A new and distinct variety of clingstone nectarine tree denominated ‘Andes Nec-3’ which has fruit that is similar to ‘Flavortop’ nectarine that are yellow in flesh color, firm in texture, and balanced acid/sweet flavor. The variety is distinguished from the ‘Flavortop’ by having a more extended red blush, better taste, and longer postharvest life potential, and by producing fruit that is clingstone instead of freestone. The varietys harvest period is 10-12 days before the ‘August Red’ variety. Its fruit is solid red to purplish red blush, with a round, symmetrical fruit shape.
