Click on a day for an hourly weather forecast
The temperatures in Sudbury in August are comfortable with low of 13°C and and high up to 23°C.
You can expect about 3 to 8 days of rain in Sudbury 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 Sudbury in August 2025.
If you’re planning to visit Sudbury in the near future, we highly recommend that you review the 14 day weather forecast for Sudbury before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -9° / -16° | 3 | 4 | 24 | 62 mm | Awful | Sudbury in January |
| February | -7° / -16° | 2 | 3 | 23 | 62 mm | Awful | Sudbury in February |
| March | -1° / -9° | 6 | 7 | 20 | 69 mm | Awful | Sudbury in March |
| April | 6° / -2° | 7 | 11 | 12 | 106 mm | Awful | Sudbury in April |
| May | 17° / 6° | 6 | 23 | 2 | 74 mm | Ok | Sudbury in May |
| June | 21° / 10° | 6 | 24 | 0 | 84 mm | Good | Sudbury in June |
| July | 24° / 13° | 5 | 26 | 0 | 79 mm | Perfect | Sudbury in July |
| August | 23° / 13° | 5 | 26 | 0 | 88 mm | Perfect | Sudbury in August |
| September | 18° / 9° | 6 | 24 | 0 | 92 mm | Good | Sudbury in September |
| October | 10° / 3° | 8 | 18 | 5 | 127 mm | Awful | Sudbury in October |
| November | 3° / -3° | 6 | 9 | 15 | 91 mm | Awful | Sudbury in November |
| December | -4° / -10° | 4 | 5 | 22 | 62 mm | Awful | Sudbury in December |