster 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 New Westminster forecast closer to your planned date for the most up-to-date weather information.
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New Westminster in September - FAQ

What are the expected maximum and minimum temperatures in New Westminster 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 New Westminster during September?
Significant rainfall exceeding 154 mm is expected in New Westminster during September, occurring over more than 14 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in New Westminster during September?
The average wind speed in New Westminster during September is 9 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in New Westminster

Explore the daily rainfall trends and prepare for New Westminsters September weather 💧
Typically, New Westminster has 14 rainy days in September with a total of 154 mm of rainfall.

UV exposure in New Westminster during September

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

Quick links

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Location coordinates Where is New Westminster?

Get accurate weather forecasts for New Westminster, located at latitude 49.207 and longitude -122.911. Stay updated with localized weather information tailored for New Westminster.

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