The best time to visit Mariano Roque Alonso is during the cooler, drier months from April to September.During this period, the weather is more comfortable for exploring. Temperatures are generally milder, and there's less humidity and rainfall compared to the summer months. This makes it ideal for enjoying outdoor activities or simply getting around the city without the intensity of the summer heat.For travellers looking to experience local culture and events, the annual Expo Mariano Roque Alonso, a major agricultural and industrial fair, usually takes place in July. Planning your visit around this time can offer a unique insight into Paraguayan traditions and commerce, though it's wise to book accommodation in advance due to increased demand.If you prefer a quieter experience, May, June, or August are excellent choices.