Click on a day for an hourly weather forecast
The temperatures in Nanaimo in August are usually low and can range between 13°C and 20°C.
You can expect about 3 to 8 days of rain in Nanaimo during the month of August. 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 Nanaimo in August 2025.
If you’re planning to visit Nanaimo in the near future, we highly recommend that you review the 14 day weather forecast for Nanaimo before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / 1° | 14 | 14 | 3 | 376 mm | Awful | Nanaimo in January |
| February | 5° / 1° | 11 | 13 | 5 | 250 mm | Awful | Nanaimo in February |
| March | 6° / 2° | 15 | 14 | 3 | 289 mm | Awful | Nanaimo in March |
| April | 9° / 4° | 11 | 18 | 1 | 186 mm | Bad | Nanaimo in April |
| May | 13° / 8° | 7 | 24 | 0 | 125 mm | Bad | Nanaimo in May |
| June | 16° / 10° | 6 | 24 | 0 | 104 mm | Good | Nanaimo in June |
| July | 19° / 13° | 4 | 27 | 0 | 52 mm | Good | Nanaimo in July |
| August | 20° / 13° | 3 | 28 | 0 | 72 mm | Good | Nanaimo in August |
| September | 17° / 11° | 8 | 22 | 0 | 174 mm | Ok | Nanaimo in September |
| October | 12° / 7° | 11 | 20 | 0 | 281 mm | Bad | Nanaimo in October |
| November | 7° / 4° | 15 | 14 | 1 | 402 mm | Bad | Nanaimo in November |
| December | 4° / 1° | 14 | 13 | 4 | 330 mm | Awful | Nanaimo in December |