If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Puerto Aysen: The hottest months are usually February and January, with an average temperature of 10°C, while the coldest months are July and August, with an average of 2°C. The rainiest months in Puerto Aysen are August, June, May and July, with each month seeing an average of 520 mm of rainfall.