Apricots, Paraguayo peaches, plums and kakis have been the fruits most affected by hailstorms, as reported by the Unió in a statement.
The entity has stressed that the extent of the damage varies per plot, but has considered this as "catastrophic" for a variety of apricot called Mirlo Blanco, whose harvest has been "almost fully" destroyed.
Plums have been hit particularly hard by winds in both regions and more than 80% of the production has fallen to the ground, with "very substantial" damage for producers.
The Unió has announced that it will request aid for those affected, as well as tax and social security exemptions.
The most affected municipalities have been Otos, Bèlgida, Montaverner and Pobla del Duc, while others like Quatretonda, Benicolet, Barxeta and Xàtiva have also suffered losses.