The best time to visit Puerto Chacabuco is during the Southern Hemisphere's summer months, from December to March.
During these months, the weather is at its most pleasant, offering milder temperatures and longer daylight hours. This period is ideal for exploring the natural beauty of the Aysén region, including its fjords, national parks, and glaciers. It's the peak season for outdoor activities like hiking, kayaking, and boat excursions to Laguna San Rafael National Park.
Travelers seeking a balance between good weather and fewer crowds might consider the shoulder seasons of November or April. While the weather can be a bit more unpredictable, you'll still find many attractions open, and the natural landscapes are just as stunning.