Seneca has a healthy, invigorating climate well suited for activites as well as comfortable retirement living. The area offers four distinct but mild seasons.

The climate in the Seneca area is temperate with a mean annual temperature of 60°F while the average July temperature is 78°F. The average relative humidity daily is 78% at 1:00 AM; 82% at 7:00 AM; 54% at 1:00 PM; 64% at 7:00 PM.

The mean annual percipitation in the Seneca area is 47.54 inches and the average growing season is 208 days. The elevation of Seneca is 950 feet above sea level.

Seneca, the largest city in Oconee County, is located in the northwestern corner of South Carolina, "The Golden Corner of South Carolina." Seneca is bounded by 18,500-acre Lake Keowee to the north, and to the west and south is Lake Hartwell.