Riddes is situated on an alluvial cone of the river La Fare, which flows into the Rhone in the north. The commune area stretches south of the Rhone valley plain far along the steep mountain slope. The village is known for its large orchards and extensive vineyards. Mont Gelé, located in the commune, is the highest point within Riddes at 3023 meters above sea level. In the high mountains there, the mountain lake Lac de Vaux and two other lakes are popular hiking destinations. In winter, the hiking area is transformed into a ski resort with ski schools and freeride trails.