The best time to visit Aco is during the dry season, which runs from May to September.During these months, you'll experience clear skies and warm, sunny days, making it ideal for exploring the region's stunning landscapes and archaeological sites. Temperatures are generally pleasant, ranging from 15°C to 25°C, great for outdoor activities like hiking and visiting the nearby ruins.For those planning to trek to the higher altitudes or visit the mountain ranges surrounding Aco, the dry season is particularly crucial. The trails are well-maintained, and the risk of rain or fog is lower, ensuring a more comfortable and enjoyable experience. This period is especially good for active travellers and those seeking adventure.While the shoulder months of April and October can also be good, with fewer crowds and pleasant weather, there's a higher chance of occasional rain showers.