Kato Vermio (Greek: Κάτω Βέρμιο, before 1926: Κάτω Σέλι - Kato Seli,[2] Aromanian: Selia de Jos[3] or just Selia[4]) is, primarily, an Aromanian (Vlach) Greek village and a community of the Veria municipality.

Summers consist of mild to warm days with cool nights.

The climate of Seli is somewhat moderated by the Mediterranean Sea, making extreme minimum and maximum temperatures rare.Seli is a winter sports resort located in the Vermion Mountains of northern Greece.

There are many restored and newly built vacation homes, mountain cottages and chalets in the village, and the climate consists of cool summers and snowy winters.

The village has many inns & hotels and a few cafe-bars and restaurants or tavernas.