Click on a day for an hourly weather forecast
The weather in Aosta Valley in August is very cold with temperatures between 2°C and 17°C, warm clothes are a must.
There’s going to be many days of rain during the month of August in Aosta Valley.
Aosta Valley should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
Our weather forecast can give you a great sense of what weather to expect in Aosta Valley in August 2025.
If you’re planning to visit Aosta Valley in the near future, we highly recommend that you review the 14 day weather forecast for Aosta Valley before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -4° / -16° | 2 | 8 | 21 | 116 mm | Awful | Aosta Valley in January |
| February | -3° / -16° | 3 | 5 | 21 | 114 mm | Awful | Aosta Valley in February |
| March | 0° / -13° | 6 | 4 | 23 | 127 mm | Awful | Aosta Valley in March |
| April | 4° / -8° | 9 | 3 | 20 | 185 mm | Awful | Aosta Valley in April |
| May | 8° / -4° | 18 | 4 | 12 | 272 mm | Awful | Aosta Valley in May |
| June | 14° / 0° | 19 | 10 | 2 | 249 mm | Bad | Aosta Valley in June |
| July | 17° / 2° | 16 | 14 | 1 | 219 mm | Ok | Aosta Valley in July |
| August | 17° / 2° | 15 | 16 | 0 | 201 mm | Ok | Aosta Valley in August |
| September | 13° / 0° | 12 | 16 | 3 | 129 mm | Awful | Aosta Valley in September |
| October | 8° / -5° | 7 | 17 | 8 | 126 mm | Awful | Aosta Valley in October |
| November | 2° / -10° | 4 | 9 | 17 | 183 mm | Awful | Aosta Valley in November |
| December | -3° / -15° | 1 | 11 | 18 | 101 mm | Awful | Aosta Valley in December |