Gilly-sur-Isère (French pronunciation: [ʒili syʁ izɛʁ], literally Gilly on Isère; Arpitan: Zèlyé) is a commune in the Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France.

Gilly-sur-Isere is situated at the edge of Albertville to the bottom of the Combe de Savoie where you can access the valleys of Maurienne and Tarentaise and the valley of Arly and Beaufortain.

The average annual rainfall is 1,353.7 mm (53.30 in) with December as the wettest month.

The temperatures are highest on average in July, at around 20.7 °C (69.3 °F), and lowest in January, at around 1.7 °C (35.1 °F).

This Savoie geographical article is a stub.