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Weather in Nanaimo for September 2026

Your guide to Nanaimo weather in September - trends and predictions

    Temperatures

  • So far, September 2026 in Nanaimo is slightly warmer than the historical average by 1.3 °C.

  • Expect cooler weather in the next days in Nanaimo with the forecast suggesting a temperature of 19.1 °C, lower than the historical average.

  • In general, the average temperature in Nanaimo at the beginning of September is 22.1 °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 Nanaimo in September is notably wet, with an average of 13 rainy days, and a total of 71.7 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
18°/12°
Temperatures
Average wind speed
9 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Nanaimo Weather September

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

Temperatures trend during September in Nanaimo

See the weather trend as well as the moving average line

September weather in Nanaimo day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 23° /14° 0 mm 6
2 Sept. Sunny
Sunny
 23° /14° 2.4 mm 5
3 Sept. Patchy rain possible
Patchy rain possible
 20° /13° 2.8 mm 4
4 Sept. Sunny
Sunny
 22° /13° 0 mm 5
5 Sept. Sunny
Sunny
 23° /15° 0 mm 6
6 Sept. Sunny
Sunny
 23° /14° 0 mm 5
7 Sept. Mist
Mist
 21° /13° 6 mm 5
8 Sept. Sunny
Sunny
 20° /12° 8.8 mm 5
9 Sept. Mist
Mist
 19° /12° 0 mm 4
10 Sept. Cloudy
Cloudy
 21° /12° 0 mm 5
11 Sept. Mist
Mist
 18° /11° 0.6 mm 3
12 Sept. Overcast
Overcast
 21° /13° 0 mm 3.9
13 Sept. Sunny
Sunny
 18° /11° 0 mm 4.9
14 Sept. Overcast
Overcast
 16° /10° 0 mm 4.2
15 Sept. Sunny
Sunny
 19° /11° 0.1 mm 5
16 Sept. Sunny
Sunny
 18° /11° 0 mm 5
17 Sept. Sunny
Sunny
 20° /12° 0 mm 5
18 Sept. Sunny
Sunny
 21° /13° 0 mm 6
19 Sept. Sunny
Sunny
 21° /14° 0 mm 6
20 Sept. Sunny
Sunny
 18° /12° 0 mm 5
21 Sept. Partly cloudy
Partly cloudy
 18° /12° 0 mm 5
22 Sept. Sunny
Sunny
 19° /13° 0 mm 5
23 Sept. Sunny
Sunny
 22° /14° 0 mm 6
24 Sept. Sunny
Sunny
 18° /12° 0 mm 5
25 Sept. Sunny
Sunny
 19° /10° 0 mm 5
26 Sept. Light rain shower
Light rain shower
 14° /10° 5.3 mm 3
27 Sept. Light rain
Light rain
 15° /11° 8.3 mm 4
28 Sept. Overcast
Overcast
 15° /9° 1 mm 3
29 Sept. Cloudy
Cloudy
 15° /8° 1.8 mm 4
30 Sept. Partly cloudy
Partly cloudy
 14° /8° 5.4 mm 4
Next
Important Notice
Our weather forecast for Nanaimo 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 Nanaimo forecast closer to your planned date for the most up-to-date weather information.
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Nanaimo in September - FAQ

What are the expected maximum and minimum temperatures in Nanaimo during September?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Nanaimo during September?
Moderate rainfall is anticipated in Nanaimo during September, with a total of 71.7 mm spread over approximately 13 days. Considering plans for rainy days is advisable.

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

September rainfall patterns in Nanaimo

Explore the daily rainfall trends and prepare for Nanaimos September weather 💧
Typically, Nanaimo has 13 rainy days in September with a total of 71.7 mm of rainfall.

UV exposure in Nanaimo during September

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

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Get accurate weather forecasts for Nanaimo, located at latitude 49.166 and longitude -123.94. Stay updated with localized weather information tailored for Nanaimo.

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