Click on a day for an hourly weather forecast
The temperatures in Jasper in August are quite cold with temperatures between 5°C and 18°C, warm clothes are a must.
You can expect rain for roughly half of the month of August in Jasper. 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 Jasper in August 2025.
If you’re planning to visit Jasper in the near future, we highly recommend that you review the 14 day weather forecast for Jasper before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -8° / -17° | 9 | 2 | 22 | 74 mm | Awful | Jasper in January |
| February | -8° / -19° | 9 | 1 | 22 | 61 mm | Awful | Jasper in February |
| March | -1° / -14° | 13 | 2 | 25 | 88 mm | Awful | Jasper in March |
| April | 4° / -9° | 13 | 2 | 19 | 101 mm | Awful | Jasper in April |
| May | 12° / -3° | 13 | 12 | 6 | 126 mm | Awful | Jasper in May |
| June | 15° / 2° | 14 | 16 | 0 | 172 mm | Ok | Jasper in June |
| July | 18° / 5° | 13 | 18 | 0 | 149 mm | Ok | Jasper in July |
| August | 18° / 5° | 9 | 22 | 0 | 100 mm | Ok | Jasper in August |
| September | 14° / 2° | 8 | 20 | 2 | 88 mm | Bad | Jasper in September |
| October | 4° / -5° | 10 | 8 | 13 | 96 mm | Awful | Jasper in October |
| November | -5° / -13° | 9 | 3 | 22 | 99 mm | Awful | Jasper in November |
| December | -10° / -18° | 8 | 3 | 22 | 58 mm | Awful | Jasper in December |