Click on a day for an hourly weather forecast
The temperatures in Banff in August are quite cold with temperatures between 8°C and 15°C, warm clothes are a must.
You can expect rain for roughly half of the month of August in Banff. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Banff in August 2025.
If you’re planning to visit Banff in the near future, we highly recommend that you review the 14 day weather forecast for Banff before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -8° / -16° | 11 | 2 | 21 | 44 mm | Awful | Banff in January |
| February | -8° / -17° | 10 | 1 | 22 | 49 mm | Awful | Banff in February |
| March | -3° / -11° | 12 | 1 | 25 | 80 mm | Awful | Banff in March |
| April | 1° / -6° | 11 | 2 | 21 | 127 mm | Awful | Banff in April |
| May | 7° / 0° | 15 | 8 | 9 | 180 mm | Awful | Banff in May |
| June | 12° / 5° | 16 | 13 | 1 | 232 mm | Bad | Banff in June |
| July | 16° / 8° | 13 | 18 | 0 | 162 mm | Ok | Banff in July |
| August | 15° / 8° | 9 | 22 | 0 | 118 mm | Ok | Banff in August |
| September | 10° / 2° | 7 | 20 | 2 | 83 mm | Awful | Banff in September |
| October | 1° / -6° | 9 | 8 | 14 | 75 mm | Awful | Banff in October |
| November | -5° / -13° | 11 | 2 | 21 | 73 mm | Awful | Banff in November |
| December | -10° / -18° | 10 | 3 | 22 | 51 mm | Awful | Banff in December |