Nanaimo
September
Weather in Nanaimo for September 2025
Your guide to Nanaimo weather in September - trends and predictions
In general, the average temperature in Nanaimo at the beginning of September is 21.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.4 °C by the end of September.
Nanaimo sees moderate rainfall in September, averaging 10 rainy days.
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20
Dry days
10
Rainy days
0
Snow days
18°/10°
Temperatures
10 km/h
Avg max wind
76 %
Avg humidity
Nanaimo in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | 2 23° | 3  16° | 4  20° | 5 21° | 6 21° | 7 22° |
| 8 19° | 9 18° | 10  19° | 11 17° | 12  16° | 13 16° | 14 19° |
| 15 20° | 16  19° | 17 18° | 18  17° | 19 14° | 20 16° | 21 18° |
| 22 19° | 23 17° | 24 15° | 25 16° | 26 14° | 27 15° | 28 14° |
| 29 14° | 30 13° |
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Temperatures trend during September in Nanaimo
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 | 25° /15° | 0 mm | 7 | |
| 2 Sept. | Sunny | 23° /15° | 0 mm | 6 | |
| 3 Sept. | Patchy rain possible | 16° /12° | 0.2 mm | 4 | |
| 4 Sept. | Mist | 20° /11° | 0 mm | 5 | |
| 5 Sept. | Mist | 21° /14° | 0 mm | 6 | |
| 6 Sept. | Mist | 21° /13° | 0 mm | 5 | |
| 7 Sept. | Mist | 22° /14° | 0 mm | 6 | |
| 8 Sept. | Mist | 19° /13° | 0 mm | 5 | |
| 9 Sept. | Mist | 18° /12° | 0 mm | 4 | |
| 10 Sept. | Cloudy | 19° /13° | 0 mm | 5 | |
| 11 Sept. | Mist | 17° /11° | 0.9 mm | 4 | |
| 12 Sept. | Light rain | 16° /11° | 1.3 mm | 4 | |
| 13 Sept. | Fog | 16° /11° | 0.2 mm | 4 | |
| 14 Sept. | Mist | 19° /10° | 2.1 mm | 5 | |
| 15 Sept. | Sunny | 20° /12° | 0 mm | 5 | |
| 16 Sept. | Overcast | 19° /11° | 0 mm | 5 | |
| 17 Sept. | Cloudy | 18° /12° | 5.1 mm | 4 | |
| 18 Sept. | Partly cloudy | 17° /10° | 0 mm | 5 | |
| 19 Sept. | Overcast | 14° /11° | 0 mm | 4 | |
| 20 Sept. | Partly cloudy | 16° /9° | 1.4 mm | 5 | |
| 21 Sept. | Cloudy | 18° /10° | 0 mm | 5 | |
| 22 Sept. | Sunny | 19° /11° | 0 mm | 5 | |
| 23 Sept. | Light drizzle | 17° /12° | 0.6 mm | 4 | |
| 24 Sept. | Light rain | 15° /11° | 13 mm | 4 | |
| 25 Sept. | Light rain shower | 16° /11° | 15.6 mm | 4 | |
| 26 Sept. | Light rain shower | 14° /10° | 8 mm | 3 | |
| 27 Sept. | Light rain | 15° /10° | 12.4 mm | 4 | |
| 28 Sept. | Patchy rain possible | 14° /8° | 1.5 mm | 3 | |
| 29 Sept. | Cloudy | 14° /7° | 0 mm | 4 | |
| 30 Sept. | Partly cloudy | 13° /8° | 0 mm | 4 | |
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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.
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 10°. 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 95 mm spread over approximately 10 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 10 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 💧
UV exposure in Nanaimo during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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