The best time to go to Furnas is during the dry season, which runs from April to September, to fully enjoy the outdoor activities without the interruption of heavy rains.
This period offers sunny days and lower humidity, making it ideal for exploring the natural beauty of the region, particularly the Furnas Lake and its many waterfalls. You'll find it comfortable for boat tours, hiking, and visiting attractions like the Canyons de Furnas.
For couples looking for a romantic getaway, visiting during the shoulder months of April, May, or September can be particularly appealing. The weather is still excellent, but there are generally fewer crowds, allowing for a more intimate experience at popular spots like the Cascata da Capivara or the Mirante dos Canyons.
Families often find July to be a great time, coinciding with school holidays in many places. While it's a popular month, the consistent good weather ensures that children can enjoy swimming in the natural pools and participating in boat trips without weather-related disruptions.