The temperatures in Martigny in August are quite cold with temperatures between 6°C and 18°C, warm clothes are a must.
There’s going to be many days of rain during the month of August in Martigny.
Martigny 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 Martigny in August 2026.
If you’re planning to visit Martigny in the near future, we highly recommend that you review the 14 day weather forecast for Martigny before you arrive.
Temperatures
18° / 6°
Rainy Days
15
Snowy Days
0
Dry Days
16
Rainfall
308
mm
Sun Hours
11.0
Hrs
