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 experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 62.2 mm.
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Temperatures
Rain 🌧️
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21
Dry days
9
Rainy days
0
Snow days
17°/11°
Temperatures
9 km/h
Avg max wind
77 %
Avg humidity
Nanaimo Weather September
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Temperatures trend during September in Nanaimo
See the weather trend as well as the moving average line
September weather in Nanaimo 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.
Change Month
Nanaimo in September - FAQ
What are the expected maximum and minimum temperatures in Nanaimo during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 11°. 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 62.2 mm spread over approximately 9 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 💧
UV exposure in Nanaimo during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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