The temperatures in Puerto Montt in August are quite cold with temperatures between 5°C and 10°C, warm clothes are a must.
You can expect rain for roughly half of the month of August in Puerto Montt. 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 Puerto Montt in August 2025.
If you’re planning to visit Puerto Montt in the near future, we highly recommend that you review the 14 day weather forecast for Puerto Montt before you arrive.