Click on a day for an hourly weather forecast
The temperatures in Courtenay in September are usually low and can range between 12°C and 18°C.
You can expect about 3 to 8 days of rain in Courtenay during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Courtenay in September 2025.
If you’re planning to visit Courtenay in the near future, we highly recommend that you review the 14 day weather forecast for Courtenay before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / 2° | 13 | 16 | 2 | 96 mm | Awful | Courtenay in January |
| February | 5° / 1° | 10 | 16 | 2 | 54 mm | Awful | Courtenay in February |
| March | 7° / 2° | 10 | 20 | 1 | 62 mm | Bad | Courtenay in March |
| April | 10° / 5° | 9 | 21 | 0 | 45 mm | Ok | Courtenay in April |
| May | 15° / 8° | 6 | 25 | 0 | 30 mm | Good | Courtenay in May |
| June | 18° / 11° | 5 | 25 | 0 | 25 mm | Good | Courtenay in June |
| July | 21° / 14° | 3 | 28 | 0 | 11 mm | Good | Courtenay in July |
| August | 21° / 15° | 3 | 28 | 0 | 18 mm | Good | Courtenay in August |
| September | 18° / 12° | 7 | 23 | 0 | 55 mm | Ok | Courtenay in September |
| October | 12° / 8° | 12 | 19 | 0 | 81 mm | Bad | Courtenay in October |
| November | 7° / 4° | 14 | 15 | 0 | 114 mm | Bad | Courtenay in November |
| December | 4° / 1° | 12 | 17 | 2 | 87 mm | Awful | Courtenay in December |