April is a wonderful time to visit Umbria..and if here then, do not miss the Good Friday "Processione del Cristo Morto" ("Dead Christ Procession") in Assisi and Easter Monday festival in Montone, centered on the Sacra Spina (or "Holy Thorn" - said to have been brought back from the Holy Land by Crusaders). Try to be in Gubbio on April 25th joining with the "locals" to celebrate the Liberazione in 1945. At April sagra events, villagers all over Umbria invite you to enjoy the best in home-cooking and join in ballroom dancing.
May offers even more sagras in local villages as well as the stupendous Calendimaggio festival in Assisi May 6 7 8 (this yr), May 15th Corsa dei Ceri Gubbio festival, Crossbow Festival in Gubbio end of May. Main attendees of all these events? Not tourists but "the locals". Share in their euphoria!