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Weather in New Westminster for September 2025

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

    Temperatures

  • In general, the average temperature in New Westminster at the beginning of September is 22.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.4 °C by the end of September.

    • Rain 🌧️

  • New Westminster experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 97 mm.

    • More

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Average dry days
21
Dry days
Average rainy days
9
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/11°
Temperatures
Average wind speed
10 km/h
Avg max wind
Average humidity
79 %
Avg humidity

New Westminster Weather September

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

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. Partly cloudy
Partly cloudy
 25° /13° 0 mm 7
2 Sept. Sunny
Sunny
 25° /13° 0 mm 7
3 Sept. Light rain shower
Light rain shower
 19° /13° 0.8 mm 4
4 Sept. Overcast
Overcast
 20° /12° 0 mm 5
5 Sept. Overcast
Overcast
 22° /13° 0 mm 6
6 Sept. Partly cloudy
Partly cloudy
 22° /12° 0 mm 6
7 Sept. Cloudy
Cloudy
 23° /13° 0 mm 6
8 Sept. Mist
Mist
 21° /12° 0 mm 6
9 Sept. Mist
Mist
 20° /12° 0.1 mm 5
10 Sept. Overcast
Overcast
 20° /12° 0 mm 5
11 Sept. Patchy rain possible
Patchy rain possible
 18° /11° 0.5 mm 5
12 Sept. Mist
Mist
 17° /10° 0 mm 4
13 Sept. Mist
Mist
 17° /12° 0.8 mm 4
14 Sept. Mist
Mist
 20° /10° 2.6 mm 5
15 Sept. Partly cloudy
Partly cloudy
 20° /10° 0.1 mm 5
16 Sept. Overcast
Overcast
 19° /9° 0 mm 5
17 Sept. Overcast
Overcast
 16° /10° 0 mm 4
18 Sept. Patchy rain possible
Patchy rain possible
 16° /11° 0.6 mm 4
19 Sept. Overcast
Overcast
 13° /10° 1.6 mm 3
20 Sept. Patchy rain possible
Patchy rain possible
 18° /9° 0.2 mm 4
21 Sept. Overcast
Overcast
 19° /8° 0 mm 5
22 Sept. Sunny
Sunny
 19° /9° 8.1 mm 5
23 Sept. Light rain shower
Light rain shower
 17° /11° 4.1 mm 4
24 Sept. Light drizzle
Light drizzle
 20° /11° 4.6 mm 5
25 Sept. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 17° /12° 34.4 mm 4
26 Sept. Light rain shower
Light rain shower
 13° /10° 24.3 mm 3
27 Sept. Patchy rain possible
Patchy rain possible
 15° /10° 6.2 mm 4
28 Sept. Light rain shower
Light rain shower
 13° /8° 8.1 mm 3
29 Sept. Mist
Mist
 14° /6° 0 mm 4
30 Sept. Mist
Mist
 16° /5° 0 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 18° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in New Westminster during September?
Moderate rainfall is anticipated in New Westminster during September, with a total of 97 mm spread over approximately 9 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in New Westminster during September?
The average wind speed in New Westminster during September is 10 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 💧

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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